IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0334548
(2006-01-19)
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등록번호 |
US-7611098
(2009-11-16)
|
우선권정보 |
FR-05 08212(2005-08-01) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
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인용정보 |
피인용 횟수 :
7 인용 특허 :
7 |
초록
▼
A process wherein an aircraft starts from a cruising position by flying at a cruising speed to reach a position that intercepts the glide slope. The process can include the steps of decelerating from the begin descent speed and the begin descent altitude of the aircraft during a first descent phase
A process wherein an aircraft starts from a cruising position by flying at a cruising speed to reach a position that intercepts the glide slope. The process can include the steps of decelerating from the begin descent speed and the begin descent altitude of the aircraft during a first descent phase with a first flight path angle until reaching a predetermined speed corresponding to an aircraft speed at which the aircraft flaps are extended for transitioning to a first intermediate position; following a second phase of descent at a considerably constant speed with a second flight path angle; and decelerating during a third phase of descent with a third flight path angle to reach the glide slope interception position. The aircraft slats and/or flaps adopt their first intermediate position considerably when transitioning from the second to the third phase of descent.
대표청구항
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The invention claimed is: 1. A flight management process for landing an aircraft at an airport, said aircraft comprising aerodynamic wing flaps that are movable between a fully retracted position and a fully extended position while transitioning through intermediate positions, wherein said process
The invention claimed is: 1. A flight management process for landing an aircraft at an airport, said aircraft comprising aerodynamic wing flaps that are movable between a fully retracted position and a fully extended position while transitioning through intermediate positions, wherein said process for landing comprises four consecutive linear descent flight paths and the steps of: following a first linear descent flight path during which said aircraft decelerates from a begin descent speed and a begin descent altitude of the aircraft, wherein said first linear descent flight path has a first flight path angle and lasts until said aircraft reaches a predetermined speed, and wherein during said first linear descent flight path, said flaps transition from the fully retracted position to a first intermediate position, following a second linear descent flight path during which said aircraft maintains a substantially constant speed, wherein said second linear descent flight path has a second flight path angle that is different from said first flight path angle, following a third linear descent flight path during which said aircraft decelerates, wherein said third linear descent flight path has a third flight path angle that is different from said second flight path angle and continues until said aircraft reaches a glide slope interception position, extending the flaps to assume said first intermediate position, when transitioning from the second to the third linear descent flight paths; and following a fourth linear descent flight path from said glide slope interception position, wherein during said fourth linear descent flight path, said aircraft follows a glide slope for said airport. 2. The flight management process according to claim 1, wherein the first and third flight path angles are equal, and the second flight path angle is higher, in absolute value, to the first and third flight path angles. 3. The flight management process according to claim 1, wherein the flaps transition to a second intermediate extended position, then, to a third intermediate extended position and the landing gear is only extended when the flaps are in said third intermediate position that coincides eventually with a final landing position. 4. The flight management process according to claim 1, wherein the flaps transition to said first intermediate position when the aircraft reaches a speed lower than a speed required to transition to the first intermediate position for a landing consisting of less than four linear descent flight paths. 5. The flight management process according to claim 3, wherein the flaps move to a second intermediate position when the aircraft reaches a speed lower than a speed required to transition to the second intermediate position for a landing consisting of less than four linear descent flight paths. 6. The flight management process according to claim 1, further comprising, prior to landing, calculating angles, speeds, and flap configurations for said four linear descent flight paths. 7. The flight management process according to claim 6, wherein said calculating is performed in reverse and includes the following steps: from a landing strip level, determining a first flight segment at landing speed and a flight path angle that coincides with the glide slope foreseen for this landing strip and that is memorized in a navigation system of the aircraft; from a predetermined altitude, calculating a second flight segment with a same flight path angle of the acceleration in reverse of the aircraft up to an altitude that intercepts the glide slope, while this calculation takes into account a possible change in configuration of the flaps of the aircraft at a speed that depends on the type of plane and its weight; from the interception altitude of the glide slope, calculating a third flight segment until the aircraft reaches a predetermined speed corresponding to the transition of the external smooth configuration of the aircraft at the first intermediate position of the flaps and determination of the corresponding altitude, with the flight path angle having been predetermined, calculating a fourth path segment of the aircraft path from the altitude determined during the previous phase, at constant speed, and calculating a fifth path segment, in the direction of travel of the aircraft, from the point of the begin descent path, to transition, possibly at constant altitude, from the aircraft speed at the begin descent speed that coincides with the transition of the external smooth configuration of the aircraft to the first intermediate position of the flaps, and intersection of this fifth segment with the fourth to determine the begin descent path of the aircraft. 8. The flight management process according to claim 1, comprising, during descent of the aircraft to a landing strip, proposing to the pilot to go from a smooth external configuration of the aircraft to the first intermediate position of the flaps either at a first speed that coincides with a recommended speed for transitioning to the first intermediate position of the flaps, or at a speed lower than the recommended speed, and that permits reducing the aircraft noise. 9. The flight management process according to claim 3, comprising, during descent of the aircraft towards a landing strip, proposing to the pilot to transition from the first intermediate position of the flaps of the aircraft to the second intermediate position or to a first speed that coincides with a recommended speed for transitioning to the second intermediate position of the flaps, or at a speed lower than the recommended speed, and that permits reducing the aircraft noise.
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