Biosensors, Sternal Harness, Apollo 11


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:

This bio-harness was flown aboard Apollo 11 in July 1969, but never used. There is no notation as to which astronaut it was assigned. The bio-harness assembly was worn under either the intra-vehicular (IV) or extra-vehicular (EV) pressure suit.

The complete assembly consisted of a cotton duck belt fitted with snap fastners and teflon-coated beta cloth pockets, which attached the assembly to either the constant wear garment or the liquid cooling garment. The components consisted of an electrocardiograph signal conditioner, an impedance pneumograph signal conditioner, and a DC-DC converter. These instruments monitored the physiological functions of the astronaut.

NASA transferred these sensors to the Museum in 1970.

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/JSC


  • Plastic
  • Rubber
  • Aluminum
  • Silver
  • Paper
  • Ink
  • Package: Polyethelyne
  • Contents Overall: Metal, plastic, rubber insulation


Overall: 9.5 x 9.5 x 1cm (3 3/4 x 3 3/4 x 3/8 in.)

Country of Origin

United States of America



Inventory Number