Design

Landsat 4 Spacecraft Facts

  • Manufactured by GE Astro Space, Fairchild
  • Weight: approximately 1,941 kg
  • 3-axis stabilized, zero momentum with control of 0.01°, using reaction wheels
  • Single solar array with 1-axis articulation produces 1430 W
  • Two NiCd batteries provide 100 Ah total power
  • S-Band and Very High Frequency (VHF) communications
  • Hydrazine propulsion system

Landsat 5 Spacecraft Facts

  • 3-axis stabilized, zero momentum with control of 0.01° using reaction wheels
  • Aluminum with graphite struts
  • Hydrazine propulsion system
  • Single solar array with 1-axis articulation
  • Three Nickel Cadmium (NiCd) batteries provide 100 Ampere-Hour (AHr) total
  • Retractable boom (4 m long) with 2 powered joints supports the articulated High Gain Antenna, which downlinks data via Tracking and Data Relay Satellite System (TDRSS)
  • Communications system uses S,X,L, and Ku Bands
  • Weight: approximately 2,200 kg

Landsat Resources