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Aviation History
1936
1936 - 0912.PDF
APRIL 9' J9&. FLIGHT. $7 POSITIVE CONTROL The Arens System described : Wide Application on Modern Aircraft These self-explanatory sketches illustrate various features of the Arens control system. THE problem of remote control which presents itself at one time or another to every aircraft designer is solved to a great extent by a positive push-pull system like that produced by Arens Controls, Ltd. This system, although approved for all controls on aircraft, is mostly used for the operation of throttles, mixture controls, petrol cocks, orientable landing lights and variable-pitch air screws. The De Havilland type airscrew is fitted as standard with Arens equipment. Structurally, the control consists of an outer tube, either rigid or flexible, which, if rigid, is first bent to the desired form. An inner member, comprising a closely wound spring having only a few thousandths of an inch clearance, is then in troduced into the tube. Within this is a cable, to each end of which is attached a rigid sliding member, the cable being drawn into tension when the unit is assembled. In this manner the push is transmitted by the inner spring member and the pull is taken by the cable. When a short control is needed it is made as a unit in the Arens works and supplied ready for fitting. Should a long run be required, however (these have been supplied, for air craft, up to 26ft.), the most convenient method is for the outer tube to be made in sections which can be easily manipu lated into the aircraft structure and joined'by the unions illus trated. When the outer tube has been positioned, the inner member is passed through and the cable secured by a special cable grip type end, a mechanical joint requiring no soldering thus being made. Lubricant is provided in the form of thin graphite grease which is retained between the coils of the spring. The inner components may be removed and examined in compliance with A.I.D. requirements. When the system is used for operating a lever a special method of articulating the tube precludes the provision of linkage. In this case a short section of flexible tube is intro duced into the outer casing, permitting the tube whicli carries the sliding member to rise and fall to the arc movement. A New Bolo? TT is announced that from Monday, April 6, the Air Member *• for Research and Development, the Joint Directorate of Scientific Research and Technical Development and the rele vant Secretariat Division will be transferred from Adastral House to Savoy Hill House, Savoy Hill, Strand, London, W.C.2. The other directorates of this department will remain in their present accommodation. In future all enquiries in person to the transferred staff should be made to Savoy Hill House. Official correspondence should, however, continue to be addressed to the Secretary, Air Ministry, Adastral House, Kingsway. V A New Jointing Material W ELL known as makers of " Vellumoid " petrol- and oil- resisting sheet jointing, Chillcots, Ltd., 1-4, Trinity Street, Borough, London, S.E.i, have recently marketed a new jointing material known as "Fibracork." This consists of high-quality cork sheeting sandwiched be tween two layers of special petrol- and oil-resisting jointing; the cork is thus given extra strength and is prevented from disintegrating. Intended specially for use in places where a cushioning effect and minimisation of vibration are required, "Fibracork" should find a number of uses in aircraft work, for which it is approved by the Air Ministry. It is made in thicknesses varying from -^in. to |in. R.Ae.S. Officers for 1936-7 THE Royal Aeronautical Society states that, as a result of the Council ballot announced at the annual general meeting on March 30, the new' Council for 1936-37 will be as follows:— President, Lt. Col. J. T. C. Moore-Brabazon; past-president, Mr. C. R. Fairey; vice-presidents, Mr. H. E. Wimperis, Maj. T. M. Barlow. Council: Capt. P. D. Acland, Maj. T. M. Barlow, Maj. J. S Buchanan, Maj. G. P. Bulman, H. Roxbee Cox, A. H. R. Fedden, A. Gouge, Prof. F. T. Hill, Prof. G. T. R. Hill, Capt. A. G. Lamplugh, W. O. Manning, Maj. R. H. Mavo, R. J. Mitchell, F. Handley Page, Dr. N. A. V. Piercy, Prof. A. J. Sutton Pippard, Lord Sempill, O. E. Simmonds, C. C. Walker, H. E Wimperis. Honorary treasurer, Maj. D. H. Kennedy; solicitor, Lawrence A. Lingfield; honorary librarian, J. E. Hodgson; honorory accountant, A. N. D. Smith. HOMEWARD BOUND : C. J. Melrose, with his Heston Phoenix (Gipsy Six) photographed shortly before leaving for Australia. He had an official send-off from Heston last Saturday, Mr. C. F. G. McCann, Agent General for South Australia, and Mr. Pemberton-Billing (who is Mr. Melrose's uncle), being among the well-wishers. The fact that an extremely adverse weather report thereupon caused a postponement came as rather an anti-climax. Actually, Mr. Melrose left on Monday. He is proceeding Australia- wards in easy stages, and on arrival1 will use the Phoenix for charter work ; he will also represent the makers, the Heston Aircraft.Co. Ltd. (Flight photograph).
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