| 摘要 |
<p>1,019,434. Jet-propelled aircraft. ROLLSROYCE Ltd. Dec. 11, 1964, No. 50649/64. Heading B7G. [Also in Division F1] A gas turbine engine 18 has a plurality of compressor bleed air apertures 22 and is mounted in an aircraft in a housing 21 which forms part of a manifold 24 for the bleed air. As described, an aircraft has a forward propulsion jet engine 15 in its fuselage and a housing 14 on each side of the fuselage containing seven direct lift turbo-jet engines 18. Each engine 18 has annular abutments 25, one on each side of the apertures 22, which co-operate with inflatable tubes 26 in the housing to define with the engine easing wall 20, and a groove 23 in the housing, an annular manifold. The tubes 26 may be deflatable to form dump valves. The manifold is connected by an outlet duct 27 to stabilizing jet nozzles, air motors or other pneumatic equipment, and contains cascades of vanes 30 angled to provide a greater resistance to the flow from the apertures near the outlet 27, so that the airflow from the apertures is constant around the engine. Alternatively a perforated sleeve (Fig. 4, not shown) fixed to the housing may surround the engine, the sizes of the perforations being varied to achieve a uniform flow. The lip of the air intakes is inflatable and may be covered by doors 43.</p> |
