The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 28
... means that final speeds of twice the exhaust speed may be practicable . But the third rocket represents something which any engineer would shudder to contemplate , since it involves squeezing 19 tons of fuel into a structure weighing ...
... means that final speeds of twice the exhaust speed may be practicable . But the third rocket represents something which any engineer would shudder to contemplate , since it involves squeezing 19 tons of fuel into a structure weighing ...
Pagina 143
... mean that the danger of leaks or explosive decompression , always present to some extent on a world like the Moon , would be removed . pressures inside and out were the same , even if the composi- The existence of an atmosphere also means ...
... mean that the danger of leaks or explosive decompression , always present to some extent on a world like the Moon , would be removed . pressures inside and out were the same , even if the composi- The existence of an atmosphere also means ...
Pagina 175
... means it would be necessary to have an extremely efficient source of nuclear energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy ...
... means it would be necessary to have an extremely efficient source of nuclear energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar 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 Propontis 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