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Aviation History
1953
1953 - 0165.PDF
FLIGHT, 6 February 1953 HERE AND THERE 163 necessitating construction of a new proto type, was decided upon between 1948 and 1950, before the production order was placed. When Mr. Langford-Holt observed that this was not the first type of aircraft to be so affected, Mr. Sandys said that there had been disappointing results in the case of one or two naval aircraft, and he was examining the matter with the First Lord of the Admiralty. Icing Tips AN international course on aircraft icing problems is to be held at the University of Michigan from March 30th to April 3rd. It has been sponsored by the university's department of aeronautical engineering, in co-operation with the U.S.A.F. Thirteen experts will lecture on icing phenomena and de-icing systems. PROVOST T. Mk 1 basic trainers (Alvis Leonides) are now coming steadily off the Percival pro duction line for delivery to the R.A.F. These two examples are seen at Luton, with the imposing new control-tower in the background. "Trouble with this army co-operation caper is they don't know where to stop." For Export A LIST recently issued by the Society of British Aircraft Constructors shows some of the British-built aircraft now available for export. The most interesting name is that of the Canberra, and other jet aircraft are the Vampire and Meteor fighters and trainers, Venom day, night, and naval fighters, and the N.F.11. Piston-engined trainers include the Balliol and Provost, and the Pembroke and Devon "flying classrooms." Three helicopters are men tioned, the Sycamore, S-51 and S-55, as also are the Shackleton and the Mk 1 Firefly. The Pembroke and the Bristol 170 Freighter, soon to be joined by the Beverley freighter, complete the list. Braking Jets THE ability of the airscrew to be used in reverse pitch has endowed it with one of its few advantages over the jet. Now it is learned that Oskar Lundberg, a Swede living in America, has patented a device for reversing jet-thrust. Hinged flaps close the orifice of the jet-pipe, and at the same time channels open in the sides of the pipe and divert the blast forward. It is sug gested that the device could be used for braking both on landing and in the air. A jet thrust-reversing device was under development in this country several years ago, and the French are also reported to have experimented with the idea on the Mistral fighter. Arctic Navigation Award THE Thomas L. Thurlow award for 1952 has been presented by the American Insti tute of Navigation to S/L. K. Greenway, R.C.A.F., for his work in connection with navigation in arctic regions. S/L. Green- way, who has been attached to the Arctic MINIATURE S-55: This convincing petrol-engined model is held by its maker, Mr. A. Hodgson, of St. Mary Bourne, near Andover. Diameter of the main rotor is 60in and the all-up weight (now being reduced to improve performance) is 35 oz. An explanation of the unconventional torque-reaction system is given in the accompanying paragraph, "Rotary Ingenuity." section of the Canadian Defence Research Board for the past four years, was jointly responsible with Mr. J. W. Cox of that Board for the invention of the "twilight- computor." This instrument, perfected in 1951, is of great value in showing the posi tion of the arctic twilight zones, in which it is impossible to obtain a visible reference to a heavenly body for directional-gyro use. The computor has since been adopted by the R.A.F. and the R.C.A.F. Lecturer on Loan NOW in America is Mr. James Hodge, M.A., A.M.I.Mech.E., A.F.R.Ae.S., Mem.A.S.M.E., senior consulting en gineer to Power Jets (Research and Development), Ltd. The firm has given him leave to go to Columbia University, New York, for four months, as visit ing lecturer on gas turbines. Mr. Hodge, who was a member of the original Whittle team, is also a lec turer at the School of Gas Turbine Technology. Mr. James Hodge. Photographic Map-making THE fourth meeting of the Photogram- metric Society will be held at 6.30 p.m. today, February 6th, at the Royal Photo graphic Society, 16, Princes Gate, London, S.W.7, when a paper will be read by Mr. R. W. Fish, M.Sc., A.R.C.S., entitled Lens and Film Resolution. The Photo- grammetric Society has only recently been formed, and its activities are likely to be of interest to all concerned with aerial survey ing. The hon. secretary is Dr. E. A. Miskin. the Photogrammetric Society, University College London, Gower Street, London, W.C.i. Rotary Ingenuity THE model of the S-55 helicopter shown at left is powered by a high- revving 5 c.c. rotary engine, the crankcase of which is connected to the main rotor and the crankshaft to the small airscrew seen above it. The resultant contra-rota- tion eliminates torque reaction on the fuse lage, thus obviating the necessity of a tail rotor. At the same time the relatively low r.p.m. required for the main rotor is obtained without the complication of gearing. Lift is obtained from both rotor and airscrew. Fuel is supplied from an annular tank which fits round the main bearing and revolves integrally with the crankcase. The rotor blades are so hinged as to permit autorotation when the supply of fuel is exhausted. D
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