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List Of Canceled Launch Vehicle Designs
Even before the launch of Sputnik 1, there were various types of launch vehicle designs. The launch vehicle designs described below are either canceled or never left the drawing board. 20th century 21st century See also *Comparison of orbital launch systems *Non-rocket spacelaunch *List of orbital launch systems *List of private spaceflight companies#Crew and cargo transport vehicles *Spaceplane *List of crewed lunar lander designs Further reading * ''SP-4221 The Space Shuttle Decision'Chapter 8(NASA) * *T.A. Heppenheime(NASA, 1998) External links{cbignore, bot=medic*[http://www.spacefuture.com/vehicles/designs.shtml Space Future - Vehicle Designs]Proposed or planned spacecraft (Wikimedia Commons) Lists of spacecraft, Launch vehicle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sputnik 1
Sputnik 1 (; see § Etymology) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries ran out, and continued in orbit for three months until aerodynamic drag caused it to fall back into the atmosphere on 4 January 1958. It was a polished metal sphere in diameter with four external radio antennas to broadcast radio pulses. Its radio signal was easily detectable by amateur radio operators, and the 65° orbital inclination made its flight path cover virtually the entire inhabited Earth. The satellite's unanticipated success precipitated the American Sputnik crisis and triggered the Space Race, part of the Cold War. The launch was the beginning of a new era of political, military, technological and scientific developments. The word ''sputnik'' is Russian for ''satellite'' w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
