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Aviation History
1943
1943 - 1635.PDF
JUNE 24TH, 1943 657 The Armstrong Siddeley seven-cylinder air-cooled Cheetah X engine of 420 h.p. Diameter is 47.7m. and length 47.425m. Maximum revs for all out level speed 2,425 r.p.m. Maximum revs for T.V. diving 2,910 r.p.m. AkflCULATED CONNECTING ROD MASTER CONNECTING ROD FRONT COVER le layout and sturdy build of this engine. The Cheetah lal form it was known as the Lynx Major, since it was developed from the Jaguar. is for engine lubrication, and the auxiliary pressurepump is for operating the v.p. airscrew when this 'S fitted. Starting is by Rotax electric motor or by the crank handle, either of which turn the crankshaft by means of a reduction gear and sleeve-engaging jaw. Damage through back-fire is prevented by a clutch. Breeze igni- tion harness is utilised. The engine is attached to the aircraft tubular framework by a large-diameter conical steel ring bolted to the rear face of the crankcase. Under maximum continuous cruising conditions at 3*75 b.h.p. at 2,100 r.p.m. with minus J lb./sq. in. boost, the consumption is 20.5 galls/hr. This is reduced under maximum economical cruising conditions at 230 b.p.h. at"2,100 r.p.m. to 14 galls/hr. Four New Civ it Aircraft TT has now been disclosed that the four British firms who-*• have been given the task of preparing designs for post-war civil aircraft—a "spare time" job to be done without ham-pering war production—are the Bristol Aeroplane Co., Handley Page, Ltd., A. V. Roe and Co., and Short Bros, and Saunders-Koe, Ltd., jointly. This choice is the result of recommendations made to theGovernment by the civil aviation committee presided over by Lord Brabazon, and has no doubt been accelerated by thedetermined attitude of speakers in the House of Commons. The necessary plans are being put in hand immediately and,should the resultant aircraft be ready in time, they will be invaluable for war transport, but their chief function will bethat of ensuring that Britain has suitable types in readiness to reopen .our Empire and other air routes after the war. One oth«r civil type is already in production, namely, theAvro York, which might be described as a Lancaster with an entirely new "civilian" fuselage. One of these will be aspecially equipped aircraft for the use of the Prime Minister on <his long-distance journeys, and is^jiow beingrcompleted.Otner Yorks-«will go into service as war transports. Of the four new types now to be designed, three are land-planes and one, for which Shorts and Saunders-Roe are responsible, is to be a giant flying-boat. The1 projected flying-boat, it has been revealed by Sir AlliottVerdon Roe, will be far bigger and be of more advanced design than any aircraft yet built in this country and will becapable of carrying up to 200 passengers on comparatively short journeys. A range of 4,000 miles based on a fuel load of33 tons has also been mentioned. Details of the three land- planes may not yet be disclosed, but it can be assumed thatthey will be of comparable size and performance. Major Jack's BackH IS many friends in the Biitish aircraft industry will beglad to hear that Maj. Jack Stewart has now fully recovered from his illness. Not only so, but he is back in theindustry again, or will be on Monday next. On June 28th he starts with \V. S. Shackleton, Ltd., of 175, Piccadilly,where one of his first tasks will be to " liaise'' between the different Ministries and firms which have no London office andare located some distance away. There should be a useful job of work to be done in that way,more especially so since Maj. Stewart has had experience of the industry as well as of the Ministries. Before the war hewas joint managing director with Maj. Mayo, of the Mayo Composite Aircraft Co., Ltd. He then joined the Air Ministryas one of the Assistant Directors of Aircraft Production, subse- quently to become a Deputy-Director at the Ministry of Air-craft Production. From the latter position he had to resign owing to ill-health. "Jack" Stewart's connection with the aircraft industrydates back to the period after the wariQ.14-18, when he joined the Aircraft Disposal Co., Ltd. HrS activities included CirrusAero Engines, Ltd.,.and Boulton and Paul, Ltd. He will be heartily welcomed back in' the industry, and he and Mr.Shackleton should make a good team. Both believe that "aviation is the coming thing."
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