Aerospace engineers from the United States

166 quotes found

"The person who merely watches the flight of a bird gathers the impression that the bird has nothing to think of but the flapping of its wings. As a matter of fact this is a very small part of its mental labor. To even mention all the things the bird must constantly keep in mind in order to fly securely through the air would take a considerable part of the evening. If I take this piece of paper, and after placing it parallel with the ground, quickly let it fall, it will not settle steadily down as a staid, sensible piece of paper ought to do, but it insists on contravening every recognized rule of decorum, turning over and darting hither and thither in the most erratic manner, much after the style of an untrained horse. Yet this is the style of steed that men must learn to manage before flying can become an everyday sport. The bird has learned this art of equilibrium, and learned it so thoroughly that its skill is not apparent to our sight. We only learn to appreciate it when we try to imitate it. Now, there are two ways of learning to ride a fractious horse: One is to get on him and learn by actual practice how each motion and trick may be best met; the other is to sit on a fence and watch the beast a while, and then retire to the house and at leisure figure out the best way of overcoming his jumps and kicks. The latter system is the safest, but the former, on the whole, turns out the larger proportion of good riders. It is very much the same in learning to ride a flying machine; if you are looking for perfect safety, you will do well to sit on a fence and watch the birds; but if you really wish to learn, you must mount a machine and become acquainted with its tricks by actual trial."

- Wilbur Wright

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"Herr Otto Lilienthal seems to have been the first man who really comprehended that balancing was the first instead of the last of the great problems in connection with human flight. He began where others left off, and thus saved the many thousands of dollars that it had theretofore been customary to spend in building and fitting expensive engines to machines which were uncontrollable when tried. He built a pair of wings of a size suitable to sustain his own weight, and made use of gravity as his motor. This motor not only cost him nothing to begin with, but it required no expensive fuel while in operation, and never had to be sent to the shop for repairs. It had one serious drawback, however, in that it always insisted on fixing the conditions under which it would work. These were, that the man should first betake himself and machine to the top of a hill and fly with a downward as well as a forward motion. Unless these conditions were complied with, gravity served no better than a balky horse — it would not work at all... We figured that Lilienthal in five years of time had spent only about five hours in actual gliding through the air. The wonder was not that he had done so little, but that he had accomplished so much. It would not be considered at all safe for a bicycle rider to attempt to ride through a crowded city street after only five hours’ practice, spread out in bits of ten seconds each over a period of five years; yet Lilienthal with this brief practice was remarkably successful in meeting the fluctuations and eddies of wind gusts. We thought that if some method could be found by which it would be possible to practice by the hour instead of by the second there would be hope of advancing the solution of a very difficult problem."

- Wilbur Wright

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"My brother and I became seriously interested in the problem of human flight in 1899 ... We knew that men had by common consent adopted human flight as the standard of impossibility. When a man said, “It can’t be done; a man might as well try to fly,” he was understood as expressing the final limit of impossibility. Our own growing belief that man might nevertheless learn to fly was based on the idea that while thousands of the most dissimilar body structures, such as insects, fish, reptiles, birds and mammals, were flying every day at pleasure, it was reasonable to suppose that man might also fly... We accordingly decided to write to the Smithsonian Institution and inquire for the best books relating to the subject.... Contrary to our previous impression, we found that men of the very highest standing in the profession of science and invention had attempted to solve the problem... But one by one, they had been compelled to confess themselves beaten, and had discontinued their efforts. In studying their failures we found many points of interest to us. At that time there was no flying art in the proper sense of the word, but only a flying problem. Thousands of men had thought about flying machines and a few had even built machines which they called flying machines, but these were guilty of almost everything except flying. Thousands of pages had been written on the so-called science of flying, but for the most part the ideas set forth, like the designs for machines, were mere speculations and probably ninety per cent was false. Consequently those who tried to study the science of aerodynamics knew not what to believe and what not to believe. Things which seemed reasonable were often found to be untrue, and things which seemed unreasonable were sometimes true. Under this condition of affairs students were accustomed to pay little attention to things that they had not personally tested."

- Wilbur Wright

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"Spaceflight will never tolerate carelessness, incapacity, and neglect. Somewhere, somehow, we screwed up. It could have been in design, build, or test. Whatever it was, we should have caught it. We were too gung ho about the schedule and we locked out all of the problems we saw each day in our work. Every element of the program was in trouble and so were we. The simulators were not working, Mission Control was behind in virtually every area, and the flight and test procedures changed daily. Nothing we did had any shelf life. Not one of us stood up and said, "Dammit, stop!" I don't know what Thompson's committee will find as the cause, but I know what I find. We are the cause! We were not ready! We did not do our job. We were rolling the dice, hoping that things would come together by launch day, when in our hearts we knew it would take a miracle. We were pushing the schedule and betting that the Cape would slip before we did. From this day forward, Flight Control will be known by two words: "Tough and Competent." Tough means we are forever accountable for what we do or what we fail to do. We will never again compromise our responsibilities. Every time we walk into Mission Control we will know what we stand for. Competent means we will never take anything for granted. We will never be found short in our knowledge and in our skills. Mission Control will be perfect. When you leave this meeting today you will go to your office and the first thing you will do there is to write "Tough and Competent" on your blackboards. It will never be erased. Each day when you enter the room these words will remind you of the price paid by Grissom, White, and Chaffee. These words are the price of admission to the ranks of Mission Control."

- Eugene F. Kranz

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"Over the years I've met many people who were heroes, and the interesting thing I've found about every single one of them, bar one, was that they did not think of themselves as heroes. They would say things like, "I couldn't leave my buddy out there. I couldn't do that." Or, someone would say, "Those bastards were shooting at us, and I was going to shoot back before one of my men got hurt." Or, "Shucks, sir, it was my duty." They say beauty is in the eye of the beholder. Well, valor is also in the eye of the beholder. Not one of the people who hold the Medal of Honor said at the time he took action, "Well, I think I'm getting ready to carry out a heroic act." Absolutely not. In the minds of every single one of them at the time was something like, "Gosh, I've got to do it, because it's my duty to my country." Not even that. Rather, "It's my duty to my outfit." And not even that. "It's my duty to my buddy on my right, or my buddy on my left. That's what it was all about, as the stories in this volume will show. That's truly what it was all about. And somebody else- the recipients probably don't even know to this day who- saw them do it. And said, "There's a hero." And truly the recipients of this great award, I am sure, even to this day would say, "Gosh, it was just my duty. It was just my job. It was just my buddy It was just my outfit. I had to do it." And that's what makes them heroes in my mind. The men who tell their stories in this book- indeed all the recipients of the Medal of Honor- embody the sense of duty in its deepest form. We thank them for doing their duty in serving their country."

- Norman Schwarzkopf Jr.

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"In April of 1959, ten of this country's leading scholars forgathered on the campus of Purdue University to discuss the nature of information and the nature of decision... What interests do these men have in common?... To answer these questions it is necessary to view the changing aspect of the scientific approach to epistemology, and the striking progress which has been wrought in the very recent past. The decade from 1940 to 1950 witnessed the operation of the first stored- program digital computer. The concept of information was quantified, and mathematical theories were developed for communication (Shannon) and decision (Wald). Known mathematical techniques were applied to new and important fields, as the techniques of complex- variable theory to the analysis of feedback systems and the techniques of matrix theory to the analysis of systems under multiple linear constraints. The word "cybernetics" was coined, and with it came the realization of the many analogies between control and communication in men and in automata. New terms like "operations research" and "system engineering" were introduced; despite their occasional use by charlatans, they have signified enormous progress in the solution of exceedingly complex problems, through the application of quantitative ness and objectivity."

- Robert E. Machol

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"The movement of human beings off the planet out into the Universe; first the Moon, and then Mars, and then who knows where, is just beginning and there is nothing that can stop it. None of us know the timetable, none of us know whether it's going to happen rapidly or it's going to happen very slowly. Eventually, as the centuries unfold, human beings will populate all these places and maybe a thousand years from now, or maybe it's two thousand or five thousand, there will be more human beings living off the Earth than live on it. Its just going to happen and we don't need to be anxious about it. We don't need to worry that next year they decide to cut the space station. If they cut the space station next year, I hope they don't, but if they did, it's not the end of the world. We're going to eventually have a wonderful space station. Eventually there are going to be cities in space. If Chicago had been founded a hundred years later, we wouldn't even know that now. I don't know when it was founded, but if it had been a hundred years later or a hundred years earlier, right now it wouldn't make any difference. It would probably look about the same. People would be just as happy doing the same things. That's the same way with space exploration. Maybe we don't go to Mars in my lifetime, maybe we don't even go till my grandkids lifetime. That's okay. Eventually it will happen."

- Alan Bean

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