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Aviation History
1954
1954 - 1915.PDF
870 FLIGHT, 25 June 1954 CORRESPONDENCE . . . amongst those under consideration. It was unfortunate, therefore, that the information used on one of them, the Prestwick Pioneer, was somewhat out of date, and the comparison of take-off distance, which is obviously an important factor in this type of operation, was inclined to be misleading, in that in some cases take-off distance to 50 ft was given and in others what appeared to be take-off ground run. For instance, a payload of 1,090 lb with 40 gal of fuel and a take-off distance of 230 yd (to 50ft) was shown for the Prestwick Pioneer, as compared with 1,800 lb payload with 20 gal of fuel and a 185-yd take-off distance (obviously ground-run) for the nearest overseas type. The all-up weight and payload of production models of the Prestwick Pioneer has in the meantime been increased by 400 lb, and the comparison would now read, for the Prestwick Pioneer, 1,500 lb payload (plus 30 cu ft hopper) with 20 gal fuel and a take-off run of 80 yd, as compared with the 1,800 lb payload and 185-yd take-off ground-run of the transatlantic type. Prestwick Airport. D. F. MCINTYKE, Managing Director, Scottish Aviation, Ltd. June June June June June June July July July July July July July July July 24-25 24-28 26 26-27 27 29 3 i 3 3-5 3-5 4 8-12 9, 10 July 10-11. July 10-12 July Sept. 18 7-12 FORTHCOMING EVENTS Women's air rally, Deauville. Royal Danish Aero Club: World Model Glider Championship Odense. Plymouth Air Display Committee: A irdisplay. Aero-Club de Fleurs de I'Orne: Normandie Rally. Aero Clubs of France and Marseilles: International speed con test, Marseilles. Milan Aero Club: Milan Grand Prix R.N.A.S. Ford: Air Day. R.N.A.S. Eglinton: Air Day R.N.A.S. Bramcote: Air Day. R.Ae.C. members' Deauville Rally. Swiss watch rally, Bienne, Switzerland. Cote d'Argent Aero Club: Rally, Royan, Charente Inferieure. British Institution of Radio Engineers: Industrial Electronics Convention, Oxford University. College of Aeronautics Students' Society: Annual presentation ball, Cranfield. R.N.A.S. Lossiemouth: Air Day. International Radio Controlled Models Society: Annual contests, Birmingham. R.Ae.C. members' La Baule rally. Yorkshire Aeroplane Club: "At Home," Sherburn-in-Elmet. S.B.AC Farnborough display and exhibition. THE INDUSTRY Shock Mounts by Muffelite AWIDE range of anti-vibration and shock mounts is to be manufactured under licence from the Barry Corporation, Massachusetts, U.S.A., by Cementation (Muffelite), Ltd., of 39 Victoria Street, London, S.W.I. The anti-vibration mounts have been specially developed for use with airborne equipment of all types; the shock mounts are primarily intended for use in vehicles and ships, but also have certain aircraft applications. The British company is now tooling up to produce, by August, air-damped anti-vibration mounts and two types of shock mounts. In the meantime, American-made samples are available for test &T&& Section of air-damped mounting, showing synthetic rubber lje//ovvs surrounding the load-carrying spring. purposes. In the anti-vibration mounts non-linear springs are employed to maintain substantially constant natural frequencies over a wide load-range, and are stated to have an exceptionally low natural frequency of 7 to 9 c.p.s. Pneumatic damping is provided by a bellows made of cold-resistant synthetic or silicone rubber and having a small vent in its cap. Initially, the shock mounts manufactured here will be of the rubber-cushion type designed to absorb high impact-shocks as well as to isolate frequencies above 2,000 c.p.m. The devices, known as Barrymounts, comply with American specifications and also with corresponding British specifications. Drive Overload Protection A VAILABLE in a number of sizes to cover various ranges of L loadings, a series of torque-limiters has been developed by Fords (Finsbury), Ltd., of Kempston, Bedford. The Ford torque-limiter is a basically simple device having application in a wide variety of mechanisms which require provision for automatic and instantaneous disengagement of a drive when an overload is imposed. It can be used as a coupling in a shaft, combined with a pulley, sprocket or gear-wheel, or arranged to operate an electrical cut-out switch. A valuable feature of the device—and an essential one in certain applications—is that when the overload has been cleared and the machine re-started, it automatically resets itself with driving and driven elements in their original angular relationship. As an indication of dimensions and weights, the No. 10 limiter adjustable to transmit any required torque load between 100 and 400 lb in) is lO^in long, has a maximum diameter of 4£in, and weighs 12i lb. It has a lin shaft at one end and a lin socket at the other, both with standard key-ways. Marconi/I.A.L. Syrian Contract ACTING in collaboration, Marconi's Wireless Telegraph Co., • Ltd., and International Aeradio, Ltd., have secured "a sub stantial contract" for radio communication and direction-finding equipment from the Syrian Ministry of Defence. Obtained in the face of strong foreign competition, the con tract entails the planning and installation of a network which is to include automatic and manual V.H.F. D/F. stations (both mobile and static) with associated V.H.F. ground/air com munications facilities. A training school for Syrian Air Force personnel is also to be provided, the two companies being responsible for every phase, from the planning of buildings and the provision of technical equipment down to such ultimate details as exercise books for the students. The respective roles of Marconi's and I.A.L. are strictly com plementary, the former supplying the equipment and the latter providing the specialist staff and training facilities in Syria itself. In England, the Marconi College—which was the first radio school in the world—will also be used for the training of Syrian personnel. IN BRIEF Mr. W. Elson, M.B.E., M.I.Prod.E., A.F.R.Ae.S., informs us that he has resigned his position as production manager to Hunting Percival Aircraft, Ltd., after eight years' service. * * * From Emco Brass Mfg. Co., Ltd., Westwood, Margate, Kent, comes an 84-page illustrated catalogue of refuelling-equipment fittings for almost every imaginable application. The company are suppliers of such components to well-known manufacturers of refuellers, and to petroleum companies. * * * 0 Elliott Brothers (London), Ltd., announce the appointment of Mr. E. B. Schofield as area sales engineer for Lancashire, Cheshire and the West Riding of Yorkshire. He will specialize in the electrical measuring-instrument side of the company's business and will operate from the office at 66 Deansgate, Manchester, 3. * * * In a recent news-item reporting a visit to the U.S.A. and Canada by Mr. Clifford Shaw, of Shaw Processes, Ltd., a typo graphical error may have caused misunderstanding. The last sentence of the paragraph should have stated that Mr. Winnett Boyd was formally (not "formerly") appointed to represent Shaw Processes, Ltd. * * * At the annual dinner of the London Chapter of the Acheson Twenty-five Year Club, held recently at the Goring Hotel, Mr. G. A. Turner was elected president and Mr. F. Gordon Kay secretary for the ensuing year. Mr. Howard Acheson, chairman and managing director of Acheson Colloids, Ltd., referred to the fact that those present had been working for 25 years or more to develop the ideas of the founder of the company, Dr. Edward Goodrich Acheson, whose contribu tions to industry included "Carborun- , „ ...... dum," electric-furnace graphite and a wide range of colloidal dispersions. AIR. £. W. J. BARRJNGTON, who was appointed deputy service manager of Rotax, Ltd., last January, now becomes service manager. He will be responsible also for spares and repairs, and for investigations into customers' reports.
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