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Mylar Balloon



This satellite (AVL 802G), was a 2.13-m-diameter inflatable sphere constructed of wire mesh and a plastic skin. It was one of seven spherical research spacecraft ejected from OV1-21. The satellite was designed to gather aerodynamic data for use in the design and development of orbiting vehicles.

Alternate Names

  • 05401
  • AVL-802G
  • Grid Sphere Drag
  • MylarBalloon
  • SESP 70-2G

Facts in Brief

Launch Date: 1971-08-07
Launch Vehicle: Atlas
Launch Site: Vandenberg AFB, United States
Mass: 0.8 kg

Funding Agency

  • Department of Defense-Department of the Air Force (United States)


  • Engineering
  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mrs. Mary P. GauveyGeneral ContactUS Air Force Avionics Laboratory
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