Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained
Reexamination Certificate
2006-03-20
2008-08-12
Mansen, Michael R. (Department: 3644)
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and fluid sustained
C244S012400, C244S02300R
Reexamination Certificate
active
07410122
ABSTRACT:
A vertical takeoff and landing (“VTOL”) aircraft, e.g., an unmanned aerial vehicle (“UAV”), includes an elongated fuselage having a pair of forward swept wings and a pair of rearward swept canards, the outer tips of which are respectively joined with a respective tip end portion of one of the forward swept wings. The thrust outlet of a thrust-vectoring jet engine is disposed along the roll axis of the aircraft and aft of the pitch axis thereof, and a pair of downwardly exhausting ducted lift fans, e.g., tip turbine fans, are respectively disposed within a tip end portion of respective ones of the forward swept wings such that the fans are located symmetrically with respect to each other on opposite sides of the roll axis and forward of the pitch axis. The aircraft is capable of VTOL operations, including hovering, and is highly maneuverable at both very low and very high speeds.
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“Computer Program for Preliminary Design and Analysis of V/STOL Tip-Turbine Fans” Hilaer, Henry C., Seymour Lieblien and Bruce M. Auer, Feb. 1971, NASA TN D-6161 pp. 1-6.
Cassidy Patrick F.
Robbins Brent A.
MacPherson Kwok & Chen & Heid LLP
Mansen Michael R.
Sanderson Joseph W
The Boeing Company
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