The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 39
... problem of retrieving the film will not arise . These pictorial records , although spectacular and exciting ( and also of some meteorological interest ) , are much less im- portant than the information obtained by the instruments ...
... problem of retrieving the film will not arise . These pictorial records , although spectacular and exciting ( and also of some meteorological interest ) , are much less im- portant than the information obtained by the instruments ...
Pagina 64
... problem is getting the heat out of the pile quickly enough to prevent it melting — and then to transfer this heat to the propellant . That is the purely engineering problem , and it is an exceedingly difficult one . But there is also ...
... problem is getting the heat out of the pile quickly enough to prevent it melting — and then to transfer this heat to the propellant . That is the purely engineering problem , and it is an exceedingly difficult one . But there is also ...
Pagina 188
... problem to those wishing to take an active part in the develop- ment of astronautics , for almost all research on rockets is now carried out by military establishments and is covered by various security classifications . The technical ...
... problem to those wishing to take an active part in the develop- ment of astronautics , for almost all research on rockets is now carried out by military establishments and is covered by various security classifications . The technical ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole