Method for determining the air speed of a helicopter, system for carrying on this method and method for calibrating such
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-011/34
G06F-015/329
출원번호
US-0063534
(1987-06-18)
우선권정보
FR-0004258 (1987-03-26)
발명자
/ 주소
Mandle Jacques (Granges les Valence FRX) Goudon Jean-Claude (Chabeuil FRX)
출원인 / 주소
Crouzet - A French “Societe Anonyme” (Paris FRX 03)
인용정보
피인용 횟수 :
23인용 특허 :
7
초록▼
The air speed is determined by solving the equation Vx,y=k1(Px,y-qx,y)+k7P2x,y+k8Px,yPz+k4Py,x+ k5qy,x+k2Pz+k9gz+k3Po+k6Po2+k10, in which Pz is the pitch of the antitorque device, gz, the vertical acceleration of the helicopter, k1-k10, parameters depending on the type of helicopter, px,y, the longi
The air speed is determined by solving the equation Vx,y=k1(Px,y-qx,y)+k7P2x,y+k8Px,yPz+k4Py,x+ k5qy,x+k2Pz+k9gz+k3Po+k6Po2+k10, in which Pz is the pitch of the antitorque device, gz, the vertical acceleration of the helicopter, k1-k10, parameters depending on the type of helicopter, px,y, the longitudinal or transverse cyclic pitch, po the collective pitch of the main rotor, qx,y the angle of bank of the helicopter about the transverse or longitudinal axis of the helicopter. The system for determining the air speed may also include a conventional anemometer for hybridization with the computed speed. The parameters k1-k10 are determined by self-calibration and by assuring that the variations of the ground speed and of the air speed are the same from one flight configuration to another one of a pair of flight configurations, among a series of pairs, for which the sensiting parameters of the helicopter are measured in the earth\s reference by means of an airborne ground speed reference.
대표청구항▼
A method for determining the air speed of a helicopter having a main lift rotor and an antitorque device, with a longitudinal axis OX, a transverse axis OY and an axis of the hub of the rotor OZ, a swash plate being provided for varying the longitudinal cyclic pitch Px, the transverse cyclic pitch P
A method for determining the air speed of a helicopter having a main lift rotor and an antitorque device, with a longitudinal axis OX, a transverse axis OY and an axis of the hub of the rotor OZ, a swash plate being provided for varying the longitudinal cyclic pitch Px, the transverse cyclic pitch Py and the collective pitch Po of the main rotor, in which method the two components Vx and Vy of said speed are measured along the axes OX and OY, respectively, as a function of the difference between the cyclic pitch (Px, Py) along the axis considered (OX, OY) and the angle of bank (qqVx=k1(Px-qx)+k7Px2+K8PxPz+k4Py+k5qy+ k2Pz+k9gz+k3Po+k6Po2+k10 Vy=k′1(Py-qy)+k′7Px2+k′8PxPz+k′4Px+k′5qx+ k′2Pz+k′9Pxqy+k′3Po+ k′6Po2+k′10 in which Pz is the pitch of the antitorque device, gz is the vertical acceleration of the helicopter along the axes OZ, k1-k10 and k′1-k′10 are parameters, fixed or variable, depending on the type of helicopter and determined by calibration, and once Vx and Vy are determined, deducing the air speed of the helicopter therefrom and using same for piloting the helicopter.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (7)
Adams Don L. (Fairfield CT) Fischer William C. (Monroe CT) Wright Stuart C. (Milford CT) Verzella David J. (Guilford CT), Attitude trimmed airspeed/attitude controls.
Gerstine Milton I. (Wilmington DE) Goldberg Joshua I. (Ridgefield CT) Futatsugi Setsuo (Kogamigahara JA) Ueda Kazuo (Kogamigahara JA) Seo Ryozo (Kogamigahara JA) Iwasaki Koji (Kogamigahara JA) Uemura, Automatic flight control means for rotary wing aircraft having attitude-air speed control.
Goupil, Philippe; Cazes, Florian; Dayre, Rémy; Le Berre, Hervé; Mailhes, Corinne; Chabert, Marie; Michel, Patrice, Automatic estimation process and device for a flight parameter vector in an aircraft, as well as detection methods and assemblies for a failure affecting such a vector.
Gardes, Jerome; Pinacho, Jean-Paul; Gaulene, Philippe, Procedure and device for the determination of airspeeds of a rotorcraft in stationary flight and/or at low speeds.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.