V/STOL biplane
First Claim
1. An aircraft capable of both conventional and vertical take off and landing (VTOL) flight comprising:
- a fuselage;
a set of canard wings mounted at or below the fuselage at the front of the aircraft;
two sets of wings, including a bottom wing and top wing mounted in biplane fashion, the bottom wing mounted so that the wing center of lift is located slightly ahead of the aircraft center of gravity, the top wing mounted so that the top wing center of lift is located slightly behind the aircraft center of gravity, and the bottom wing and top wing mounted so that the combined center of lift from the bottom wing and top wing is at the aircraft center of gravity;
an exbedded ducted fan mounted in a large circular opening in the center of said top wing wherein exbedded means the duct diameter extends beyond the outer edge of the fuselage at the center of the top wing, the exbedded ducted fan including a shroud having a ducted fan bellmouth and a rotor disposed in the shroud, said bottom wing having a central opening for the exhaust airstream from the ducted fan and said central opening extending rearward and being larger than the circular opening in the top wing;
a horizontal stabilizer mounted to the rear and above the top wing;
a central tailfin mounted above and behind the ducted fan bellmouth and supporting the horizontal stabilizer, said central tailfin mounted on top of the rear third of the fuselage to form a “
T”
tail with the horizontal stabilizer; and
a first rudder mounted in the central tailfin.
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Accused Products
Abstract
The present invention is a 2 passenger aircraft capable of vertical and conventional takeoffs and landings, called a jyrodyne. The jyrodyne comprises a central fuselage with biplane-type wings arranged in a negative stagger arrangement, a horizontal ducted fan inlet shroud located at the center of gravity in the top biplane wing, a rotor mounted in the shroud, outrigger wing support landing gear, a forward mounted canard wing and passenger compartment, a multiple vane-type air deflector system for control and stability in VTOL mode, a separate tractor propulsion system for forward flight, and a full-span T-tail. Wingtip extensions on the two main wings extend aft to attach to the T-tail. The powerplants consist of two four cylinder two-stroke reciprocating internal combustion engines. Power from the engines is distributed between the ducted fan and tractor propeller through the use of a drivetrain incorporating two pneumatic clutches, controlled by an automotive style footpedal to the left of the rudder pedals. When depressed, power is transmitted to the ducted fan for vertical lift. When released, power is transmitted to the tractor propeller for forward flight. The aircraft can also takeoff and land in the conventional manner with a much larger payload, and is easily converted to amphibious usage. Landing gear is a bicycle arrangement with outriggers. The aircraft combines twin engines, heavy-duty landing gear, controlled-collapse crashworthy seats with a low stall speed and high resistance to stalls to eliminate any region of the flight regime where an engine or drivetrain failure could cause an uncontrollable crash.
68 Citations
32 Claims
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1. An aircraft capable of both conventional and vertical take off and landing (VTOL) flight comprising:
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a fuselage; a set of canard wings mounted at or below the fuselage at the front of the aircraft; two sets of wings, including a bottom wing and top wing mounted in biplane fashion, the bottom wing mounted so that the wing center of lift is located slightly ahead of the aircraft center of gravity, the top wing mounted so that the top wing center of lift is located slightly behind the aircraft center of gravity, and the bottom wing and top wing mounted so that the combined center of lift from the bottom wing and top wing is at the aircraft center of gravity; an exbedded ducted fan mounted in a large circular opening in the center of said top wing wherein exbedded means the duct diameter extends beyond the outer edge of the fuselage at the center of the top wing, the exbedded ducted fan including a shroud having a ducted fan bellmouth and a rotor disposed in the shroud, said bottom wing having a central opening for the exhaust airstream from the ducted fan and said central opening extending rearward and being larger than the circular opening in the top wing; a horizontal stabilizer mounted to the rear and above the top wing; a central tailfin mounted above and behind the ducted fan bellmouth and supporting the horizontal stabilizer, said central tailfin mounted on top of the rear third of the fuselage to form a “
T”
tail with the horizontal stabilizer; anda first rudder mounted in the central tailfin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification