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OV4-1R was launched along with OV4-3 and OV4-1T by the US Air Force from Cape Canaveral aboard the same Titan 3C rocket. It conducted "Whispering gallery" experiments along with the Gemini 2 reentry module reused to test reentry with hatch cut into heat shield. When recovered, it was discovered that reentry actually melted the hatch shut, indicating the design was valid for MOL (Manned Orbiting Laboratory), which was the USAF's manned space project after Dynasoar was cancelled, until it was concelled in 1969. MOLs planned experiments ranged the gamut from military reconnaisance using large optical cameras and side-looking radar, through interception and inspection of satellites, to exploring the usefullness of man in space and test of the manned maneuvering units. After cancellation, some of the reconnaisance systems ended up in later KH series satellites, and some of the manned experiments were accomplished on Skylab.

Alternate Names

  • 02526

Facts in Brief

Launch Date: 1966-11-02
Launch Vehicle: Titan III-C
Launch Site: Cape Canaveral, United States
Mass: 136 kg

Funding Agency

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


  • Engineering

Additional Information

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

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