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A method for opening a mobile cowl actuated by a motor and equipping a turbojet thrust reverser that includes at the start of the opening phase, a bridling step whereby the speed of the mobile cowl is maintained lower or equal to a predetermined threshold speed.

Titel:	Device for actuating mobile cowls equipping a thrust reverser
Autor/in / Beteiligte Person:	Dehu, Michel Philippe ; Metezeau, Fabrice Henri Emile ; Baudu, Pierre Andre Marcel ; Le-Coq, Vincent Pierre Germain
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2008
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20080168762 Publication Date: July 17, 2008 Appl. No: 11/882669 Application Filed: August 03, 2007 Assignees: AIRCELLE (GONFREVILLE L'ORCHER, FR) Claim: 1. Device for actuating at least two mobile cowls equipping a thrust reverser, comprising: for each cowl, at least two extreme actuators suitable for opening and closing said cowl, for each cowl, at least one slave flexible transmission shaft establishing mechanical connection between the two actuators of said cowl, for each cowl, at least one mechanical coupling device associated to said at least one slave flexible transmission shaft, one motor, and at least two master flexible transmission shafts, each master flexible transmission shaft establishing mechanical connection between said motor and one respective mechanical coupling device, the rotation of said electrical motor causing the actuation of said master flexible transmission shafts, which causes the actuation of said mechanical coupling devices, which causes the actuation of said slave flexible transmission shafts and thereby the extension or retraction of said actuators. Claim: 2. Device according to claim 1, comprising: for each cowl, two extreme actuators and one central actuator, for each cowl, two slave flexible transmission shafts, each flexible transmission shaft establishing mechanical connection between said central actuator and one respective extreme actuator, and for each cowl, one mechanical coupling device associated to one of said two slave flexible transmission shafts. Claim: 3. Device according to claim 1, wherein said motor is an electrical motor. Claim: 4. Device according to claim 3, wherein said electrical motor is an automatically controlled synchronous motor. Claim: 5. Device according to claim 1, comprising means for limiting the speed of said cowls at the beginning of said opening phase. Claim: 6. Device according to claim 5, wherein said speed limiting means comprise a control interface and means for counting the number of revolutions made by one of the master flexible transmission shafts connected to the electrical motor. Claim: 7. Device according to claim 6, wherein said counting means comprise a resolver or a sensor. Claim: 8. Device according to claim 1, wherein said actuators are ball screw actuators. Claim: 9. Device according to claim 2, wherein said motor is an electrical motor. Claim: 10. Device according to claim 2, comprising means for limiting the speed of said cowls at the beginning of said opening phase. Claim: 11. Device according to claim 3, comprising means for limiting the speed of said cowls at the beginning of said opening phase. Claim: 12. Device according to claim 4, comprising means for limiting the speed of said cowls at the beginning of said opening phase. Claim: 13. Device according to claim 9, comprising means for limiting the speed of said cowls at the beginning of said opening phase. Current U.S. Class: 602/262 Current International Class: 02

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Device for actuating mobile cowls equipping a thrust reverser