Variable diameter tilt rotor aircraft

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Description

FIG. 1 is a top view of a variable diameter tilt rotor aircraft wherein the rotors thereof are oriented in a substantially horizontal plane for vertical take-off and landing flight;

FIG. 2 is a side view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 3 is a front view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 4 is a bottom view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 5 is an aft view of the variable diameter tilt rotor aircraft of FIG. 1;

FIG. 6 is a top view of a variable diameter tilt rotor aircraft wherein the rotors thereof are oriented in a substantially vertical plane for forward flight;

FIG. 7 is a side view of the variable diameter tilt rotor aircraft of FIG. 6;

FIG. 8 is a front view of the variable diameter tilt rotor aircraft of FIG. 6;

FIG. 9 is a bottom view of the variable diameter tilt rotor air craft of FIG. 6; and,

FIG. 10 is an aft view of the variable diameter tilt rotor aircraft of FIG. 6.

Referenced Cited
U.S. Patent Documents
D226826 May 1973 Wernicke
D323315 January 21, 1992 Haga
D332079 December 29, 1992 Haga et al.
5096140 March 17, 1992 Dornier, Jr.
5236149 August 17, 1993 MacKay
5352090 October 4, 1994 Churchill et al.
5381985 January 17, 1995 Wechsler et al.
Other references
  • American Helicopter Society, 49th Annual Forum, Variable Diameter Tilt rotor, by Studebaker & Matuska. 19-21 May 1993.
Patent History
Patent number: D401898
Type: Grant
Filed: Dec 23, 1996
Date of Patent: Dec 1, 1998
Assignee: Sikorsky Aircraft Corporation (Stratford, CT)
Inventors: Timothy F. Lauder (Oxford, CT), David G. Matuska (Huntington, CT)
Primary Examiner: Kay H. Chin
Attorney: Brian A. Collins
Application Number: 0/64,119