The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 13
... limit to the height at which con- ventional aircraft can ever operate . That limit is between 10 and 15 miles — or , roughly speaking , where the THE EARTH AND ITS NEIGHBOURS 13.
... limit to the height at which con- ventional aircraft can ever operate . That limit is between 10 and 15 miles — or , roughly speaking , where the THE EARTH AND ITS NEIGHBOURS 13.
Pagina 15
... limit to the speed we can develop near the Earth's surface on the way into space and — much more important — it offers a means of making a safe landing on the return . This thin blanket of air , without which life as we know it would be ...
... limit to the speed we can develop near the Earth's surface on the way into space and — much more important — it offers a means of making a safe landing on the return . This thin blanket of air , without which life as we know it would be ...
Pagina 40
... limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started making rocket reconnaissances as long as they were at a legal height ! We will return , in Chapter 15 , to some of ...
... limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started making rocket reconnaissances as long as they were at a legal height ! We will return , in Chapter 15 , to some of ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 trolley Uranus voyage weight