Stopped rotor aircraft utilizing a flipped airfoil X-wing
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/24
B64C-011/06
B64C-011/32
출원번호
US-0001739
(1993-01-04)
발명자
/ 주소
Pande John B. (11859 Casper Rd. Sandy UT 84092)
인용정보
피인용 횟수 :
8인용 특허 :
0
초록▼
This invention is directed to stopped rotor Flipped Airfoil X-wing (FAX-WINGTM) aircraft which comprises: (a) A rotary wing flight mode which operates similar to a helicopter, wherein all main rotor airfoils rotate with leading edges into the oncoming airstream (neglecting forward motion) to provide
This invention is directed to stopped rotor Flipped Airfoil X-wing (FAX-WINGTM) aircraft which comprises: (a) A rotary wing flight mode which operates similar to a helicopter, wherein all main rotor airfoils rotate with leading edges into the oncoming airstream (neglecting forward motion) to provide lift, and utilize an anti-torque rotor to cancel main rotor torque. The fixed wing flight mode, including supersonic flight, utilizes all stationary main rotor airfoils for primary lift, such that all airfoil leading edges are positioned forward, meeting the oncoming airstream generated by forward aircraft motion. Two airfoils are forward swept 45 degrees, and the other two airfoils are aft swept 45 degrees. The transition mode for converting from rotary wing to fixed wing flight, and vise-versa, causes two adjacent airfoils to flip 180 degrees (in approximately 1/16 second) about their pitch axis, such that all airfoils have leading edges in the correct orientation for a particular flight mode. (b) Rotating flywheel inertia mass(es) capable of being coupled to the main rotor airfoils, via a flywheel clutch, for the purpose of rapidly starting or stopping airfoil angular rotation (in approximately 1 second) without applying adverse torque to the aircraft fuselage, and a spin up/spin down mechanism for applying angular momentum to the flywheel inertia mass(es) at gradual rates such that the anti-torque rotor and/or rudder can cancel torque. (c) Computer based flight control system capable of directing rotary wing, fixed wing, and transition therebetween. (d) Variable pitch ducted fan to provide forward thrust, coupled to common turboshaft engine(s), that also provide power to the main rotor.
대표청구항▼
A stopped rotor aircraft capable of fixed wing flight, rotary wing flight, and the ability to transition therebetween said flight modes, from fixed wing flight to rotary wing flight, as well as rotary wing flight to fixed wing flight, in a controlled manner, wherein the improvement comprises: (a) on
A stopped rotor aircraft capable of fixed wing flight, rotary wing flight, and the ability to transition therebetween said flight modes, from fixed wing flight to rotary wing flight, as well as rotary wing flight to fixed wing flight, in a controlled manner, wherein the improvement comprises: (a) one or more flywheel masses, having their rotational axis parallel to the main rotor airfoils axis of rotation, (b) one or more flywheel spin up/spin down mechanisms, (c) one or more flywheel clutches, (d) means of coupling said flywheel mass to said flywheel spin up/spin down mechanism, allowing the spin up/spin down mechanism to impart angular momentum to the flywheel mass, and a means of coupling the flywheel mass to the main rotor airfoils, to effect spinup or spindown of the main rotor airfoils in approximately one second, via a means of one or more flywheel clutches.
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