Explorer 14

Summary

Explorer 14
Explorer 14 mock-up.jpg
Explorer 14 satellite
NamesEPE-B
Mission typeEarth science
OperatorNASA
Harvard designation1962 Beta Gamma 1
COSPAR ID1962-051A
SATCAT no.00432
Mission duration12 months (planned)
10 months (achieved)
Spacecraft properties
ManufacturerGoddard Space Flight Center
Launch mass40 kg (88 lb)
Start of mission
Launch date2 October 1962, 22:11:30 GMT
RocketDelta A
Launch siteCape Canaveral, LC-17B
End of mission
Last contact11 August 1963
Decay date25 May 1988
Orbital parameters
Reference systemGeocentric orbit
RegimeHighly elliptical orbit
Perigee altitude2,601.0 km (1,616.2 mi)
Apogee altitude96,189.0 km (59,769.1 mi)
Inclination42.80°
Period2184.60 minutes
Revolution no.122
 

Explorer 14 was a spin-stabilized, solar-cell-powered spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and magnetospheric and interplanetary magnetic fields. A 16-channel PFM/PM time-division multiplexed telemeter was used. The time required to sample the 16 channels (one frame period) was 0.323 seconds. Half of the channels were used to convey eight-level digital information, and the others were used for analog information. During ground processing of the telemetered data, the analog information was digitized with an accuracy of 1/100 of full scale. One analog channel was subcommutated in a 16-frame-long pattern and was used to telemeter spacecraft temperatures, power system voltages, currents, etc. A digital solar aspect sensor measured the spin period and phase, digitized to 0.041 seconds, and the angle between the spin axis and Sun direction to about 3° intervals.[1][2]

Experiments

There were eight experiments done on the Explorer 14 during its mission.[3]

  1. Proton Analyzer
  2. Fluxgate Magnetometers
  3. Trapped Particle Radiation
  4. Cosmic Rays
  5. Proton-Electron Scintillation Detector
  6. Solar Aspect Sensor
  7. Electrolytic Timer Experiment
  8. Solar Cell Damage Experiment

References

  1. ^ NASA:SP-4312 Dreams, Hopes, Realities-Chapter 1:Goddard's First Forty: The Quest to Learn This article incorporates text from this source, which is in the public domain.
  2. ^ NSSDC:Explorer 14 This article incorporates text from this source, which is in the public domain.
  3. ^ http://nssdc.gsfc.nasa.gov/nmc/experimentSearch.do?spacecraft=Explorer%2014 This article incorporates text from this source, which is in the public domain.

External links

  • NSSDC Explorer-14 data collections