Rocket Propulsion Elements, 7th Edition

Book Description

Aerospace Engineering/Mechanical Engineering
The definitive text on rocket propulsion-now completely revised to reflect rapid advancements in the field
For more than fifty years, this seminal text has been regarded as the single most authoritative sourcebook on rocket propulsion technology. More comprehensive and coherently organized than any other book on the subject, Rocket Propulsion Elements guides readers evenhandedly through the complex factors that shape propulsion, with both theory and practical design considerations.
With more than a third of the text and illustrations either completely new or extensively revised, this latest edition includes current information on engine structures, nozzle theory, gas properties, thrust chambers, launch vehicles, and more. With a detailed table of contents breaking down each chapter into subsections-as well as an expanded index of key words-the Seventh Edition efficiently steers readers quickly to the information they need. Other highlights include:
* Separate chapters on liquid, solid, and hybrid propulsion systems and a new chapter on thrust chambers including the new aerospike nozzle
* Comprehensive coverage of rocket propulsion technology, with applications to space flight, satellite flight, and guided and unguided missiles
* Problem-solving examples and exercises relevant to actual design situations
* More than 340 illustrations, including photographs, tables, and graphs
* Coherent, up-to-date chapter on electrical propulsion balancing fundamentals with practical aspects and applications
For professional engineers in the aerospace and defense industries as well as undergraduate and graduate students in mechanical and aerospace engineering, this time-honored resource is indispensable for its scope of coverage and utility.

Customer Reviews:

The Bible of the Field.......2007-03-24

When as a young physicist I started working on rocket nozzle design most of the material in this book had to be dug up from a paper here, a book there, or else it simply wasn't known. Now here's everything you need to know in a couple of chapters. And besides nozzle design, here in information on virtually every aspect of rockets from the design to the propellents, from concepts to testing. Most of the book is on conventional liquid or solid fuel chemical rockets, because that's where most of the action is today. There is a new chapter (from my older edition) on electrical propulsion.

The book is suitable for use as a textbook for either a one or two term course, or as an introductory book to an engineer now moving into the field, or as a reference book for the experienced. It is especially good to use when you need to come up to speed on some area of the business where you don't normally work.

The one weakness of the book is the lack of discussion on computers either in terms of engine control systems or of the design software that is avaiable. Next revision I guess.

If you love rocket propulsion you must get this book.......2007-01-19

I have loved rocket propulsion in all its forms (real and imagined) since I was following the Apollo 11 mission on television. This book will help you with every aspect of rocketry whether for direct professional relevance, hobbyist development or whether you dream with many of us of solving the problems that will allow us (as so eloquently put by the late Carl Sagan) to "dip our toes in the cosmic ocean". I believe we must swim between the stars and the nuts and bolts foundations for doing it are in this book. Go get it. Lets do it.

Rocket Scientists Use It Too.......2006-11-17

I started work with a rocket design group fresh out of a MS in mechanical engineering. One of the first things everybody told me was to pick up a copy of Sutton. It's a good thing I did, because I immediately started referring to it for just about every project I worked. After just a few months it became a dog eared, marked, and well used reference.

It's a few years later now, and I don't work with rockets full time any more. I've forgotten enough of the details that today when I was explaining a bit of rocketry to a coworker, out came Sutton again. It's still a great book.

Fantastic resource.......2006-02-20

This was a required test for a rocket propulsion class, but it has become an invaluable resource for many classes. Purchased for at least 20% less than other outlets.

A Must-Have Textbook for every Aerospace Engineer.......2004-03-27

This is the single best book on rocket propulsion systems, covering both liquid and solid rocket engines, hybrid rocket systems, and a dedicated chapter on electric propulsion. The authors include excellent illustrations and graphs to enhance the text, and practical examples which help the reader to grasp the theory. After loaning a copy of this book for over two years from my library, i finally bought it! Definitely recommended to all engineers and scientists who want to expand into the area of rocket propulsion.

The Trouble With Physics: The Rise of String Theory, the Fall of a Science, and What Comes Next

Average customer rating:

Scientific progress is never cut and dried
physics from many angles
A mixed bag
The Endless Quest Continues
Outstanding piece of writing, A must-read for any science enthusiast.

The Trouble With Physics: The Rise of String Theory, the Fall of a Science, and What Comes Next
Lee Smolin
Manufacturer: Houghton Mifflin
ProductGroup: Book
Binding: Hardcover

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ASIN: 0618551050

Book Description

In this groundbreaking book, the renowned theoretical physicist Lee Smolin argues that physics—the basis for all other science—has lost its way. The problem is string theory, an ambitious attempt to formulate "a theory of everything" that explains all the forces and particles of nature and how the universe came to be. With its exotic new particles and parallel universes, string theory has captured the public"s imagination and seduced many physicists. But as Smolin reveals, there"s a deep flaw in the theory: no part of it has been proven, and no one knows how to prove it. As a scientific theory, it has been a colossal failure. And because it has soaked up the lion's share of funding, attracted some of the best minds, and penalized young physicists for pursuing other avenues, it is dragging the rest of physics down with it. With clarity, passion, and authority, Smolin charts the rise and fall of string theory and takes a fascinating look at what will replace it. A group of young theorists has begun to develop exciting new ideas that are, unlike string theory, testable. Smolin tells us who and what to watch for in the coming years and how we can find the next Einstein. This is a wake-up call, and Lee Smolin—a former string theorist himself— is the perfect person to deliver it.

Customer Reviews:

Scientific progress is never cut and dried.......2007-10-08

Lee Smolin presents a harsh critique of the last 30 years in theoretical physics, written by one of its practitioners. He makes the excellent point that science is a human activity like anything else. Progress is always hard to predict; scientists can and do get caught up in dead ends. Smolin thinks string theory is one such dead end, and makes a good case for it.

I think that, if anything, Smolin is a little too gentle on the field. The development of the atomic and hydrogen bombs left a tremendous impression that big money put into physics would bring big results. In recent years that hasn't happened. There are so many unanswered questions out there in science, so many important fields where solutions are desperately needed. When I consider the construction and operation of particle accelerators and other high-tech equipment, I can't help but think of the huge cost. The same amount of cash invested elsewhere might have brought much more in the way of useful results.

I am the mother of a 10-year-old boy attending public school. His instruction sometimes seems to me like a mishmash of well-meaning educational reforms that have been implemented with little or no testing to see if they worked or not. I am frankly disgusted by the quality of most research in the area of education--sample sizes too small, no proper controls, subjects followed for too short a time, etc. The cost of operating a single particle accelerator for six weeks probably exceeds all the funding for educational research around the world for the entire year. Yet which has the most potential for making major progress? Maybe it's time to back off on funding big physics projects for a while.

I would also like to point out that the building and use of instrumentation for high-energy physics is highly dependent on cheap fossil fuels. The future supply of such fuels is by no means guaranteed. The peak oil problem appears to be largely ignored by high-energy physicists today, but has the potential to significantly affect their ability to conduct experiments.

I really enjoyed Smolin's chapters on looking for seers rather than technicians in science. I especially liked his description of how unconventional scientists have built a career without a university job. Smolin points out that a typical professor spends a majority of his week on teaching, grant proposals, administrative tasks, and the like, leaving a surprisingly small amount of time available for actual research. Having a day job outside the field is not as big a hurdle as it might seem.

I tend to agree with Smolin that the big advances of the future are likely to come from completely unexpected directions. I can't wait to see what they are.

physics from many angles.......2007-10-05

This book provided several discussions pf physics and quantum theory. its good because the author speaks of the history the the originators of physics theory and the current champions of thought.

A mixed bag.......2007-10-04

At the moment, string theory appears to have many (possibly an infinite number) of "metastable vacua", each of which would allow for a universe with its own laws of physics. (For a brief, comic, yet essentially correct summary of the history of this idea, see Peter Shor's review here. For those who don't know, Shor is a celebrated quantum-information theorist.) According to the (far from established) inflationary model of cosmology, there is a vast collection of universes (the "multiverse") with diverse laws of physics. Which universe we find ourselves in is a matter of random selection, but of course we must be in a "biofriendly" universe, one whose laws of physics allow for the appearance of intelligent life.

The core argument of this book is presented on page 164-165 (US hardcover edition), where Smolin writes, "when it comes to the biofriendliness of our universe, we have at least three possibilities:

"1. Ours is one of a vast collection of universes with random laws.

"2. There was an intelligent designer.

"3. There is a so-far-unknown mechanism that will both explain the biofriendliness of our universe and make testable predictions by which it can be confirmed or falsified.

"Given that the first two possibilities are untestable in principle, it is most rational to hold out for the third possibility. Indeed, that is the only possibility we should consider as scientists, because accepting either of the first two would mean the end of our field."

I find this to be an astonishing argument. First of all, I don't know what "most rational" is supposed to mean. More importantly, to reject a scientific hypothesis for purely personal reasons (it "would mean the end of our field") is at best novel, and at worst absurd.

Very few string theorists are happy that #1 seems, at this point, to be the most likely outcome of string theory, and many hope that #3 will somehow eventually emerge. But to throw out the whole framework, simply because we don't like the result, cannot be said to be a scientific attitude.

One thing you won't learn in this book (unless you read it very carefully, and between the lines) is that the other approaches to quantum gravity advocated by Smolin have not come any closer to predicting specific experimental results than string theory has. Smolin talks about possible violations of special relativity, but these are not (as he admits on page 237) a definite prediction of loop quantum gravity. He has said (on Peter Woit's blog) that any quantum field theory in any number of dimensions is compatible with loop quantum gravity. If true, this would make loop quantum gravity even less capable than string theory of picking out our particular laws of physics.

Smolin also discusses issues of sociology in physics. On page 335-336, he asserts that the all the truly negative characterizations of job candidates that he has ever heard have had a component of racism and/or sexism. I am on the faculty of the physics department of a research university, and I can only say that my experience has been entirely different. I have simply never heard a racist or sexist denigration of one scientist by another, nor have I ever felt that anyone was being evaluated by criteria other than merit. I think that there are definitely issues of culture and how we can construct scientific communities that have broader appeal, and that there are physicists who are not as sensitive to these issues as they might be, but I cannot accept Smolin's claim that the relatively small percentage of women and blacks in physics is due to "blatant prejudice".

Finally, Smolin discusses the issues of "seers" vs "craftspeople" in science, and argues that we should be supporting more "seers". Among the existing seers, he lists some (such as Roger Penrose and Gerard 't Hooft) who made their reputations primarily as craftspeople ('t Hooft received the Nobel Prize for his work on the renormalization of gauge theories, and Penrose did celebrated work on the singularity theorems of general relativity). Their record as seers has been less successful; none of their recent ideas on modifications of quantum mechanics have panned out as yet. Smolin laments the fact that more attention is not paid to these forays into alternatives to quantum mechanics. But 't Hooft and Penrose do not agree on what modifications are needed. Other seers identified by Smolin propose violations of special relativity, rather than (or in addition to) violations of quantum mechanics. Perhaps this is all deep thought, but there is little to decide, at this point, which if any of these avenues should be pursued. Most physicists have therefore sensibly adopted a "wait and see" attitude.

Even if we accept Smolin's argument that we need new seers, how are we to find them? Smolin writes (page 353) that in order to discover "the visionaries who ignore the mainstream and follow their own ambitious programs", we should "find at least one accomplished person in the candidate's field who is deeply excited about what the candidate is trying to do". So, the candidate's program had better not be *too* far off the mainstream; there has to be at least one "accomplished person" who is "deeply excited" about it. But if one deeply excited professional is good, wouldn't more be better? Wouldn't that up the odds that the program was, indeed, worthwhile? Oh wait, that would be just what we have now ... a system where there is constant debate, emergent consensus on the most promising approaches, and distribution of research funds primarily (but by no means exclusively!) to those approaches that appear, in the consensus view, to be most promising. To paraphrase Winston Churchill on democracy, this system for distributing funds for science may be the worst ever devised, except for all the others.

So, should you buy the book? I feel that it gives a distorted picture, by emphasizing the weak points of string theory while ignoring the (many more, in my view) weak points of the alternatives. It seems to me that the essence of the book's argument against string theory is captured by the excerpts above, and by Shor's review. Then there is a lot of discussion of groupthink in scientific culture. For me, it doesn't add up to an appealing package, but your mileage may vary.

The Endless Quest Continues .......2007-10-04

I like Lee Smolin and this is a good exposition of the current quandary in Physics. When the mathematicians "hijacked" physics in the 1920's, they created ever-so elegant formulas and abstraction upon abstraction upon abstraction. "Just give me a formula!" was their mantra, and what it all really "means" was not their concern. This is the essence of Bohr's position (no pun intended), and Einstein was not able to answer, even though he knew something was missing.

String theory has many intriguing ideas, and it's supporters should not be easily dismissed. Again and again, we come back to the basic question...particle or wave? Wavicle? Partiwave? String?

Outstanding piece of writing, A must-read for any science enthusiast........2007-09-22

I found this book to be superbly written and full of fascinating insights. I really loved reading it. Many of the longer reviews here do a great job of reviewing the content of the book, so I'll stick to offering my opinion.

I will no doubt read this book again in the future as much of the content was way over my head. However, as with any great book on any subject, this did not prevent me from thoroughly enjoying it and learning a lot. What makes it so great is that each time I read it I will learn more.

I want to thank Lee Smolin for putting the current state of his field in some perspective. I highly, highly recommend this book!

Fundamentals of Space Systems (The Johns Hopkins University/Applied Physics Laboratory Series in Science and Engineering)

Average customer rating:

Experts Define the State of the Art in Spacecraft Design

Fundamentals of Space Systems (The Johns Hopkins University/Applied Physics Laboratory Series in Science and Engineering)

Manufacturer: Oxford University Press, USA
ProductGroup: Book
Binding: Hardcover

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ASIN: 0195162056

Book Description

Fundamentals of Space Systems was developed to satisfy two objectives: the first is to provide a text suitable for use in an advanced undergraduate or beginning graduate course in both space systems engineering and space system design. The second is to be a primer and reference book for space professionals wishing to broaden their capabilities to develop, manage the development, or operate space systems. The authors of the individual chapters are practicing engineers that have had extensive experience in developing sophisticated experimental and operational spacecraft systems in addition to having experience teaching the subject material. The text presents the fundamentals of all the subsystems of a spacecraft missions and includes illustrative examples drawn from actual experience to enhance the learning experience. It included a chapter on each of the relevant major disciplines and subsystems including space systems engineering, space environment, astrodynamics, propulsion and flight mechanics, attitude determination and control, power systems, thermal control, configuration management and structures, communications, command and telemetry, data processing, embedded flight software, survuvability and reliability, integration and test, mission operations, and the initial conceptual design of a typical small spacecraft mission.

Customer Reviews:

Experts Define the State of the Art in Spacecraft Design.......2005-08-17

This book is on the design of spacecraft. In order to have the most up to date information available, each chapter is written by an expert in the particular field covered by that chapter. Looking at the brief introduction of the writers shows that most of them have been involved in the design of actual spacecraft for the John Hopkins Applied Physics Laboratory. These people have been actually working on the subjects they discuss.

This is the second edition of the book, published in 2005 to reflect the latest changes in the technology and science of spacecraft systems engineering that have occurred since the publication of the first edition.

Second an attempt has been made to make the material more suitable for a space systems course as a prerequisite to a senior class project to design and perhaps build and launch a spacecraft or spacecraft instrument.

The structure of the book is to break down the spacecraft into a number of sub-systems to a depth that should permit the reader to carry out a conceptual design.

This book describes the state of the art as it exists for spacecraft design.

The Ghost Brigades (Sci Fi Essential Books)

Average customer rating:

Are these reviewers all insane???
Quality Character-Based Sci Fi
Great book, as good or better then Old Man's War
Excellent addition to "Old Man's War"
Much stronger than the first book

The Ghost Brigades (Sci Fi Essential Books)
John Scalzi
Manufacturer: Tor Books
ProductGroup: Book
Binding: Hardcover

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ASIN: 0765315025
Release Date: 2006-02-21

Book Description

The Ghost Brigades are the Special Forces of the Colonial Defense Forces, elite troops created from the DNA of the dead and turned into the perfect soldiers for the CDFs toughest operations. Theyre young, theyre fast and strong, and theyre totally without normal human qualms. The universe is a dangerous place for humanityand its about to become far more dangerous. Three races that humans have clashed with before have allied to halt our expansion into space. Their linchpin: the turncoat military scientist Charles Boutin, who knows the CDFs biggest military secrets. To prevail, the CDF must find out why Boutin did what he did. Jared Dirac is the only human who can provide answersa superhuman hybrid, created from Boutins DNA, whose brain is uniquely able to access Boutins electronic memories. But when the memory transplant appears to fail, Jared is given over to the Ghost Brigades. At first Jared is a perfect soldier, but as memories surface, he begins to intuit the reasons for Boutins betrayal. As Jared desperately hunts for his father, he must also come to grips with his own choices. Time is running out: the alliance is preparing its offensive, and some of them plan worse things than humanitys mere military defeat . . . .

Customer Reviews:

Are these reviewers all insane???.......2007-10-08

Please read a few books by the following authors:

Iain M. Banks, Charles Stross, William Gibson, John C. Wright, Richard Morgan, Neal Asher, Ken MacLeod.

Or just read one book by one of the above authors. Now read Ghost Brigade.

Notice a difference?

Scalzi has to tell rather than show. His characterization is shallow. His technological ideas would have been novel ten years ago. The pacing drags.

Here's an example: At one point he writes that the soldier's guns are linked to their specific brain implants. He then writes that that's so "their guns can't be used against them by anyone else". Really?!! Thanks for making that clear, because I wouldn't have picked up on it otherwise. The writing follows this painful pattern throughout.

This would be a great book for a seventh or eigth grader wanting to read their "first" sci fi novel, but is it really "top notch"? If you want some great sci fi, skip this and read any of the authors listed above.

Quality Character-Based Sci Fi.......2007-10-06

The Ghost Brigades is a sequel to Scalzi's excellent debut novel, Old Man's War. Several centuries from now, humans are aggressively pushing outward into space, establishing colonies and holding them by force against any number of alien races. The Colonial Defense Force (CDF) is made up of human minds transplanted into new bodies genetically engineered for combat. The most elite branch of the CDF are the shadowy Ghost Brigades.

The story follows an atypical member of the Ghost Brigades, Jared Dirac. Jared's body is a clone designed to reintegrate the mind and memories of a traitor, Charles Boutin, who is helping an alliance of races plan a war against the CDF. The mind transferal doesn't work, so Jared enters the service as himself. However, a series of events begin to trigger memories, which eventually leads to a mission to extract Boutin and uncover his secrets.

What I like best about Scalzi are his characters. Every person in the book has a well-developed, unique, believable personality. Even better, their personalities are not static, but change and mature with events. This is true of every character, but especially so for Jared. As a newly created being, Jared struggles to understand the world and his place in it. In an interesting scene, Jared reads Shelly's Frankenstein to find parallels to his own situation. Is he truly human? Does he control his own destiny? You come to like and care about Jared, which is good, because the book is more about his journey than it is about military operations or galactic politics.

As much as I liked the book, I can't quite give it five stars. The overall plot and action sequences were not as satisfying as Old Man's War. Still, it is a top-notch piece sci fi tale. I give it 4½ stars.

Great book, as good or better then Old Man's War.......2007-09-11

Continues the enthrolling world that Scalzi created in Old Man's War. This book will be a fast read for most and just as interesting and entertaining as any book I've read. I only have experience with newer sci-fi books, but this one explores the idea of human existence and fate well. Can't wait to read the rest of the books by Scalzi.

The only annoying part is all the typos. The editor was obviously drunk when he checked for typos, but the storyline outweighs all the typos, even though this would usually turn me off of a book immediatley.

Excellent addition to "Old Man's War".......2007-08-30

After reading his first book, I couldn't wait until he wrote another. "Ghost Brigades" does not disappoint. I love his characters sense of humor which is often lacking in science fiction. Most writers have characters that take themselves too seriously, which means the writers themselves do as well. John Scalzi is a breath of fresh air in what can be a very tedious genre.

Much stronger than the first book.......2007-08-23

I liked Old Man's War well enough to read the second. Scalzi is very good at what he's good at, which is thoughtful setting, breezy and fun action, and smart characters. But for all the good in the first book, I felt it ultimately didn't have any complexity in the characters, and the Universe had some moral issues that were interesting and not really examined.

I'm happy to say that Scalzi has answered my concerns in this volume. The characters are much more complex. There are psychological motivations for the plot that go beyond "They think we're yummy." If you liked parts of Old Man's War, but wanted meatier characters, keep reading.

I can see why fans of the Military Action SF genre might not have liked it as much as the almost pure adventure of the first novel, but for the rest of the Science Fiction community, this is a solid step in the right direction for a very promising author.

History: Fiction or Science? (Chronology, No. 1)

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Calculations are only as good as your numbers
Pants on fire?
Accepted History & Chronology Must Be Changed.
Very Interesting
History as Science Fiction

History: Fiction or Science? (Chronology, No. 1)
Anatoly Fomenko
Manufacturer: Mithec
ProductGroup: Book
Binding: Paperback

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ASIN: 2913621058

Book Description

Recorded history is a finely-woven magic fabric of intricate lies about events predating the sixteenth century. There is not a single piece of evidence that can be reliably and independently traced back earlier than the eleventh century. This book details events that are substantiated by hard facts and logic, and validated by new astronomical research and statistical analysis of ancient sources.

Customer Reviews:

Calculations are only as good as your numbers.......2007-08-03

Yes, we can all agree that mainstream history is nearly 100% BS due to politics, economics, ego, problems with dating techniques, and various conspiracies. Agreed. But, I've been researching the distinct possibility that human history (in terms of civilizations) are much more ancient than we've been told, so coming across this book was very interesting to me. I wondered how Fomenko could be wrong (if at all) because he is very persuasive in his presentations. Then it dawned on me. If at previous times in prehistory, due to the various catastrophies that are well documented (comets, asteroids, planetary disruptions, plasma discharge, pole reversals, etc) the Earth was in a different position in relation to the sun, different tilt on its axis, different orbit, different rotation (in terms of velocity and DIRECTION), and the continents were in different positions, then would this not cause the ancients to see the sky (constellations) differently? In other words, is Fomenko making erronious assumptions about the physics of the Earth in pre-history, which then corrupt his data with regards to dating the relevant astrology? The last event to seriously disrupt our planet occured roughly 3500 years ago, according to other good researchers, so is it possible Fomenko has been confused by this? The vastly different physics of our planet in the not so distant past may explain this confusion, which is not to say the "mainstream" version of history is correct; on the contrary. I am not an expert in these fields, but wanted to see if this idea could spark discussion.

Pants on fire?.......2007-07-19

Will people ever read before spamming? Yes, Jesuits could not rewrite world history alone, they had help. Anyway, Dr Prof Acad A.Fomenko does not point to jesuits as the driving force of world wide history manipulation in published volumes 1,2,3;, actually he barely mentions the poor devils. Check it with 'Search inside' feature, please. China is rarely mentioned either, in fact, Dr Fomenko is completely eurocentric. Right, his theory contradicts all mainstream schools of history, because in their actual state they are all built on blatantly erroneus chronology. You don't need a mysterious cabal (conspiracy) to falsify history, the falsification is its modus operandi. It is inherent to history(ians) to falsify (distort) events, as it is inherent to humans to boast as it is inherent to power (authority) to legimize itself by referrring to glorious past made to its own order. Dr Prof Fomenko and team have identified scores of instances of such manipulation in Russian, European, etc.. history, and delivered valid statistical proof thereof. His own 'reconstruction' is completely another story. Forget c14 as a valid method of dating. W.Libby has initially discovered a brilliant method of INDEPENDENT dating. Too bad, c14 method has become a joke after a forced marrige with dendrochronology with consensual chronological scale inbuilt. Radiocarbon method can't stand blind tests, but is so very productive as a rubberstamp.

Accepted History & Chronology Must Be Changed. .......2007-04-09

There is no doubt that history as most know it is a sham, & institution's version of History both University & Church is fradulent & inaccurate. Everything was established with an agenda, The real "Dark Ages" are now when we have access to incredible amounts of information past authorities & more important 'common folk' didn't have but our institutions & educators are slow to evolve because of what has ignorantly & arrogantly been taught for too long. This is on many subjects not just Chronology.

For anyone to question "Why would a Mathematician have anything credible to say of History?" The answer is from Dr. Fomenko's preface in the book: "It would be worthwhile to remind the reader that in the XVI-XVII century Chronology was considered to be a subdivision of Mathematics." These volumes could possibly be some of the most important works to date & should be read by everyone with an interest in History, especially professors & educators who have a duty to the public. I have read both books & must say that 'Chronology 1' has some very eye opening & revolutionary information. Even if these volumes are part true the implications are profound & opens the doors to further investigations & questions which must be done. I speak several different lanquages & must say the logic Dr. Fomenko uses with "inflection" of words & words being read from left to right in one region & right to left in another then written backwards, the removal of vowels & get down to basics of words, or different cities & locations having the same name etc. is correct. Vowel usage has always been optional & varied, actually complicating linquistics & study. The first thing one has to understand is that words never had a fixed spelling in history like we do now, the spelling of words was mutable & regional, as well as names & titles of people were vast, varied & changed, NOTHING WAS FIXED or understood linear. Matters of Life & Death as well as financial profiteering yesterday & today were & are made with ignorant, illogical & conspiratorial views of history & reality, it's time people get closer to the Truth & society collectively grow up.

Very Interesting.......2007-03-07

It is a good proposal and I believe it will mature into something even better in the future. I think it deserves to be read.

History as Science Fiction.......2007-01-10

Anatoly Fomenko has written a very intriguing book, full of pictures, charts, and computer 'proof' of his thesis: backwards of AD900 we don't really know what happened or when. Between AD900 and AD1600 there is more certainty, but there is still a lot of fuzzy ground, and things don't get reliable until we get past the 1600's where the printing press made it very difficult for the perpetrators of this timeline manipulation to change anything that had been committed to print. The Dark Ages did not happen. Books were burned for a reason. One organization has doubled the actual length of its existence by expanding the real chronology. Read why.

I had always wondered why Christ died about AD33 and yet men waited until the 11th century to form the Knights Templar, the Cathars, etc and go after the Holy Land by force. Why the 1000 year gap? Turns out there wasn't more than a 10-12 year gap and he proves it using astronomy. This also implies that the planet is not as old as we have been told, and current Christian and other creationist scientists are already championing that idea without being aware of Fomenko's book. The two groups, creationist scientists and the Russian mathematical analysts corroborate each other. Fascinating.

Of course, all this flies in the face of what we have been told traditionally is the 'proper' chronology of western civilization, and most readers will experience 'cognitive dissonance' in reading this book. It means that our history going backwards from AD1600 becomes progressively more incorrect and unreliable until it cannot be trusted at all... in the space of 700-800 years.

Naturally, the curious, open-minded reader will want to know WHO did this, WHY, and did any of the events we think of as really ancient ever happen?
Dr. Fomenko is a respected scientist/mathematician at Moscow State University who has already answered these questions to the satisfaction of his initially skeptical colleagues. Most of them are now believers, a few still refuse to believe (the usual diehards), and of course the western press has ignored Fomenko's work -- for obvious reasons when you read the book. The ones who perpetrated this chronology ruse have a lot to answer for. They are still with us. That's why this book is a well-kept secret.

I gave the book a 4-star rating because I was unable to check out some of his claims; those I checked were as he said. But if even 1/3 of his claims are true, this punches a big hole in what we think is our history, the meaning of western civilization, our educational process (for repeating the ruse as gospel), and the trustworthiness of the organization that perpetrated this ruse, well-intentioned or not.

This book relates to current research into a Young Earth paradigm, to John Keel's discoveries about our planet, and Fr Malachi Martin's insights (in his now out-of-print books). We are indeed sheep who are manipulated and kept ignorant -- for a reason. While knowing what these men have to say may be the "booby prize" (as in: 'what can you do with this knowledge?'), it will provide interesting reading. Didn't someone say: "...and the Truth will set you free."?? For you to judge if this book contains the truth.

Introduction to Satellite Communication (Artech House Space Applications Series)

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A good addition to your telecommunication references
"Must have" for anyone in Satellite Communications.
Thorough coverage of Satellite Communications
This book has been updated in 1999

Introduction to Satellite Communication (Artech House Space Applications Series)
Bruce R. Elbert
Manufacturer: Artech House Publishers
ProductGroup: Book
Binding: Hardcover

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ASIN: 0890069611

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A good addition to your telecommunication references.......2002-11-29

This book is very useful if you are trying to pave your way into the field of satellite communications.
You will later find out that the book can still serve you as a handy reference when you are already involved and experienced with satellite communications.

"Must have" for anyone in Satellite Communications........1999-09-15

Bruce Elbert's Introduction to Satellite Communications is the very best starting point for learning the basics of communications by satellite. Its scope goes beyond generalities but deals with specific topics from the world of satellite. Well organized and readable, it is an excellent companion to Mr. Elbert's other book, The Satellite Communication Applications Handbook. Both are "must read" and "must have" references for engineers and non-technical types!

Thorough coverage of Satellite Communications.......1999-08-17

This book does a great job of discussing commercial satellite communications. It is up to date, and includes excellent industry examples and technical details. This book will fill in your knowledge gaps.

This book has been updated in 1999.......1999-08-17

Get the newest version from Artech House publishers. It's up to date and very informative.

Average customer rating:

Excellent supplement
best intro to architectural structures
understanding how structure work with architecture

Understanding Structures
Fuller Moore
Manufacturer: McGraw-Hill Science/Engineering/Math
ProductGroup: Book
Binding: Paperback

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ASIN: 0070432538

Book Description

This conceptual introduction to architectural structures covers all the basic structural principles and terms, explains how to use statistics of equilibrium formulae to calculate beam reactions, and employs illustrations and multi-exposure model photographs to provide a compelling overall guide to structural behavior. Also distinguishing this guide from many others on the market are its case studies and useful preliminary sizing data.

Customer Reviews:

Excellent supplement.......2007-04-20

This is a great book to act as a conceptual supplement architects taking courses in structures. Glad I bought mine when it was still going for only $35.00 used. Knowing how good it is I would actually consider paying the high used prices it is going for now.

best intro to architectural structures.......2003-10-01

Excellent intro to architectural structures. Strong on principles and concepts with numerous case studies; illustrations (by the author) alone are worth the price; expensive.

understanding how structure work with architecture.......2001-06-06

i am an architect. my professor has translated this book in farsi for introduce this book to his students. i think this book is very useful for architects, because they can understand structures good with many good examples.

Praxis Manned Spaceflight Log 1961-2006 (Springer Praxis Books / Space Exploration)

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Praxis Manned Spaceflight Log 1961-2006
Who did what - and When?
A very great book
A must have!

Praxis Manned Spaceflight Log 1961-2006 (Springer Praxis Books / Space Exploration)
Tim Furniss , David J. Shayler , and Michael D. Shayler
Manufacturer: Praxis
ProductGroup: Book
Binding: Paperback

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ASIN: 0387341757

Book Description

Praxis Log of Manned Spaceflight 1961-2006 will open with a section entitled: Quest for Space, which will provide an explanation of the methods employed to get in and out of orbit and brief overviews of the different international space programmes. It will be a complete chronological log of all attempted orbital manned spaceflights, including the X-15 "astroflights" of the 1960s that only achieved an altitude of c. 50 miles and the two 1961 Mercury and Redstone missions which were non-orbital. There will be an image depicting each manned spaceflight, and data boxes containing brief biographies of all the space travellers and basic flight data. The main text will be a narrative of each mission, its highlights and accomplishments, including those strange facts and humorous stories that are connected to every mission.

By targeting publication in September 2006, the return to flight of the Shuttle, two more Soyuz TMA launches and, quite possibly, a second Chinese manned mission. The resulting book will be a handy reference to all manned spaceflights, the names astronauts and cosmonauts who flew on each mission, and their roles and accomplishments. Recent announcements of a return to the Moon and eventual manned flights to Mars, as new hardware and procedures are developed to support these long-range programs, emphasizes the case for future updates of this book.

Customer Reviews:

Praxis Manned Spaceflight Log 1961-2006 .......2007-06-27

A very comprehensive account of manned space flight. The book contains a time period overview of space travel plus a detailed account of each flight. Enjoyable reading. A must-have for all space buffs!

Who did what - and When?.......2007-04-20

This one is big as a medium size telephone directory - around 820 pages - but it has to be. Chronicling some 250 space flight since April 12, 1961 up to September 29, 2006, and the participants from Yuri Gagarin to Anousheh Ansari, in lucid prose and memory-stirring photographs, this is a worthy follow-up of the Tim Furniss earlier chronicling of the first 103 space flights. That milestone was passed in April 1983. We tend to equal "space flight" with "flights to Earth Orbit" or "Flight to the Moon", but suborbital flight to more than 80 kilometres - 13 in the X-15 rocket plane and 3 in the comercial "Spaceship One" are included as official flights that reached space. Aborts during launches are also included, as are the incredibly sad listings of the crew of STS 51-L, where Gregory Jarvis and Christa McAuliffe attained only 1 minute of spaceflight experience, before that ascent was so cruelly - and unnecessarily - terminated.
The Authors have visely chosen to present all the numerical data in both metric and imperial measurement. If I have to search for something missing, I would wish for an alphabetic index of persons, who participated in which flight style, but then the size of this volume, already in that class which seriously hampers the compulsory bed-reader, clearly would have grown quite out of hand. Let us be thankful for the mass of facts we already have got here.
For the veteran armchair astronaut this volume brings back a lot of memories, and still succeeds in serving up a plethora of data that has slipped the memory over those 45 years. For the young reader, this presents the scope of Mankinds first forays off our planetary shores and trips to the offshore island of the Moon. It's an incredible history after all, and it's all here.

A very great book.......2007-03-30

I was really impressed by the Praxis Manned Spaceflight Log 1961-2006.
Simply the best !!! A book with many details of each manned space mission since the Gagarin's flight. Highly recommended. More than 820 pages rich with any type of information.

A must have!.......2007-02-11

An amazing publication: covers Vostok-1 (Gagarin) to Soyuz TMA-9. Tons of info for each flight: International designation; launched; Launch site; Landed; Landing site; Launch vehicle (for the shuttle you have the tank number, the SRB set and the SSME engines); Duration; Callsign; Objective; Flight Crew; Flight Log and finally Milestones. Also three chapters cover respectively: Reaching the heavens (access/method; Space flight methods/launch systems); The Quest for Space; The orbital programmes (Vostok, Mercury, Apollo, Shuttle, Salyut, Shenzhou etc..).
An outstand reference works for anybody who is interested in the history of spaceflight!
A must have on one's bookshelf.

Optimization by Vector Space Methods (Series in Decision and Control)

Average customer rating:

Elegant and astonishing
A Good Book but Seriously Overpriced
This is a true classic
Simply the perfect math book
Thank You Dr. Luenberger

Optimization by Vector Space Methods (Series in Decision and Control)
David G. Luenberger
Manufacturer: Wiley-Interscience
ProductGroup: Book
Binding: Paperback

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ASIN: 047118117X

Book Description

Engineers must make decisions regarding the distribution of expensive resources in a manner that will be economically beneficial. This problem can be realistically formulated and logically analyzed with optimization theory. This book shows engineers how to use optimization theory to solve complex problems. Unifies the large field of optimization with a few geometric principles. Covers functional analysis with a minimum of mathematics. Contains problems that relate to the applications in the book.

Customer Reviews:

Elegant and astonishing.......2006-03-17

Professor Luenberger unites many areas of optimization using a few principles from functional analysis. The explanations are clear and the proofs are compact and elegant. This book is your tool for understanding the deep connection between linear programming, convex optimization, game theory, optimal control and series approximation (e.g. Fourier series).

Luenberger's book has over 1300 citations as of March 2006. In my opinion, the material in this book is essential for any graduate student or professional who intends to contribute to the literature in optimization or optimal control.

A Good Book but Seriously Overpriced.......2005-01-15

The exposition is pretty clear and the book has a good number of worked non-trivial examples. At $40 this would be a great book, but $100 for a PAPERBACK book written 30 years ago is a bit ridiculous. The first 1/4 of the book is also a (very) basic introduction to functional analysis which, if you have had any contact with this subject before, you will probably skip making the book quite short.

This is a true classic.......2004-12-18

This book is a timeless classic, filled with extraordinarily powerful mathematics and applicable to just about every serious subject area. Luenberger did a masterful job of writing a book that will "unravel the spaghetti" seen in most other books. The visual perspectives he provides to seemingly abstract ideas are the key.

Simply the perfect math book.......2003-07-04

Optimization by Vector Space Methods, by David Luenberger, is one of the finest math texts I have ever read, and I've read hundreds. Many years ago this book sparked my interest in optimization and convinced me that the abstract mathematics I had been immersed in actually would be applicable to real problems. Since then, Luenberger's book has inspired several of my graduate students. I merely lent them my copy, and Luenberger did the rest; he drew them in by carefully laying the foundation for an elegant theory, with just the right mix of formalism and intuition, and opened their eyes to the beauty and practicality of abstract mathematics. Anyone with an interest in higher-level mathematics (beyond multi-variable calculus, say) would benefit from exposure to this finely-crafted book. I daresay, the rampant math anxiety that is so prevalent in the West would be substantially reduced if more authors would take such meticulous care in presenting their material.

The format of Luenberger's book is also extremely appealing in a way that I cannot quite put my finger on. The typography and illustrations are inherently crisp and inviting; they draw you in. There is nothing at all superfluous or gratuitous in this book. It is utterly to-the-point, methodical, and above all, clear. The techniques are developed starting from an elementary treatment of vector spaces, then proceeding on to Banach spaces and Hilbert spaces. Along the way, Luenberger introduces convexity, cones, basic topology, random variables, minimum-variance estimators, and least squares, among many other things. There is a recurring theme of duality, which can be used in a way analogous to the inner product of a Hilbert space. In particular, the familiar projection theorems of Hilbert spaces can be echoed in simpler normed linear spaces using duality, which Luenberger motivates and covers beautifully.

The book also covers some of the standard fare of functional analysis, such as the Han-Banach theorem, strong and weak convergence, and the Banach inverse theorem. However, Luenberger never wanders too far off into abstract nonsense; around every corner lay tantalizing application of these ideas to optimization. Luenberger first explores optimization of functionals then covers constrained optimization, which builds upon concepts such as positive cones and Lagrange multipliers. The optimization methods themselves have endless applications in fields such as computer vision, computer graphics, economics, and physics. Indeed, the list is effectively endless as optimization techniques pervade math and science.

I'm certain that the appeal of this book is helped immeasurably by the inherent beauty of the subject matter. Hilbert-space methods are lovely in themselves--they possess a structure that engages one's geometric intuition while at the same time admitting convenient algebraic properties. Once you are in the habit of phrasing problems in abstract settings such as Hilbert spaces, it forever changes how you look at things; you cannot help but look past the clutter to the essence of a problem (or, at least try very hard to do so). While this material is not nearly as abstract as, say, category theory, it nevertheless hits a high point in mathematics--a point more people ought to experience.

If you've had some exposure to optimization methods, or need to apply them in the context of computer vision, graphics, or finance, to mention just a few areas, then I urge you to take a look at Luenberger's fine book. It too hits a high point in clarity of mathematical writing. Combine beautiful theory with endless applications and lucid writing, and you have a winner of a book.

Thank You Dr. Luenberger.......2002-10-15

I owe Dr Luenberger a million thanks for writing this book. As his student, I think he is the master of putting complex issues in simple words. Your faithful student..Jayanth Krishnan

Spacecraft Dynamics and Control: A Practical Engineering Approach (Cambridge Aerospace Series)

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Spacecraft Dynamics and Control: A Practical Engineering Approach (Cambridge Aerospace Series)
Marcel J. Sidi
Manufacturer: Cambridge University Press
ProductGroup: Book
Binding: Paperback

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ASIN: 0521787807

Book Description

Used increasingly in telecommunications, scientific research, surveillance, and meteorology, satellites rely heavily on complex onboard control systems. This book explains the basic theory of spacecraft dynamics and control and the practical aspects of controlling a satellite. The emphasis is on analyzing and solving real-world engineering problems. Among the topics covered are orbital dynamics, attitude dynamics, gravity gradient stabilization, single and dual spin stabilization, attitude maneuvers, attitude stabilization, and structural dynamics and liquid sloshing.

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