The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 13
... 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 brick is only a small fraction of that of the trolley and its cargo , the velocity with which the vehicle moves GE ...
... ( Figure 5 ) . He takes one and throws it towards the right , producing a recoil as he does so . Since the mass of the brick is only a small fraction of that of the trolley and its cargo , the velocity with which the vehicle moves GE ...
Pagina 27
... Figure 7. The Effect of Fuel Weight on Rocket Speeds ROCKET REACHES 3 TIMES EXHAUST SPEED ROCKET REACHES EXHAUST ... Figure 7 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on ...
... Figure 7. The Effect of Fuel Weight on Rocket Speeds ROCKET REACHES 3 TIMES EXHAUST SPEED ROCKET REACHES EXHAUST ... Figure 7 is an attempt to show in diagrammatic form the effect of a rocket's fuel - weight to empty - weight ratio on ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole