FIELD: engines and pumps.
SUBSTANCE: nacelle comprises front cowl 13 and rear cowl 1a. Rear cowl 1a is arranged to displace between upstream upper position corresponding to decreased section of nozzle 9 and downstream lower position corresponding to increased cross-section of nozzle 9. Nacelle comprises also mid element 25 arranged abut on said front cowl 13 to confine cavity 27 receiving upstream upper edge 11 of said rear cowl 1a when said coal is in its upper upstream position. Said mid element 25 comprises rest 29 retaining drive means 27 that drive said rear coal 1a. Front cowl 13 is equipped with retainers 39 arranged immediately behind upstream zone 35. Cavity 27 has radial inner edge that forms inclined section 31 for upper upstream edge 11 of said rear cowl 1a.
EFFECT: ruled out locking of outer wall displacement relative to cowl.
17 cl, 18 dwg
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