The Exploration of SpacePresents a nonscientific explanation of space exploration and a view of future life on other planets. |
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Pagina 76
Suppose the ship still has a little fuel , and suppose that by some means ( see page 103 ) it is turned round in space so that the rocket motor points in the direction of motion . Firing the rockets will then reduce the ship's speed and ...
Suppose the ship still has a little fuel , and suppose that by some means ( see page 103 ) it is turned round in space so that the rocket motor points in the direction of motion . Firing the rockets will then reduce the ship's speed and ...
Pagina 87
( C ) Finally , we have the " deep space " type of ship which never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and ...
( C ) Finally , we have the " deep space " type of ship which never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and ...
Pagina 103
Suppose there was a flywheel at the ship's center of gravity , and imagine that at first it is fixed relative to the slowly turning ship . If now a motor starts to spin the flywheel in the direction shown , as the flywheel builds up ...
Suppose there was a flywheel at the ship's center of gravity , and imagine that at first it is fixed relative to the slowly turning ship . If now a motor starts to spin the flywheel in the direction shown , as the flywheel builds up ...
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Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
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Termeni și expresii frecvente
able acceleration achieved actual already appear astronautics atmosphere become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discuss distance Earth effect energy equal escape exist exploration extremely fact fall field Figure fuel give gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing later least less light limit live look lunar Mars material matter means miles million minutes Moon moving necessary never normal observed once orbit oxygen perhaps period planets possible practical present pressure probably problem produce purely radio range reach reason remain rocket round satellite scientific seems seen ship simple Solar space spaceship speed stars surface telescope temperature thousand tion velocity Venus weight
Referințe la această carte
The MIR Space Station: A Precursor to Space Colonization David M. Harland Vizualizare fragmente - 1997 |
Space Travel: A History Wernher Von Braun,Frederick Ira Ordway (III),Fred Durant,David Dooling Vizualizare fragmente - 1985 |