| 摘要 |
976,854. Jet propelled aircraft. DE HAVILLAND ENGINE CO. Ltd. Dec. 7, 1962 [Dec. 7, 1961], No. 43888/61. Heading B7G. [Also in Division F1] An aircraft jet propulsion and lift engine comprises a forward facing inlet 6 (Fig. 1), annular air ducting 7 leading to the intake 5 of a compressor 3, an annular combustion chamber 10, a first turbine 11 driving the compressor and a second turbine 13 driving a fan 15 in the air ducting 7. Thrust is provided by air from the ducting 7 issuing from nozzles 9 and by exhaust gases issuing from nozzles 18. The nozzles are rotatable in unison through a chain and sprocket drive 35 (Fig. 3) by an air motor 24 having a follow-up device 26 and powered by air bled from the compressor. The two gas ducts 17 leading to the nozzles 18 are streamlined where they pass through the ducting 7. In another embodiment (Fig. 5, not shown) the fan in the ducting 7 is mounted in front of the gas ducts 17 and is connected to the turbine 13 by a shaft. In this embodiment the exhaust gases may flow to the nozzles 18 (67 in Fig. 8) through radial ducts 59 and an annular manifold 65. The engine is mounted in an aircraft (Fig. 9, not shown) with the gas nozzles 18 ahead of and the air nozzles 9 aft of the centre of gravity. Specifications 881,663 and 915,400 are referred to.
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