The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 29
... rocket and its method of operation before us , we can now go on to discuss the magnitude of the task confronting it , if it is to be used to lift us away from the Earth . 4. Escaping from Earth " Now , here , you THE ROCKET 29.
... rocket and its method of operation before us , we can now go on to discuss the magnitude of the task confronting it , if it is to be used to lift us away from the Earth . 4. Escaping from Earth " Now , here , you THE ROCKET 29.
Pagina 50
... operation ( called " entry by braking ellipses " ) is shown in Figure 11. It is of enormous importance , as it implies that no rocket power need be used for landing on a planet with a reasonably dense atmosphere , such as Earth , Venus ...
... operation ( called " entry by braking ellipses " ) is shown in Figure 11. It is of enormous importance , as it implies that no rocket power need be used for landing on a planet with a reasonably dense atmosphere , such as Earth , Venus ...
Pagina 54
... operation would be exactly similar to that of flight refuelling in the air - the actual speeds of the aircraft being of no importance as long as they are equal . In the case of orbital refuelling , the problem of contact should be ...
... operation would be exactly similar to that of flight refuelling in the air - the actual speeds of the aircraft being of no importance as long as they are equal . In the case of orbital refuelling , the problem of contact should be ...
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