The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 33
... escape from it completely if its speed is over 25,000 m.p.h. If its speed is less than this , it may either fall back again or , if it is aimed in the correct direction , it continue to orbit the Earth indefinitely in a circular or ...
... escape from it completely if its speed is over 25,000 m.p.h. If its speed is less than this , it may either fall back again or , if it is aimed in the correct direction , it continue to orbit the Earth indefinitely in a circular or ...
Pagina 34
... escape velocity as quickly as possible- and then to cut the rockets and " coast " . A commonplace but accurate analogy is given by the cyclist who builds up enough speed on the level to take him over a hill . To surmount our imaginary ...
... escape velocity as quickly as possible- and then to cut the rockets and " coast " . A commonplace but accurate analogy is given by the cyclist who builds up enough speed on the level to take him over a hill . To surmount our imaginary ...
Pagina 196
... Escape , velocity of , 32 Food provision on Moon , 118-9 requirements in spaceflight , 93-4 Galaxy size , 170 structure , 164 Galileo , G. , 2 Gas , interstellar , 92-3 Goddard , R. H. , 17-18 Godwin , Bishop Man in the Moone , 3-4 ...
... Escape , velocity of , 32 Food provision on Moon , 118-9 requirements in spaceflight , 93-4 Galaxy size , 170 structure , 164 Galileo , G. , 2 Gas , interstellar , 92-3 Goddard , R. H. , 17-18 Godwin , Bishop Man in the Moone , 3-4 ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 trolley Uranus voyage weight