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Aviation History
1961
1961 - 1535.PDF
HAWKER. HISTORY, newly recorded in Mr Francis K. Mason's book "Hawker Aircraft Since 1920," published by Putnam, is epitomized in this fine study of the surviving Hart, flown by Duncan Simpson. Formerly Hawker's demonstration and development Han registered G-ABMR, it now bears the Service number J99'33, which actually belonged to the first production Han bomber for the RAF. In point of fact the former "MR" differs considerably from RAF Harts, notably in having a supercharged, instead of a normally aspirated, Rolls-Royce Kestrel engine CORRESPONDENCE The Editor of "Flight'" is not necessarily in agreement with the views expressed by correspondents in these columns.The names and addresses of the writers, not for publication in detail, must in all cases accompany letters. 639 FLIGHT. 19 October 1961 Reheat in Turns DURING the SBAC Display, which I attended on September 5,a Lightning performed several very tight turns. The com- mentator particularly called attention to the fact that the aircraft could be "kicked" (his word) into a tighter turn by the use of reheat, i.e., increased thrust. This was demonstrated and indeed the increase in the rate of turn on applying reheat was clear. The point of this letter is to ask for an explanation of this effect. I may say that I have been led into much argument about this and would value some assistance. Since the Lightning has two engines mounted one above the other, the increased rate of turn could presumably be achieved by "light- ing'" the lower engine only to reheat; but 1 gained the impression that both engines were on reheat. Perhaps someone could settle a subsidiary argument on this sub- ject. Does the centre of thrust along the axis of the aircraft alter on application of reheat ? This may be completely unconnected with the first question, but 1 would appreciate an answer. West Byfleet, Surrey C. S. MAPLE, Maj [Wg Cdr R. P. Beamont. manager flight operations. English ElectricAviation, has made the following comments: "I am glad that demon- stration of the use of reheat coincident with increase in incidence didin fact have the effect of drawing the onlookers" attention, as this was precisely the intention."The position of the engines mounted one above the other has no noticeable effect on trim, and so does not alter the thrust line significantlywith the use of both or single, reheat; neither does use of reheat 'kick' the aircraft into increased rate of turn. This was an intentionalillusion. "What the onlooker was seeing was the aircraft initially balanced at acombination of maximum cold thrust and a g value at which the total drag value (mostly induced) exactly balanced out at a stabilized speed.From here g could not be increased without rapid loss of speed unless more power was used, so at this point maximum reheat was engaged andincidence further increased to reduce the radius of turn down to the point where this further increase in induced drag exactly balancedmaximum reheat thrust at stabilized speed. "The trick was to bring off these various points of balance at theappropriate places relative to the spectators, but there was no question of the reheat itself kicking the aircraft into an increased rateof turn.'"—Ed.] Skybolts over Cheshire WOULD the following information be of interest to yourreaders, or has it already been noticed? At 4.45 p.m. today (October 4) a Vulcan B.2 flew over this area, probably to land atnearby Woodford. The interesting feature was that it carried two GAM-87 Skybolt missiles, which could be clearly seen hung onpylons just outboard of the engine nacelles. The missiles appeared to have a smaller number of more-squared fins than the onesin your photograph in Flight for June 15. There were no markings under the wings of the Vulcan. 1 would like to take this opportunity of saying how much Ilook forward to my weekly Flight, which I have been taking now for two years. Cheadle Hulme, Cheshire. STEPHEN DULSON (aged 12) Persian Gulf Pioneering THE interesting article by Gp Capt John A. McDonald in yourissue of October 5, Early Flying in the Persian Gulf, unfortun-ately does not give credit where credit is due. It was No 203 Sqn, and not No 205 Sqn, that was based on Basra and that opened up thePersian Gulf for landplanes. I was in No 203 Sqn from 1930 to 1932 and took part in theMasira Island and Merbat flights. Two Supermarine Southamptons made the first flight to Masira to survey and mark out the landing-ground. We were the first foreigners to land for some 50 years. In this operation we were supported by HMS Penzance. TheMerbat operation took place about a year later with two Short Rangoons. St Helens, loW F. R. DREW (Gp Capt, Ret) Wanted: Me262 Information I WISH to appeal for reminiscences and general informationconcerning the world's first operational jet fighter—the Messerschmitt Me262—on which I am preparing a book. This Luftwaffe fighter saw limited service in the Low Countries and more extensive use over the German homeland from July 1944 until the cessation of hostilities in May 1945. Very little has ever been published on this last phase of the air war, and although
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