The Exploration of Space |
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Pagina 24
1 acceleration will steadily increase as propellant is used up and the rocket becomes lighter . ( 3 ) The final speed depends directly on the ejection ( or exhaust ) speed : doubling the latter will double the former , and so on .
1 acceleration will steadily increase as propellant is used up and the rocket becomes lighter . ( 3 ) The final speed depends directly on the ejection ( or exhaust ) speed : doubling the latter will double the former , and so on .
Pagina 25
In addition , liquid - propellant rockets are fully controllable : the thrust can be regulated , just as in an ordinary engine , by “ throttling back " Figure 6. The Two Types of Rocket the fuel supply . Figure 6 shows , schematically ...
In addition , liquid - propellant rockets are fully controllable : the thrust can be regulated , just as in an ordinary engine , by “ throttling back " Figure 6. The Two Types of Rocket the fuel supply . Figure 6 shows , schematically ...
Pagina 27
But rockets usually travel vertically , not horizontally , and this means that gravity is continuously pulling them back ... The effect of this reduction , for a rocket rising vertically , is 20 m.p.h. for every second of climb or 1,200 ...
But rockets usually travel vertically , not horizontally , and this means that gravity is continuously pulling them back ... The effect of this reduction , for a rocket rising vertically , is 20 m.p.h. for every second of climb or 1,200 ...
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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 moving 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 seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole
Informații bibliografice
| Titlu | The Exploration of Space |
| Autor | Arthur Charles Clarke |
| Editor | Temple Press, 1951 |
| Exemplar original de la | Universitatea din Michigan |
| Scanată la | 14 Dec 2007 |
| Lungime | 198 pagini |
| Exportă citatul | BiBTeX EndNote RefMan |