[특허]Earth-referenced wind adjustment for hovering aircraft

[미국특허] Earth-referenced wind adjustment for hovering aircraft 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-017/00
출원번호	US-0069320 (1998-04-29)
발명자 / 주소	Thornberg Christopher A. Cotton Bryan S.
출원인 / 주소	Sikorsky Aircraft Corporation
대리인 / 주소	Williams
인용정보	피인용 횟수 : 8 인용 특허 : 11

초록 ▼

In a rotary wing aircraft, longitudinal groundspeed error and lateral groundspeed error are converted to earth coordinates, and the result scaled and integrated, and retransformed into aircraft coordinates for application to a pitch attitude control system and a roll attitude control system. The invention thus instantly transfers wind trim between the longitudinal and lateral channels, whenever a heading change is undertaken.

대표청구항 ▼

[ We claim:] [1.] A method of providing attitude wind adjustment in an aircraft, comprising:providing, in aircraft coordinates, a longitudinal groundspeed command signal indicative of a commanded longitudinal groundspeed;providing, in aircraft coordinates, a sensed longitudinal groundspeed signal indicative of actual longitudinal groundspeed of the aircraft;providing, in aircraft coordinates, a lateral groundspeed command signal indicative of a commanded lateral groundspeed;providing, in aircraft coordinates, a sensed lateral groundspeed signal indicative of actual lateral groundspeed of the aircraft;providing a longitudinal groundspeed error signal having a magnitude indicative of the difference between the speed indicated by said longitudinal groundspeed command signal and the speed indicated by said sensed longitudinal groundspeed signal;providing a lateral groundspeed error signal indicative of the difference between the groundspeed indicated by said lateral groundspeed command signal and the speed indicated by said sensed lateral groundspeed signal;providing a true heading signal indicative of the true heading of the aircraft in earth coordinates;providing, in earth coordinates, a north velocity error signal equal to: (a) the magnitude of said longitudinal groundspeed error signal times the cosine of the heading indicated by said true heading signal, minus (b) the magnitude of said lateral groundspeed error signal times the sine of the heading indicated by said true heading signal;providing, in earth coordinates, an east velocity error signal equal to: (c) the magnitude of said longitudinal groundspeed error signal times the sine of the heading indicated by said true heading signal, plus (d) the magnitude of said lateral groundspeed error signal times the cosine of the heading indicated by said true heading signal;scaling and integrating said north velocity error signal and said east velocity error signal to provide, respectively, a north attitude wind adjustment signal and an east attitude wind adjustment signal each with a corresponding magnitude;providing, in aircraft coordinates, a pitch attitude wind adjustment signal equal to: (e) the negative of the magnitude of said north attitude wind adjustment signal times the cosine of the heading indicated by said true heading signal, summed with (f) the negative of the magnitude of said east attitude wind adjustment signal times the sine of the heading indicated by said true heading signal; andproviding, in aircraft coordinates, a roll attitude wind adjustment signal equal to: (g) the magnitude of said east attitude wind adjustment signal times the cosine of the heading indicated by said true aircraft heading signal minus (h) the magnitude of said north attitude wind adjustment signal times the sine of the heading indicated by said true heading signal.

이 특허에 인용된 특허 (11) 인용/피인용 타임라인 분석

Graupp Frederick G. (Bellevue WA) van Leynseele Francis J. (Edmonds WA), Apparatus for determining the groundspeed rate of an aircraft.
상세보기
Wright Stuart C. (Woodbridge CT) Skonieczny Joseph P. (Madison CT) Gold Phillip J. (Shelton CT) Dryfoos James B. (Wallingford PA), Attitude synchronization for model following control systems.
상세보기
Gold Phillip J. (Shelton CT) Lappos Nicholas D. (Milford CT) Adams Don L. (Fairfield CT) Wright Stuart C. (Woodbridge CT), Automatic turn coordination trim control for rotary wing aircraft.
상세보기
Favre Helene (Massy FRX) Audren Jean T. (Orsay FRX), Autonomous kinematic measurement system for helicopters.
상세보기
Gold Phillip J. (Shelton CT) Post Joseph A. (Burke VA), Hover position hold system for rotary winged aircraft.
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Fogler ; Jr. Donald L. (Milford) Richard James L. (Stratford) Gold Phillip J. (Shelton CT) Glusman Steven L. (Springfield PA), Low speed model following velocity command system for rotary wing aircraft.
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Gold Phillip J. (Shelton CT) Faull Walter R. (Bethlehem CT), Low speed turn coordination for rotary wing aircraft.
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Gold Phillip J. (Shelton CT) Wright Stuart C. (Woodbridge CT), Maneuver feel system for a rotary wing aircraft.
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Mandle Jacques (Granges les Valence FRX) Goudon Jean-Claude (Chabeuil FRX), Method for determining the air speed of a helicopter, system for carrying on this method and method for calibrating such.
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Pressiat Robert (Paris FRX), System for controlling ground movements on airfields.
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Lambregts, Antonius A., Total energy based flight control system.
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이 특허를 인용한 특허 (8) 인용/피인용 타임라인 분석

Cherepinsky, Igor, Automatic trim system for fly-by-wire aircraft with unique trim controllers.
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Rios, Jeffrey P., Control system for remotely operated vehicles for operational payload employment.
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Christensen, Kevin Thomas; Shue, Shyhpyng Jack; Caudill, Troy Sheldon, Flight control laws for vertical flight path.
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Doeppner, Ronald S.; Fowler, Donald W.; Lee, Stephen P.; Hoang, Lan; Mehra, Anil, Module for integrated approach to an offshore facility.
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Stuckman, Katherine C.; Reynolds, Michael D., Radio controlled aircraft, remote controller and methods for use therewith.
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Stuckman, Katherine C.; Reynolds, Michael D., Radio controlled aircraft, remote controller and methods for use therewith.
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Arbuckle, Jason S.; Snyder, Matthew W.; Kirchhoff, Thomas S., Systems and methods for determining a heading value of a marine vessel.
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Gold, Phillip Jeremy; Dryfoos, James B.; Brewer, Roy, Trim augmentation system for a rotary wing aircraft.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Earth-referenced wind adjustment for hovering aircraft 원문보기