Momentum Wheel, Applications Technology Satellite 6 (ATS 6)


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

Launched in 1974, Applications Satellite Technology 6 (ATS 6) was the last of a series of NASA experimental satellites designed to test new communications, meteorological, and other technologies. The spacecraft used three-axis stabilization to maintain a constant orientation toward Earth, especially important for ATS 6's principal mission of communications.

These momentum wheels (two of three on the spacecraft) helped ATS 6 maintain this stabilization.

These artifacts are flight spares, which NASA transferred to the Museum in 1978.

Collection Item Long Description:

Data Source

National Air and Space Museum

Restrictions & Rights

Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Credit Line

Transferred from NASA


  • Magnesium
  • Paint
  • Cadmium Plating
  • Steel
  • Non-magnetic Metal
  • Copper Alloy
  • Plastic
  • Adhesive
  • Glass


  • Approximate: 35.6 × 33 × 10.2cm (14 × 13 × 4 in.)
  • Storage: 48.3 × 48.3 × 29.5cm (19 × 19 × 11 5/8 in.)

Country of Origin

United States of America


SPACECRAFT-Unmanned-Guidance & Control

Inventory Number


Related Topics