@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/f4c1befd-8eae-4cc0-b7ce-1a5306f79fa8>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """The RAE-1 spacecraft measured the intensity of celestial radio sources,
particularly the sun, as a function of time, direction, and frequency (0.2 to
20 MHz). The spacecraft was gravity gradient oriented. The spacecraft weight
was 193 kg, and average power consumption was 25 W. It carried two 750-ft-long
V-antennas, one facing toward the earth and one facing away from the earth. A
120-ft-long dipole antenna was oriented tangentially with respect to the
earth's surface. The spacecraft was also equipped with one 136-MHz telemetry
turnstile. The onboard experiments consisted of four step-frequency
Ryle-Vonberg radiometers operating from 0.45 to 9.18 MHz, two multichannel
total power radiometers operating from 0.2 to 5.4 MHz, one step frequency
V-antenna impedance probe operating from 0.24 to 7.86 MHz, and one dipole
antenna capacitance probe operating from 0.25 to 2.2 MHz. RAE-1 was designed
for a 1-year minimum operating lifetime. The spaecraft tape recorder
performance began to deteriorate after 2 months in orbit. In spite of several
cases of instrument malfunction, good data were obtained on all three antenna
systems. For more details, see R. R. Weber, J. K. Alexander, and R. G. Stone,
Radio Sci., v. 6, p. 1085, 1971.
                  - Auxiliary Information -
    Launch Date and Time :  1968-07-04 17:31:00
    Epoch Date and Time  :  1968-07-07
    Apogee (km or AU):      5861.
    Perigee (km or AU):     5851.
    Inclination (degree) :  120.6
    Orbit Type :            Geocentric
    Information last updated on 1992-03-09


Group: Platform_Details
   Entry_ID: RAE-A
   Group: Platform_Identification
      Platform_Category: Solar/Space Observation Satellites
      Platform_Series_or_Entity: RAE (Radio Astronomy Explorer)
      Short_Name: RAE-A
      Long_Name: Radio Astronomy Explorer-A
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: Explorer 38
   End_Group
   Group: Orbit
      Orbit_Inclination: 120.6
      Perigee: 5851
      Apogee: 5861
   End_Group
   Creation_Date: 2008-01-02
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1968-055A
   Sample_Image: http://www.astronautix.com/graphics/r/rae.jpg
   Group: Platform_Logistics
      Launch_Date: 1968-07-04
      Launch_Site: Vandenberg Air Force Base, USA
      Primary_Sponsor: NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "RAE-A"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/c381eef8-a0be-407e-b85b-67757d724af8> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/c381eef8-a0be-407e-b85b-67757d724af8>
  skos:prefLabel "RAE (Radio Astronomy Explorer)"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/f4c1befd-8eae-4cc0-b7ce-1a5306f79fa8> .