| 摘要 |
1,139,941. Installations with two or more turbines; engine mountings. ROLLS-ROYCE Ltd. March 29, 1966 [March 30, 1965], No. 13460/65. Headings F1M and F1Q. In an engine drive two engines 11, 12 drive a common output shaft, an assembly including one engine being rigidly mounted from a support while the other engine is mounted on the support solely through the assembly, through joints permitting some freedom of angular movement. The invention is described as applied to a helicopter rotor drive employing two gas turbines engines 11, 12. The assembly of engines and gear-box and shafts is mounted from the helicopter at three suspension points 55, 56, 57 one at each side of the gear-box casing and the other at the housing 46 connected between the engines at the front. The engine 12 and gear-box casing form a rigid assembly whereas the engine 11 is supported from this assembly through members 49, 51, 54 and 28 Figs. 4 and 5 (not shown) and Fig. 2 permitting some freedom of movement moreover linear and angular movement of the shaft 19 can be accommodated by the members 53 and 44. The flange 48 Fig. 5 (not shown) has an internal lug which can turn on a pin 49 and in fact the lug on the flange 48 is mounted on a member which can turn on the pin 49 through a spherical connection 51 so that there is limited freedom of angular movement in all directions between the housing 46 and the casing of the engine 11. The drive to a tail rotor may include a train of spur gears from the output shaft to a rearwardly extending shaft. |
