Method and system for engaging hovering flight for a rotary wing aircraft, enabling it to maintain either track or heading depending on its forward speed
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-013/18
G05D-001/08
G05D-001/10
B64C-027/04
G05D-001/02
출원번호
US-0750739
(2015-06-25)
등록번호
US-9573675
(2017-02-21)
우선권정보
FR-14 01479 (2014-06-30)
발명자
/ 주소
Salesse-Lavergne, Marc
출원인 / 주소
AIRBUS HELICOPTERS
대리인 / 주소
Brooks Kushman P.C.
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A method and a system for engaging hovering flight for a rotary wing aircraft. A first mode of operation makes it possible, while the longitudinal speed UX of the aircraft is greater than a first threshold speed Vthresh1 to approach a stop position S while maintaining track relative to the ground, t
A method and a system for engaging hovering flight for a rotary wing aircraft. A first mode of operation makes it possible, while the longitudinal speed UX of the aircraft is greater than a first threshold speed Vthresh1 to approach a stop position S while maintaining track relative to the ground, the flight setpoints of an autopilot being a ground course angle TKsol, a deceleration rate Ga for the forward speed Va of the aircraft, a flight path angle P, and a heading Ψ. A second mode of operation makes it possible, when the longitudinal speed UX is less than a second threshold speed Vthresh2, to engage hovering flight at the stop position S while maintaining heading, the flight setpoints being the longitudinal speed UX, a lateral speed VY, a vertical speed WZ, and the heading Ψ, the speeds UX, VY, and WZ being reduced progressively to zero speed.
대표청구항▼
1. A method for engaging hovering flight for a rotary wing aircraft, the aircraft following a track Tsol relative to the ground with a forward speed Va, a longitudinal direction X extending from the rear of the aircraft to the front of the aircraft, an elevation direction Z extending upwards perpend
1. A method for engaging hovering flight for a rotary wing aircraft, the aircraft following a track Tsol relative to the ground with a forward speed Va, a longitudinal direction X extending from the rear of the aircraft to the front of the aircraft, an elevation direction Z extending upwards perpendicularly to the longitudinal direction X, and a transverse direction Y extending from left to right perpendicularly to the longitudinal and elevation directions X and Z, the aircraft comprising: at least one rotary wing having a plurality of main blades of collective pitch and cyclic pitch that are variable about respective pitch axes, the aircraft being capable of performing movements in rotation about the directions X, Y, Z and of performing movements in translation along the directions X, Y, Z;an autopilot that generates control signals in predefined modes of operations and in application of flight setpoints, the control signals being capable of causing the aircraft to perform the movements in rotation and/or in translation relative to the directions X, Y, Z; andflight controls having at least one control member provided jointly with a plurality of movement axes A, B, C, D;the method comprising the following steps:applying a first mode of operation of the control members and of the autopilot when a longitudinal speed UX of the aircraft is greater than a first threshold speed Vthresh1, the longitudinal speed UX being a projection of the forward speed Va onto the longitudinal direction X, the autopilot then enabling the aircraft to approach a determined stop position S when the method is being applied while maintaining track, the flight setpoints of the autopilot being a ground course angle TKsol, a deceleration rate Ga of the forward speed Va, a flight path angle P, and a heading Ψ; andapplying a second mode of operation for the control members and the autopilot when the longitudinal speed UX is less than a second threshold speed Vthresh2, the first threshold speed Vthresh1 being greater than the second threshold speed Vthresh2, the autopilot then enabling the aircraft to engage hovering flight while maintaining heading towards this stop position S, the flight setpoints of the autopilot being the longitudinal speed UX, a lateral speed VY and a vertical speed WZ, and a heading Ψ, each of the longitudinal, lateral, and vertical speeds UX, VY, WZ varying towards zero speed. 2. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein: the first mode of operation of the control members and of the autopilot remains engaged so long as the longitudinal speed UX is greater than or equal to the second threshold speed Vthresh2; andthe second mode of operation of the control members and of the autopilot remains engaged so long as the longitudinal speed UX is less than or equal to the first threshold speed Vthresh1. 3. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein during the first mode of operation of the control members and of the autopilot: it is possible, independently and by transparency for the purpose of defining a new stop position Sn of the aircraft, to cause a modification of: the deceleration rate Ga for the forward speed Va by taking a first action on a first movement axis A of a control member and by means of the autopilot generating a shift of the stop position S on the track Tsol;the ground course angle TKsol by taking a second action on a second movement axis B of a control member and by means of the autopilot generating a shift of the stop position S in a horizontal plane; and/orthe flight path angle P by taking a third action on a third movement axis C of a control member and by means of the autopilot generating a modification in the altitude of the stop position S; andto synchronize the flight setpoints of the autopilot so as to approach the new stop position Sn while maintaining track, the flight setpoints including amongst others a new ground course angle TKsoln, a new deceleration rate Gan for the forward speed Va, a new flight path angle Pn, and/or a new heading Ψn. 4. A method according to claim 3 for engaging hovering flight for a rotary wing aircraft, wherein during the first mode of operation of the control members and of the autopilot: it is possible, by transparency, to cause a modification of the ground course angle TKsol by taking a fourth action on a fourth movement axis D of a control member and by means of the autopilot generating a movement of the stop position S in a horizontal plane in order to define a new stop position Sn without modifying the deceleration rate Ga for the forward speed Va and the flight path angle P; andto synchronize the flight setpoints of the autopilot are synchronized in order to approach the new stop position Sn while maintaining track, the flight setpoints including amongst others a new ground course angle TKsoln. 5. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein during the first mode of operation of the control members and of the autopilot, the deceleration rate Ga for the forward speed Va lies in a predefined range. 6. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein if the forward speed Va is less than a third threshold speed Vthresh3, the flight path angle P is replaced by the vertical speed WZ as the flight setpoint for the autopilot during the first mode of operation of the control members and of the autopilot. 7. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein during the second mode of operation of the control members and of the autopilot: it is possible, independently and by transparency for the purpose of defining a new stop position Sn of the aircraft, to cause a modification of: the longitudinal speed UX by taking a first action on a first movement axis A of a control member and by means of the autopilot generating a longitudinal shift of the stop position S;the lateral speed VY by taking a second action on a second movement axis B of a control member and by means of the autopilot generating a lateral shift of the stop position S; and/orthe vertical speed WZ by taking a third action on a third movement axis C of a control member and by means of the autopilot generating a vertical shift of the stop position S; andto synchronize the flight setpoints of the autopilot in order to engage hovering flight towards the new stop position Sn while maintaining heading, the flight setpoints including amongst other things a new longitudinal speed UXn, a lateral speed VY, and/or a vertical speed WZ decreasing towards a value zero. 8. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein during the second mode of operation of the control members and of the autopilot: it is possible, independently and by transparency for the purpose of defining a new stop position Sn of the aircraft, to cause a modification of: a longitudinal shift of the stop position S by a first action on a first movement axis A of a control member and by means of the autopilot;a lateral shift of the stop position S by a second action on a second movement axis B of a control member and by means of the autopilot; and/ora vertical shift of the stop position S by a third action on a third movement axis C of a control member and by means of the autopilot; andto synchronize the flight setpoints of the autopilot in order to engage hovering flight towards the new stop position Sn while maintaining heading, the flight setpoints including amongst other things a new longitudinal speed UXn, a lateral speed VY, and/or a vertical speed WZ decreasing towards a value zero. 9. A method according to claim 7 for engaging hovering flight for a rotary wing aircraft, wherein during the second mode of operation of the control members and of the autopilot: it is possible, by transparency, to cause a change of heading Ψ by a fourth action on a fourth movement axis D of a control member and by means of the autopilot independently of the speeds UX, VY, WZ, and possibly leading to a shift of the stop position S; andto synchronize the flight autopilots of the autopilot in order to engage hovering flight towards the stop position S while maintaining heading, the flight setpoints including amongst other things a new heading Ψn. 10. A method according to claim 1, for engaging hovering flight for a rotary wing aircraft, wherein the aircraft has firstly a first control lever for controlling movements in rotation of the aircraft about the longitudinal and transverse directions X and Y, and secondly a second control lever for controlling movements of the aircraft in translation along the elevation direction Z, and a first control member is the first control lever, and a second control member is the second control lever, the first control member having the first movement axis A and the second movement axis B, the second control member having the third movement axis C. 11. A method according to claim for engaging hovering flight for a rotary wing aircraft, wherein a violent action on the first control lever causes the autopilot to deactivate maintaining the flight path angle setpoint P, the first control lever then controlling movements in rotation of the aircraft about the longitudinal direction X, and the second control lever controlling movements in translation of the aircraft along the elevation direction Z. 12. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein the aircraft has firstly a first control lever for controlling movements in rotation of the aircraft about the longitudinal and transverse directions X and Y, and secondly a second control lever enabling movements of the aircraft in translation to be controlled along the elevation direction Z, and a first control member is positioned on the first control lever and a second control member is positioned on the second control lever, the first control member having the first movement axis A and the second movement axis B, and the second control member having the third movement axis C. 13. A method according to claim 12 for engaging hovering flight for a rotary wing aircraft, wherein the second control member has a fourth movement axis D. 14. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein the control members are calibrated and control precise movements of the aircraft. 15. A method according to claim 1 for engaging hovering flight for a rotary wing aircraft, wherein the first and second threshold speeds Vthresh1, Vthresh2 are a function of the speed and the direction of the wind and also of the lateral speed VY. 16. A system for engaging hovering flight for a rotary wing aircraft, the aircraft following a track Tsol relative to the ground with a forward speed Va: the aircraft comprising:a longitudinal direction X extending from the front of the aircraft towards the rear of the aircraft, an elevation direction Z extending upwards perpendicularly to the longitudinal direction X, and a transverse direction Y extending from right to left perpendicularly to the longitudinal and elevation directions X and Z; and at least one rotary wing having a plurality of main blades with collective pitch and cyclic pitch that are variable about respective pitch axes, the aircraft being capable of performing movements in rotation about the directions X, Y, Z and movements in translation along the directions X, Y, Z; andthe system for engaging hovering flight comprising: at least one control member provided jointly with a plurality of movement axes A, B, C, D; andan autopilot generating command orders in predefined modes of operation, the command orders being suitable for causing the movements of the aircraft in rotation and/or in translation relative to the directions X, Y, Z;wherein the system for engaging hovering flight is capable of performing the method according to claim 1 for engaging hovering flight for a rotary wing aircraft.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (11)
Caldwell Donald G. (Mesa AZ) Osder Stephen S. (Scottsdale AZ), Automated helicopter flight control system.
Salesse-Lavergne, Marc; Queiras, Nicholas; Eglin, Paul, Method of assisted piloting of a rotary wing aircraft having at least one propulsion propeller, an assisted piloting device, and an aircraft.
Sahasrabudhe, Vineet; Stiles, Lorren; Macisaac, Margaret A.; Judge, John H.; Faynberg, Alex, Stabilized approach to a point in degraded visual environment.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.