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Aviation History
1938
1938 - 0744.PDF
270 FLIGHT: MARCH 17, 1938. , Dual ignition is< provided, and each of the two spark-plug chambers contains two pluga, making four in all for tine eight cylinders. The drive to the airscrew i,s taken from the large bevel gears at the base of each of the blocks. These engage each other directly, and the third bevel for the airscrew can be driven from either one of them according to whether the engine is on its side, has one block vertically upwards (as in the illus- tration), or one block vertically downwards. So far as run- ning is concerned, the particular attitude of the engine is immaterial. A small diameter extension on the two blocks passes through each fixed head, and carries the top bearing and a drive respec- tively to the two magnetos and to the supercharger. In the experimental engine a Centric car blower was mounted above New England-Australia Bid M R. H. F. BROADBENT, who left Lympne at 3 a.m. onSaturday, landed at Rangoon on Tuesday at 9.23 a.m. G.M.T. Flying a Percival Vega Gull, he is making an attempt 011 the England to Australia solo record at present held by Miss Jean Batten. Compliment EVERYBODY remembers Mr. Frank Murphy's compellingchats in advertisements when, until twelve months ago, he was a radio manufacturer. Now he is turning his attention to furniture, and this week he pays a compliment to the aviation industry by seeking among its members six men to form his key staff. A Delayed-drop Record TPHOUGH France's recent aeronautical achievements, on the -*- whole, have been by no means dazzling in their brilliance, a Frenchman, James Williams, claims to have beaten the world's record for a delayed parachute dxop. Williams stepped out of a Mureaux observation monoplane at 8,400 metres (about 27,560 ft.) deferring the opening of his 'chute for 2 min. 20 sec—until he was 350 metres (1,064ft.) from the ground. Stratospheric Record? WHAT will probably be the largest balloon ever built is tobe used this year for a Polish attempt on the ultimate altitude record. Its capacity is to be 135,000 cu. m., and the envelope is of a special cold-resisting artificial rubber. The crew will consist of Capt. Hynek and Capt. Vurzynfky— the latter of Gordon Bennett fame—and they will be accom- panied by Dr. Jocko-Narkiewicz, a Polish scientist, who hopes to make some really useful and interesting observations. The starting point will be at Ojcow, near Cracow, and they hope to reaj:h a height of at least 30,000 metres (98,500 feet). Llewellyn's Next Venture F/O. DAVID LLEWELLYN is plan-ning to make the first aeroplane flight to Mauritius, in the Indian Ocean. Flying a small machine, he will be ac- companied by Miss Planel, a resident of the Island, whom he taught to fly three years ago. The flight will be made to- wards the latter part of the summer. the horizontal block and driven through a shaft and bevels. The cylinders have cooling fins running parallel with their bores. The jointing problems would be too intricate to permit practical liquid cooling. A special airflow arrangement, known as the R.A.D. Contra- flow system, is used. This would appear to lend itself excel- lently to modern ducted cooling. To return to the hydraulic pump, the principle is exactly similar to that of the engine, and while the reciprocating move- ment of the pistons (or, in this case, plungers) produces the pumping action, the rotation controls the distribution of fluid from suction to delivery. The valves are arranged a little differently on the pump, as will be seen from the diagram. By changing over the connections the pump can be used equally well in either direction. Cygnets' Set-back TT is understood that C.-W. Aircraft, of Slough, makers of the •*• all-metal Cygnet two-seater, have been disappointed in their expectations of a large amount of capital, and that they are therefore unable to continue their programme of Cygnets for this year. The design is completely tooled up ready for pro- duction. C.-W. Aircraft are continuing to operate as tool makers to the industry. The Straight Fleet APART from the five Hillson Pragas, with J.A.P. engines,some mention of which has already been made, the Straight Corporation has recently taken delivery of four Miles Magisters equipped for blind flying and aerobatic training. Needless to say, the Praga flying rates at the Straight aerodromes will be very low indeed, and the " A " licence course will be provided for ^r2 10s. Incidentally, the Straight Corporation is about to arrange a series of training courses at special rates, and arrange- ments are being made to provide some kind of employment agency for those " B " licence pilots who have been trained by them. -.••-. . . Witney School Plans MRS. B. S. MACDONALD, who, as reported a fortnightago, has taken over the Witney Aerodrome, near Oxford, has some attractive plans for the development of the training school for ground engineers and radio operators. At the moment there are fifteen resident pupils. The Witney and Oxon Aero Club will continue to offer " A" and " B" licence training and the usual club facilities, and C. of A. overhauls will be carried out by a competent staff. "A," " C" and " X " ground engineers' licence training is given, and coaching for the 2nd class Navigators' certificate is available. With the aid of Marconi equipment having a range of 200 miles, full instruction for ground and air radio licences is offered. Mrs. Macdonald is herself the holder of "A" and "B" licences, and is studying for a " 2nd N." She learned to fly at Gatwick in its pre-airport days. " Flight"photograph- HERCULES HARNESSED: This photograph—the first close- up to be published of the instal- lation of the Bristol two-row sleeve-valve Hercules in its Northrop A. 17 flying test-bed —shows how compactly a unit giving over 1,300 h.p. can be installed. Features to be noted are the single large exhaust outlet, the air intake scoop above the cowling, the control- lable cooling gills and the mounting behind the bulkhead for the Bristol remot^ box for auxiliary drives.
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