The Exploration of SpacePocket Books, 1979 - 237 pagini Presents a nonscientific explanation of space exploration and a view of future life on other planets. |
Din interiorul cărții
Rezultatele 1 - 3 din 8
Pagina 53
... achieved . V.2 lies between these extremes , though nearer the lower value : it car- ried two tons of fuel to every ton of empty - weight . It is probable that the second rocket could be built , which means that final speeds of twice ...
... achieved . V.2 lies between these extremes , though nearer the lower value : it car- ried two tons of fuel to every ton of empty - weight . It is probable that the second rocket could be built , which means that final speeds of twice ...
Pagina 62
... achieved . It will , of course , be achieved at a considerable cost . The payload of a high - performance rocket is not likely to be more than a twentieth of its total weight , which means that each step will be about twenty times the ...
... achieved . It will , of course , be achieved at a considerable cost . The payload of a high - performance rocket is not likely to be more than a twentieth of its total weight , which means that each step will be about twenty times the ...
Pagina 213
... achieved . Al- though , at the moment , we have no idea how this might be done , it must be remembered that nuclear physics is still in its infancy . Since several decades of traveling through space would be an ordeal even to the most ...
... achieved . Al- though , at the moment , we have no idea how this might be done , it must be remembered that nuclear physics is still in its infancy . Since several decades of traveling through space would be an ordeal even to the most ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
18 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration airless already astronautics astronomers atmo atmosphere body bricks build carry certainly Chapter chemical completely conquest of space consider course crew degrees F difficult direction distance Earth energy enormous escape velocity exist exploration extremely fact Figure fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere Jerry Pournelle journey Jupiter landing large number light light-years lunar Mars and Venus Martian means Mercury meteors miles in diameter million minutes missile Moon Moon's motors never normal observed once oxygen payload perhaps planetary planets Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri radar radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spin stars stations surface take-off telescope temperature thousand thrust tion trolley voyage weight weightless