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Pioneer 2
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{Short description|1958 NASA space probe designed to study the Moon}}- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
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Spacecraft design
(File:Pioneer I, Reconstructed Replica.jpg|thumb|Reconstructed replica of Pioneer 1, identical to Pioneer 2)Pioneer 2 (NSSDCA ID: PION2) was nearly identical to Pioneer 1. It consisted of a thin cylindrical midsection with a squat truncated cone frustum on each side. The cylinder was {{convert|74|cm|in|sp=us}} in diameter and the height from the top of one cone to the top of the opposite cone was {{convert|76|cm|in|sp=us}}. Along the axis of the spacecraft and protruding from the end of the lower cone was a {{convert|11|kg|lb|adj=on}} solid propellant injection rocket and rocket case, which formed the main structural member of the spacecraft. Eight small low-thrust solid propellant velocity adjustment rockets were mounted on the end of the upper cone in a ring assembly which could be jettisoned after use. A magnetic dipole antenna also protruded from the top of the upper cone. The shell was composed of laminated plastic. The total mass of the spacecraft after vernier separation but before injection rocket firing was {{convert|39.5|kg|lb}}.The scientific instrument package had a mass of 15.6 kg (34.4 lb) and consisted of an STL image-scanning television system (which replaced the NOTS (Naval Ordnance Test Station) image scanning infrared television system on Pioneer 1), a proportional counter for radiation measurements, an ionization chamber to measure radiation in space, a diaphragm/microphone assembly to detect micrometeorites, a spin-coil magnetometer to measure magnetic fields to 5 microgauss, and temperature-variable resistors to record spacecraft internal conditions. The spacecraft was powered by nickel-cadmium batteries for ignition of the rockets, silver cell batteries for the television system, and mercury batteries for the remaining circuits. The radio transmission was at 108.06 MHz through a magnetic dipole antenna for the television system, telemetry, and doppler. Ground commands were received at 115 MHz. The spacecraft was to be spin-stabilized at 1.8 revolutions per second, the spin direction approximately perpendicular to the geomagnetic meridian planes of the trajectory.References
{{reflist}}External links
- United States Space Program Progress 1958 discusses Pioneer 0 - 3 at YouTube
- Space Technology Laboratories Documents Archive
- NSSDC Master Catalog: Spacecraft Pioneer 2
- content above as imported from Wikipedia
- "Pioneer 2" does not exist on GetWiki (yet)
- time: 9:20am EDT - Sat, May 18 2024
- "Pioneer 2" does not exist on GetWiki (yet)
- time: 9:20am EDT - Sat, May 18 2024
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