The Exploration of SpaceTemple Press, 1951 - 198 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 31
Pagina 40
... direction must clearly have some 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 ...
... direction must clearly have some 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 ...
Pagina 73
... direction of motion - which is itself a quite arbitrary quantity , depending entirely on the viewpoint of the ... direction could have its rotation stopped by a rocket fired against the direction of spin . This method would be ( 1 ) ( 11 ) ...
... direction of motion - which is itself a quite arbitrary quantity , depending entirely on the viewpoint of the ... direction could have its rotation stopped by a rocket fired against the direction of spin . This method would be ( 1 ) ( 11 ) ...
Pagina 83
... direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with its direction of motion : it could be spinning or pointing in space in ...
... direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with its direction of motion : it could be spinning or pointing in space in ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
Drept de autor | |
22 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
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