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astronautix.com RAE

RAE
RAE -

Credit: NASA. 36,207 bytes. 341 x 340 pixels.



Class: Astronomy. Type: Radio. Nation: USA. Agency: NASA.

The Radio Astronomy Explorer investigated low frequency (long wave-length) radio emissions from the sun and its planets as well as galactic and extragalactic sources. The spacecraft had a mass of about 190 kg. It was equipped with a dipole antenna (36 m from tip to tip) and two V-shaped antennas. These antennas consist of four 230 m long elements which form a large "X" with the spacecraft in the centre. The V-shaped antennas provided gravity gradient stabilisation. The RAE program, as planned, called for a series of four spacecraft with the first scheduled for launch in early 1968. Two missions (RAE-A and B) were approved and payloads for them were selected. Missions RAE-C, and D were not approved. RAE-A and B were intended for a circular orbit with an altitude of 5800 km. Inclination of the orbit to the equator was 58 degrees retrograde and the orbital period was 3.83 hours.


Specification

Total Mass: 190 kg.


RAE Chronology


04 July 1968 Explorer 38 Program: Explorer. Launch Site: Vandenberg . Launch Vehicle: Delta J. Mass: 190 kg. Perigee: 5,835 km. Apogee: 5,861 km. Inclination: 120.9 deg.

Radio Astronomy Explorer; Earth, solar, cosmic radio emission data. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).


10 June 1973 Explorer 49 Program: Explorer. Launch Site: Cape Canaveral . Launch Vehicle: Delta 1914. Mass: 328 kg.

Radio Astronomy Explorer; measured galactic, stellar radio noise. Lunar Orbit (Selenocentric). Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).



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Last update 12 March 2001.
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© Mark Wade, 2001 .