| 摘要 |
<p>1,177,954. Deflecting propulsive jets. ROLLSROYCE Ltd. 20 April, 1967 [21 April, 1966], No. 17439/66. Heading B7G. [Also in Division F1] The invention relates to a variable area jet propulsion nozzle (see Division Fl) and is described with reference to a nozzle which may be rotated about an axis so as to control the direction of discharge of the air or gases therefrom. The pilot's control lever for selecting the nozzle area is connected to a demand input shaft 85, the shaft 85 being connected to an epicyclic gear unit 80 the ring gear of which is also in engagement with the gear segment 87 which is supported on the nozzle 16 for movement relative thereto about the axis of the nozzle bearing 20. The gear segment 87 also meshes with a gear 88 secured to the shaft 61 of the control unit 60 for the nozzle area so that rotation of the shaft 85 is transmitted to the shaft 61. The planet carrier 82 of the epicyclic gear unit 80 is connected through gear 89 to a gear segment 90 secured to the nozzle 16 concentric with the bearing 20 so that rotation of the nozzle does not affect the demand setting of the shaft 61. When the nozzle is rotated the segment 87 must travel together with the nozzle to prevent unwanted rotation of the gear 88 and shaft 61. The segment 90 and gear 89 ensure that when the nozzle rotates, rotation is imparted to the annulus 84 independently of the input shaft 85 and the segment 87 is moved together with the nozzle.</p> |
