| 摘要 |
<p>1,141,141. Aircraft undercarriages. HAWKER SIDDELEY DYNAMICS Ltd. 17 Jan., 1966 [19 Jan., 1965], No. 2215/65. Heading B7G. A retractable aircraft undercarriage comprises an outrigger member 15 extending laterally from the vehicle from an upright pivot 16, a leg 13 depending from a fore-and-aft pivot 18 at the outer end of the outrigger member and carrying a wheel 11 at its lower end, and a link 19 coupling the leg to the aircraft body so that as the outrigger member is retracted inwardly about the pivot 16, the leg is swung upwardly and outwardly about the pivot 18 so that when fully retracted the outrigger member and the leg extend in the fore-and-aft direction and the wheel lies in the horizontal plane. The outrigger member is retracted and extended by an hydraulic jack and the wheel is mounted on a trailing arm 12 on the leg 13. Alternatively the leg may be an oleo leg carrying a bogie beam pivoted to it, further linkage being provided between torque links connecting the bogie beam and the leg, and the outrigger member, to rotate the bogie beam during retraction about its mounting pivot so that the wheels lie one behind the other when retracted instead of side by side. The link 19 may be pivoted to the aircraft body by a joint 26, or to enable it to be shortened its inner end may move in a cam track. The undercarriage is retracted behind two doors 23, 24, the door 24 being closed when the undercarriage is fully extended. The pivot 16 may be at the rear extremity of the outrigger member, and a fuselage contact area may be provided to take some of the load, for example near a lock (41).</p> |
