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Aviation History
1931
1931 - 0754.PDF
FLIGHT, JULY 17, 1931 THE INDUSTRY Some Hermes TestimonialsTHE Cirrus-Hermes Engineering Co., Ltd., have re- ceived two letters, one Irom Capt. C. D. Barnard, and onefrom Mr. E. K. Kayson, concerning the performance of "Hermes" engine?. Capt. Barnard says:—"My aerialtour of the country has now completed three months' regular flying, and we have travelled practically all overGreat Britain holding a pageant in a different town every- day. I have with me six machines of different types, threeof which are fitted with Hermes Mark II engines. The first machine fitted witli this type, a three-seater Spartan,G-EBJS, has now completed 300 hr. without any trouble. I thought you would be interested to know this, as I con-sider it most wonderful service considering the extremely hard wear and tear the work entails on an engine. Thethree engines are standing up to the work wonderfully well and have given absolutely no trouble whatsoever." Mr. Kayson writes:—" I thought that it might interestyou to know that my Hermes-Avian (Mod. II) is behaving in the same exemplary manner as it did as a Hermes I onmy trip from Buenos Aires to Pernambuco. I have now flown it some considerable number of hours and have hadno trouble whatsoever. The service given by your firm compares favourably with that of the best car manufac-turers, and that, combined with a very excellent product, convinces me that I have got the most satisfactory andreliable aero engine yet made. I am taking the machine to Egypt in September, where I have my business, and haveno doubt that it will continue to clock up to the good marks it has won in the past." Petro-Flex Tubing WE have received from Hobdell, Way & Co., Ltd., of20, St. Clare Street, London, E.I, a booklet concerning their " Petro-Flex " tubing. This, as no doubt most ofour readers are aware, is a light-weight tubing for the con- veyance of petrol and oil, specially designed as a substi-tute for steel and copper tubing, for use in aircraft and other conditions where vibration is set up. In additionto possessing the advantage of a full measure of flexibility, " Petro-Flex " is impervious to the action of petrol,benzole and all the hydrocarbon oils, is strong and durable, and provides unimpaired flow. The booklet re-ferred to above, besides describing the construction of " Petro-Flex," tells all about its uses, fitting, sizes, etc. The Physical Properties of Nickel-IronTHE Research and Development Department of the Mond Nickel Co., Ltd., of Millbank, London, S.W.I, haveissued a brochure on the Physical Properties of Nickel- Iron and Some Related Alloys. Of special interest toaero engine manufacturers is a section devoted to the " Invar " strut piston. This application of " Invar "aims to overcome the troublesome excessive expansion of light aluminium alloy pistons. Copies of this brochurewill be supplied, free of charge, on application to the above department of the Mond Nickel Co. Csunter 2-Stroke on ViewTHE Gaunter two-stroke radial air-cooled engine, which was described and illustrated in our issue of October 24,1930, is one of the exhibits at Self ridges this week, and readers who are interested in this new development shouldmake a point of inspecting the engine there. Many other aviation items of interest are on view, and altogether avisit this week is well worth while. Mr. Dowty makes a Move DOUBTLESS many of our readers will remember thearticles on various problems connected with aircraft under- carriages which Mr. G. H. Dowty has written for TheAircraft Engineer (Monthly Technical Supplement to FLIGHT). Mr. Dowry has now left the Gloster AircraftCo., Ltd., and has established a firm of his own, under the title Aircraft Components Company, with offices at 4,Lloyd's Avenue, London, E.C.3, Telephone Royal 4595. Mr. Dowty will manufacture and market several of hispatented undercarriage specialities, and anyone interested is asked to communicate with him at above address.Your Holiday Clothes THE holiday season being at hand, many of us areno doubt looking over our wardrobe. Attention could, therefore, be drawn to Gieves' super flannels, as supplied tothe Royal Navy ; all requirements for yachting, such as Gieves' 5-oz. yachting caps, badges. Burgee brooches andother yachting jewellery, apart from a carefully-selected range of summer suitings and other items for holiday wearobtainable from Gieves, Ltd., 21, Old Bond Street, W.I. IMPORTS AND EXPORTS AEROPLANES, airships, balloons and parts thereof (notseparately before 1910). For 1910 and 1911 figures see FLIGHT for January 25 1919 For 1912 and 1913, see FLIGHT for January 17, 1914For 1914, see FLIGHT for January 15,1915, and so on yearly the figures for 1930 being given in FLIGHT, January 16, 1931 Imports. 1930. 1931. £ £ Jan. ...2,987 7,965Feb. ...2,460 3,303 Mar. ... 744 5,615April ...2,959 2,216 May 11,706 1,964June 15,029 6,780 Exports. Re-exports 1930. 1931. 1930. 1931 £ £ £ 1 147,935 142,596 — 1074 226,049 110,587 1,000 1*293 156,098 83,088 802 3441 213,390 213,401 79 '53ft 158,460 275,382 2,550 198 252,443 78,298 1,060 36! 35,885 27,843 1,154,375 903,352 5,491 6,897 PUBLICATIONS RECEIVED Technical Notes of the U.S. National Advisory Commit-tee for Aeronautics: No. 866, Torsion in Box Wings. By J. B. Wheatley. February, 1931. No. 368, The Variationin Pressure in the Cabin of an Airplane in Flight. By M. N. Gough. March, 1981. National Advisory Committee for Aeronautics, Washington, D.C., U.S.A. A Short Course in Elementary Meteorology, By W. H.Pick, B.Sc, F.C.P. Air Ministry: Meteorological Office. M.O. 247. H.M. Stationery Office, Kingsway, London,W.C.2. Price 2s. 6d. net. Journal of the Royal Aero- nautical Society. May, 1931. No. 245. The Royal Aero-nautical Society, 7, Albemarle Street, London, W.I. Price 3s. 6d. The Story of the Airship. By Hugh Allen. TheGoodyear Tyre and Rubber Co. (Great Britain), Ltd., Wolverhampton. The Gauge. May, 1931. J. J. Haber-shon and Sons, Ltd., Holmes Mills, Rotherham. Department of Overseas Trade : Economic Conditions inBelgium in 1930. Report by N. S. Reyntiens, O.B.E. H.M. Stationery Office, Kingsway, London, W.C.2. Price4s. net. Hints for Commercial Visitors to El Salvador. Ref.No. C3551. Department of Overseas Trade, 35, Old Queen Street, London, S.W.I. AERONAUTICAL PATENT SPECIFICATIONS (Abbreviations: Cyl. = cylinder; i.e. -= internal combustion; m. = motors The numbers in brackets are those under which the Specification will be printed and abridged, etc.) Applied for in 1930 Published July 16, 1931 1,583. FAIREY AVIATION CO., LTD., and F. H. ORDIDGE. Gun-jnounting&for use on aircraft. (350,890.) y,150. FAIREY AVIATION CO.. LTD., and M. T- O. LOBELLE. Controlsurfaces. (351,061.) 9,512. A. H. R. FEDDEN, L. F. G. BUTLER, and BRISTOL AEROPLANE CO.LTD. Radial-cyl. i.e. engines. (351,087.) 10,284. WISEMAN, LTD., and W. P. SILI.INCE. Fuel-pump mechanism forDiesel or compression-ignition engines. (351,112.) 10,442. Sir F. H. ROYCE. Regulating means for i.e. engines for aircraft(351,117.) " 12,080. IRVING AIK CHUTE CO., INC. Parachute packs. (351,147.)13,948. S. LINDEO.CKT. Apparatus for tanking aircraft in the air. (351,172.) 26,931. J. G. NAVARRO and M. A. NAVARKO. Construction of aeroplanecabins. (351,332.) FLIGHT, The Aircraft Engineer and Airships. 36, GREAT QUEEN STREET, KINGSWAY, W.C.2. Telephone (2 lines): Holborn, 3211. Holborn, 1884. Telegraphic address: Truditur, Westcent, London. SUBSCRIPTION RATES POST FREE UNITED KINGDOMs. d. 3 Months 8 36 16 6 12 ,, 33 0 UNITED STATES OTHER COUNTRIES*s. d. 3 Months $2-20 3 Months 8 96 „ $4-40 6 „ 17 6 12 „ $8-75 12 „ 35 0 • Foreign subscriptions must be remitted in British currency. Cheques and Post Office Orders should be made payableto the Proprietors of " FLIGHT," 36, Great Queen Street,Kingsway, W.C.2, and crossed " Westminster Bank." Should any difficulty be experienced in procuring" FLIGHT " from local newsvendors, intending readers canobtain each issue direct from the Publishing Office, by for- warding remittance as above. 708
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