The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 50
... landing as a glider , slowly shedding its speed by air resistance . This 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 ...
... landing as a glider , slowly shedding its speed by air resistance . This 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 ...
Pagina 76
... landing and 1 - g vertical take - off . If the gyroscopes and steering devices can deal with the one case - as they already do in the V.2 rocket - they can deal just as well with the other . What sort of " undercarriage " our lunar ...
... landing and 1 - g vertical take - off . If the gyroscopes and steering devices can deal with the one case - as they already do in the V.2 rocket - they can deal just as well with the other . What sort of " undercarriage " our lunar ...
Pagina 197
... landing spaceships , 49 Aircraft , use on planets , 143-4 Asteroids , 134-5 Atmosphere use for landing spaceships , 49 variation with height , 13 Atomic energy for altering planets , 148 for propulsion , 60 , 63-4 , 78 , 175 Bergerac ...
... landing spaceships , 49 Aircraft , use on planets , 143-4 Asteroids , 134-5 Atmosphere use for landing spaceships , 49 variation with height , 13 Atomic energy for altering planets , 148 for propulsion , 60 , 63-4 , 78 , 175 Bergerac ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight