The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 66
... normal atmospheric value , and up to four or five times this . The actual limits depend on the length of time the abnormal conditions last : clearly in a spaceship which might be travelling for weeks or months the pressure must be kept ...
... normal atmospheric value , and up to four or five times this . The actual limits depend on the length of time the abnormal conditions last : clearly in a spaceship which might be travelling for weeks or months the pressure must be kept ...
Pagina 99
... normal weight if the motors could maintain a constant acceleration of one gravity for the duration of the voyage - or , rather , an acceleration of this value until the half - way point and a deceleration thereafter , when the ship had ...
... normal weight if the motors could maintain a constant acceleration of one gravity for the duration of the voyage - or , rather , an acceleration of this value until the half - way point and a deceleration thereafter , when the ship had ...
Pagina 139
... normal " simply because we are used to it , and judge all other worlds accordingly . Yet it is we who are the freaks , living as we do in the narrow zone around the Sun where it is not too hot for water to boil , and not too cold for it ...
... normal " simply because we are used to it , and judge all other worlds accordingly . Yet it is we who are the freaks , living as we do in the narrow zone around the Sun where it is not too hot for water to boil , and not too cold for it ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar 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 Propontis 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