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Flight training hood

  • US 4,021,935 A
  • Filed: 02/20/1976
  • Issued: 05/10/1977
  • Est. Priority Date: 02/20/1976
  • Status: Expired due to Term
First Claim
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1. A flight training hood for limiting the vision of a pilot to the instrument control panel of his aircraft, comprising:

  • hood means;

    bistable, voltage controlled, lens means suitably secured to said hood means in a transverse relationship with respect to the line of sight of a wearer thereof, said lens means having a first state of transparency permitting the wearer to visually communicate therethrough, and operable to a second state of opacity for affecting visual communication;

    light receiving transducer means operatively associated with the movement of said hood means for monitoring light from a predetermined area of space with respect to said hood means;

    means for channeling light to said light receiving means, for restricting the reception of light by said light receiving means to directional light reception and for receiving directional light from an area of space lying substantially along a predetermined line of sight of the wearer;

    electrical circuitry means cooperable with said light receiving means for voltage controlling said lens means, said circuitry means including means for providing a reference level corresponding to substantially the light intensity coming from the control panel of the aircraft and said circuitry means actuating said lens means to said second state responsive to a light intensity monitored by said light receiving means greater than said light intensity corresponded by said reference level, said lens means remaining in said first state with monitored light intensities below or equal to said light intensity corresponded by said reference level.

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