Pioneers of Rocket Technology: Selected WorksNational Aeronautics and Space Administration, 1965 - 162 lappuses |
Bieži izmantoti vārdi un frāzes
according to equation active agent Aeronautics aerostat airfoils angle of attack atmospheric drag atmospheric resistance axis base body calculations centrifugal force combustion chamber compounds Conquest of Interplanetary construction Cosmic Space cosmonauts cylinder deceleration density descent developed direction earth earth's surface energy equal exit tube F. A. Tsander flight force of gravity formula fuel gases gyroscope heat hydrogen interplanetary communication interplanetary space K. E. Tsiolkovskiy Kaluga Kibal'chich Kondratyuk layers lifting force lifting surface liquid liquid oxygen m/sec manuscript mass materials moon Moscow Moscow-Leningrad motion multistage rockets necessary Nezhdanovskiy Nonconductor obtain orbit oxygen particles passive load planet possible pressed gunpowder pressure problem quantity ratio reaction Reactive Devices reactive engines reflectors relative return velocity rocket engines rocket technology rocket velocity rotation satellite scientists segment solar system Soviet Space by Reactive spaceship tangential tanks temperature tion trajectory utilization vehicle Vetchinkin weight
Populāri fragmenti
108. lappuse - Approximately speaking, considering the thickness of the atmosphere to be insignificant in comparison with the radius of the earth, where R is the radius of the earth, r. is the distance from the center of the earth to the...
152. lappuse - ... several other methods of decreasing the fuel reserves necessary for the execution of interplanetary flights. "In order not to use up a large quantity of active substance," he wrote in the first version of the manuscript, "the entire vehicle need not land, its velocity need only be reduced BO that it move uniformly in a circle as near as possible to the body on which the landing is to be made. Then the inactive part separates from it, carrying the amount of active agent necessary for landing the...
131. lappuse - It is possible, according to Patent No. 13U (l88o), to prepare an explosive /6CT mixture from two liquids that were mixed Just before an explosion (these are hyponitrous acid NO and kerosene, two parts of the former and one part of the latter; another such combination is hyponitrous acid and picric acid) . This method can be used in designing a flying rocket with a large reserve of explosives, which are produced gradually according to the rate of combustion. One liquid (a) is pumped through a tube...
95. lappuse - ... accordingly. Due to the reduction in lifting force coefficient at large rocket velocities, it would not be able to escape from the comparatively dense atmospheric layers before reaching a velocity of about TOO m/sec (at which the apparent gravity already begins to fall off sharply) . Consequently, it is necessary to pay special attention to the problem of the additional drag due to viscosity of the atmosphere d and heating of both the...
150. lappuse - Still another special type of rocket is possible, one which utilizes energy from without, ie, from the light of the sun. In practice, however, this method of operating a rocket is inapplicable at the present time, or almost inapplicable because of purely technical difficulties... In view of these difficulties, for now we will shelve the idea of a rocket that functions on the energy of solar radiation