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Ducted propeller aircraft

  • US 4,657,209 A
  • Filed: 03/18/1985
  • Issued: 04/14/1987
  • Est. Priority Date: 05/01/1979
  • Status: Expired due to Fees
First Claim
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1. A low-speed ground observation aircraft comprising:

  • i. a ducted propulsor thrust generator which comprises a prime mover, a propeller driven by the prime mover and an annular shroud including a mainplane support portion and a trailing portion within which the propeller rotates;

    ii. port and starboard wings mounted to the mainplane support portion of the shroud, said wings and shroud providing sufficient lift for flight of the aircraft; and

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