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VTOL AIRCRAFT WITH CRUCIFORM ROTOR WING

  • US 3,792,827 A
  • Filed: 11/10/1972
  • Issued: 02/19/1974
  • Est. Priority Date: 11/10/1972
  • Status: Expired due to Term
First Claim
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1. An aircraft, comprising:

  • an airframe having aerodynamic control surfaces thereon;

    a wing mounted above said airframe for rotation about a substantially vertical axis;

    said wing having a center body and four radially extending airfoil sectioned arms in cruciform configuration, each arm having a tip portion pivotally attached thereto for pitch change motion about a substantially radial axis;

    control means coupled to said tip portions for pitch change actuation thereof;

    means for locking the wing with two of said arms extending longitudinally over the airframe and the remaining two arms fixed transverse to the airframe for maintaining horizontal cruising flight;

    a power source of compressed gases in said airframe and having a rearwardly opening tailpipe extending therefrom;

    a pair of nozzles mounted below said two longitudinally extending arms inboard of the tip portions, said nozzles being oppositely directed substantially chordwise of the arms;

    a branch duct connecting said tailpipe to said nozzles; and

    a diverter valve at the junction of said tailpipe and branch duct, for directing gases selectively to said tailpipe and nozzles.

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