The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 38
... motors , a payload of 110 pounds could be sent into an orbit round the Earth . The rocket would be a three - step one with a total weight of 150 tons , the first step being powered by a group of seven V.2 motors . ( In addition , a ...
... motors , a payload of 110 pounds could be sent into an orbit round the Earth . The rocket would be a three - step one with a total weight of 150 tons , the first step being powered by a group of seven V.2 motors . ( In addition , a ...
Pagina 53
... motors would produce a feeling of weight once more - a feeling which would last only as long as the motors were operating , and which might have any intensity from a barely perceptible " tug " to a crushing pressure that would prevent ...
... motors would produce a feeling of weight once more - a feeling which would last only as long as the motors were operating , and which might have any intensity from a barely perceptible " tug " to a crushing pressure that would prevent ...
Pagina 75
... motors are aimed at the Moon . Using the rockets to produce a deceleration of one gravity , a speed of fall of 5,000 m.p.h. could be checked in four minutes , during which time the ship would cover a distance of a hundred and sixty ...
... motors are aimed at the Moon . Using the rockets to produce a deceleration of one gravity , a speed of fall of 5,000 m.p.h. could be checked in four minutes , during which time the ship would cover a distance of a hundred and sixty ...
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