Turbojet engine nacelle including a device for absorbing circumferential stresses
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02K-001/80
F02K-001/70
B64D-029/06
F02K-001/76
출원번호
US-0692227
(2012-12-03)
등록번호
US-8869506
(2014-10-28)
우선권정보
FR-10 54323 (2010-06-03)
발명자
/ 주소
Joret, Jean-Philippe
Segat, Peter
Vauchel, Guy Bernard
Bouret, Georges Alain
출원인 / 주소
Aircelle
대리인 / 주소
Brinks Gilson & Lione
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A nacelle for a turbojet engine of an aircraft is provided that includes a fan case, an internal structure positioned upstream from the fan case, and a thrust reverser positioned downstream from the fan case. The thrust reverser includes a cowl delimiting an external line (LE) and including two remo
A nacelle for a turbojet engine of an aircraft is provided that includes a fan case, an internal structure positioned upstream from the fan case, and a thrust reverser positioned downstream from the fan case. The thrust reverser includes a cowl delimiting an external line (LE) and including two removable half cowls. A device for absorbing circumferential stresses are shaped so as to lock the half cowls in the closed position when it occupies a locking configuration on the one hand and for allowing the opening of the half cowls when it occupies an unlocking configuration on the other hand. The stress absorbing device is positioned under an upstream portion of a pylon and is exclusively attached to the half cowls in order to allow the opening of the two half cowls independently of the opening/closing of an external fan cowl.
대표청구항▼
1. A nacelle for a turbojet engine of an aircraft, including: a fan case surrounding a fan upstream from the turbojet engine, said fan case being surrounded by an external fan cowl and being attached on a pylon for supporting the nacelle;an internal structure positioned upstream from the fan case an
1. A nacelle for a turbojet engine of an aircraft, including: a fan case surrounding a fan upstream from the turbojet engine, said fan case being surrounded by an external fan cowl and being attached on a pylon for supporting the nacelle;an internal structure positioned upstream from the fan case and surrounding the turbojet engine; anda thrust reverser positioned downstream from the fan case and comprising a cowl defining with the internal structure a ring shaped vein for letting through an airflow, said cowl delimiting an external line of said ring shaped vein and including two removable half cowls respectively having upper edges equipped with hinges that bin the two removable half cowls on the pylon, said hinges being shaped as to allow pivoting of the two removable half cowls between closed and open positions around respective longitudinal axes forming two hinge lines; anda device for absorbing circumferential stresses connecting together the upper edges of the two removable half cowls, said stress absorbing device being shaped so as to lock the two removable half cowls in the closed position when said stress absorbing device occupies a locking configuration and for allowing the opening of the two removable half cowls when said stress absorbing device occupies an unlocking configuration,wherein said stress absorbing device is positioned under an upstream portion of the pylon, upstream from the hinges of the two removable half cowls on the pylon, and is inserted between the external line of the ring shaped vein and the two hinge linessaid stress absorbing device being exclusively attached to the two removable half cowls in order to allow the opening of the two removable half cowls independently of the opening/closing of the external fan cowl,said stress absorbing device including at least one actuator equipped with a rod slidably mounted on a hollow body between a retracted position in the body and a deployed position out of the body, said rod having a first end permanently attached on the upper edge of one of the two removable half cowls and a second opposite end extending in the body, said body having a first end provided with an orifice for letting through the rod and a second opposite end permanently attached on the upper edge of the other removable half cowl, wherein the actuator further includes a locking/unlocking system cooperating with the rod in order to lock/unlock the rod in the retracted position,said actuator being an actuator system with constant links, wherein said actuator is permanently attached on both two removable half cowls of the thrust reverser. 2. The nacelle according to claim 1, wherein the fan case comprises a downstream end, and the pylon comprises a downstream portion, said downstream end of the fan case being attached to said downstream portion of the pylon by upper fasteners, and wherein the stress absorbing device is positioned between said upper fasteners and the hinges. 3. The nacelle according to claim 1, wherein the locking/unlocking system includes: a blocking element positioned in the body and cooperating with the rod for blocking said rod in a retracted position of the rod, said blocking element being movably mounted in the body between a blocking position and an unblocking position of the rod; anda driving system designed for driving the blocking element into displacement between the blocking and unblocking positions and vice versa. 4. The nacelle according to claim 3, wherein the blocking element includes at least one hook having a free end designed so as to cooperate with the second end of the rod, said hook being movable in translation in the body between the blocking position in which the free end of the hook cooperates with the second end of the rod and the unblocking position in which the free end of the hook is moved away from the second end of the rod and allows displacement of the rod. 5. The nacelle according to claim 3, wherein the rod is at least partly threaded, the blocking element includes a nut mounted on the threading of the rod inside the body and the driving means include a rotary motor designed for driving the rod into rotation. 6. The nacelle according to claim 5, wherein the rotary motor is controlled by a system for opening the two removable half cowls of the thrust reverser so that the speed of rotation of the rod imposed by the rotary motor allows the nut to be driven in translation more rapidly than the opening of the two removable half cowls by the opening system. 7. The nacelle according to claim 5, wherein the rotary motor is independent of a system for opening the two removable half cowls of the thrust reverser, and the rod has on its second end a part forming an abutment for a nut.
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이 특허에 인용된 특허 (11)
Buxton John A. (Westminister CA), Counterbalanced cowling assembly for a pylon-mounted engine and nacelle therefor.
Soulier, Pascal-Marie Paul Marcel; De Sorbay, Aurelie, Coupling device intended to connect first and second elements which can move relative to one another.
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