The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 11
... figure was reached . As we ascend from the Earth's surface , the pressure and density of the air fall steadily , and in Figure 2 an attempt has been made to show this on the correct scale . The greatest height at which men can live ...
... figure was reached . As we ascend from the Earth's surface , the pressure and density of the air fall steadily , and in Figure 2 an attempt has been made to show this on the correct scale . The greatest height at which men can live ...
Pagina 20
... ( Figure 5 ) . He takes one and throws it towards the right , producing a recoil as he does so . Since the mass of the bricks is only a small fraction of that of the trolley and its cargo , the velocity with which the vehicle moves Figure ...
... ( Figure 5 ) . He takes one and throws it towards the right , producing a recoil as he does so . Since the mass of the bricks is only a small fraction of that of the trolley and its cargo , the velocity with which the vehicle moves Figure ...
Pagina 27
... Figure 7. The Effect of Fuel Weight on Rocket Speeds ROCKET REACHES 3 TIMES EXHAUST SPEED ROCKET REACHES EXHAUST SPEED EMPTY WEIGHT FULL WEIGHT ROCKET REACHES 2 TIMES EXHAUST SPEED EMPTY WEIGHT EMPTY WEIGHT FUEL WEIGHT 6.4 1.72 FUEL ...
... Figure 7. The Effect of Fuel Weight on Rocket Speeds ROCKET REACHES 3 TIMES EXHAUST SPEED ROCKET REACHES EXHAUST SPEED EMPTY WEIGHT FULL WEIGHT ROCKET REACHES 2 TIMES EXHAUST SPEED EMPTY WEIGHT EMPTY WEIGHT FUEL WEIGHT 6.4 1.72 FUEL ...
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