Trim augmentation system for a rotary wing aircraft
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/57
출원번호
US-0016520
(2001-12-10)
발명자
/ 주소
Gold, Phillip Jeremy
Dryfoos, James B.
Brewer, Roy
출원인 / 주소
Sikorsky Aircraft Corporation
대리인 / 주소
Carlson, Gaskey & Olds
인용정보
피인용 횟수 :
12인용 특허 :
24
초록▼
The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present inve
The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present invention, when the aircraft is lagging the pilots commanded maneuver state the stick command is multiplied by a gain to direct the actual vehicle response toward said pilot commanded rate signal and improve the model following control laws. In a second function of the present invention, a cross-axis trim transfer function of the trim augmentation algorithm uses the commanded yaw rate to anticipate the trim change when the aircraft is rotating in winds. When a yaw maneuver is performed, the cross-axis trim transfer function automatically "stirs" the cyclic as the aircraft rotates about the yaw axis.
대표청구항▼
The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present inve
The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present invention, when the aircraft is lagging the pilots commanded maneuver state the stick command is multiplied by a gain to direct the actual vehicle response toward said pilot commanded rate signal and improve the model following control laws. In a second function of the present invention, a cross-axis trim transfer function of the trim augmentation algorithm uses the commanded yaw rate to anticipate the trim change when the aircraft is rotating in winds. When a yaw maneuver is performed, the cross-axis trim transfer function automatically "stirs" the cyclic as the aircraft rotates about the yaw axis. coupled to said button portion of said push-button actuator whereby said seal member is normally biased into sealing engagement with said inlet by said biasing portion of said push-button actuator, said seal member movable out of sealing engagement with said inlet when said button portion of said push-button actuator is moved to said second, operative position. 2. The faucet as set forth in claim 1, wherein said biasing portion of said push-button actuator and said outlet passageway cooperate to define a liquid-flow passage that communicates with said outlet of said body. 3. The faucet as set forth in claim 1, wherein said stem and said seal member are defined together as a one-piece construction. 4. A faucet comprising: a body comprising: (i) an inlet passageway including an inlet; and, (ii) an outlet passageway that intersects the inlet passageway, said outlet passageway including an outlet; a push-button actuator comprising: (i) a biasing portion located in said outlet passageway; and, (ii) a button portion that projects outwardly through an opening defined in said body, said button portion normally biased into a first, extended position by said biasing portion and selectively manually movable to a second, operative position; a seal member adapted to engage and seal said inlet; a stem projecting from said seal member and operably coupled to said button portion of said push-button actuator so that said seal member is normally biased into sealing engagement with said inlet by said biasing portion of said push-button actuator, said seal member movable out of sealing engagement with said inlet when said button portion of said push-button actuator is moved to said second, operative position; wherein: said biasing portion of said push-button actuator and said outlet passageway cooperate to define a liquid-flow passage that communicates with said outlet of said body; and, said body defines a port at an intersection of said outlet passageway and said inlet passageway, and wherein said biasing portion of said push-button actuator comprises first and second legs that contact said body on opposite sides of said port. 5. The faucet as set forth in claim 4, wherein said stem extends through said inlet passageway and said port. 6. The faucet as set forth in claim 5, wherein said first and second legs define said biasing portion of said push-button actuator to be arcuate in shape. 7. A faucet comprising: a body comprising: (i) an inlet passageway including an inlet; and, (ii) an outlet passageway that intersects the inlet passageway, said outlet passageway comprising an outlet; a push-button actuator comprising: (i) a biasing portion located in said outlet passageway; and, (ii) a button portion that projects outwardly through an opening defined in said body, said button portion normally biased into a first, extended position by said biasing portion and selectively manually movable to a second, operative position, wherein said button portion and said biasing portion of said push-button actuator are defined together as a one-piece construction; a seal member adapted to engage and seal said inlet; a stem projecting from said seal member and operably coupled to said button portion of said push-button actuator so that said seal member is normally biased into sealing engagement with said inlet by said biasing portion of said push-button actuator, said seal member movable out of sealing engagement with said inlet when said button portion of said push-button actuator is moved to said second, operative position. 8. A faucet comprising: a body comprising an inlet, an inlet passageway extending from said inlet, an outlet, and an outlet passageway extending from said outlet and connecting with said inlet passageway; a seal adapted for engaging and sealing said inlet; a stem connected to said seal and projecting into said inlet passageway; an actuator comprising a first portion that projects outwardly from said body and a
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이 특허에 인용된 특허 (24)
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.
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.
Adams Don L. (Fairfield CT) Wright Stuart C. (Milford CT) Fischer William C. (Monroe CT) Verzella David J. (Guilford CT), Heading reference trim system.
Tefft Franklin A. (Killingworth CT) Perez Ricardo L. (Plantsville CT) Barnum Ronald E. (Trumbull CT), Helicopter hover stability and cruise gust effect alleviation.
Fowler Donald W. (Oxford CT) Lappos Nicholas D. (Milford CT) Edwards Joan A. (Fairfield CT), Helicopter integrated fire and flight control having a pre-launch and post-launch maneuver director.
Fowler Donald W. (Oxford CT) Lappos Nicholas D. (Milford CT) Dryfoos James B. (Wallingford PA) Keller James F. (Media PA), Helicopter integrated fire and flight control having azimuth and pitch control.
Skonieczny Joseph P. (Madison CT) Fogler ; Jr. Donald L. (Milford CT) Gold Phillip J. (Shelton CT) Keller James F. (Media PA) Dryfoos James B. (Wallingford PA), High speed turn coordination for rotary wing aircraft.
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.
Gold Phillip J. (Shelton CT) Fogler ; Jr. Donald L. (Milford CT) Skonieczny Joseph (Madison CT) Keller James F. (Media PA), Turn coordination inhibit for rotary wing aircraft control system.
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