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Aviation History
1934
1934 - 0104.PDF
FLIGHT, FEBRUARY 1, 1934 The interior parts of the engine are made with such a degree ol accuracyand finish that complete overhaul is desirable only after 500-hour intervals. Experience with the new engine has shown that after the first 500 hours thewear is so slight that it is likely that this period may be safely increased. Quietness and Comfort.—Due to the low tip speed of the geared airscrew,and to the smooth exhaust from seven high-speed small cylinders, the noise per horse power of " Niagara " is very small. The almost perfect inherentbalance of the seven-cylinder radial results in the practical elimination of vibration. . Memorandum for long-distance flights THE Air Ministry has issued a Memorandum for pilotsindulging in long-distance nights, and a few points out of it are worth putting into print in this journal. The Air Ministry, when obtaining permission for pilotsto fly over certain countries, will include in their notifica- tion to the appropriate authorities in the countries con-cerned the route which will be followed and the approximate time-table. Any change in the route ortime must be notified by the pilot himself to those interested. Arri ra.1 and departure messages of pilots flyingalong regular air routes will be sent free of charge by the aeronautical services of European countries which aremembers of the I.C.A.N. In the following countries special arrangements are required, the brackets enclose the officialsto be notified. Malta (Air Officer Commanding R.A.F. Mediterranean ; Rafos Malta) ; Tunis and Tripoli (OfficerCommanding Air Station or British Consul ; Tel.: Tunis 2974; Telegram: Navirienne Tunis); Libya (" Notte,"H.M. Consul, Benghazi) ; Lake Tchad (Fort Lamay) ; Egypt (High Commissioner, Cairo. Prodrome Cairo) ;Sudan (Governor, Wali Haifa) ; Uganda (Public Works Dept., Kampala) ; Kenya (Customs Mombasa, CustomsNairobi, Customs Kisumu); Tanganyika Territory (Director of Civil Aviation, Aviation Dar-es-Salaam) ; Nyasaland(Chief Transport Officer, Zomba) ; Northern Rhodesia (Registrar of Aircraft, Livingstone) ; Southern Rhodesia(Customs Salisbury or Customs Bulawayo) ; Union of South Africa (Secretary, Civil Aviation, Air Directorate,Roberts Heights, Pretoria. Defair, Roberts Heights) ; Palestine and Transjordan (A.O.C., R.A.F., Jerusalem) ;Iraq (Iraqui Controller of Civil Aviation) ; Persian Gulf (A.O.C., R.A.F., Iraq) ; India and Burma (AerodromeKarachi, Grammatist Akyab, Gavenger Mirgaladon, Sub- division Victoria Point) ; Siam (British Consul, Bangkok) ;Malaya (Commissioner of Police, Johore, Bahru. Executive Engineer, Alor Star ; Secretary, Civil Aviation Office, Sin-gapore) ; East Indies (Aerodrome Authorities) ; Australia (Aviat, Melbourne) ; Hong Kong (Director of Air Ser-vices) ; Borneo (British Resident, Brunsi). It is important that the registration letters of the aircraft and the nameof the pilot be included in every message. Air attack on locusts EQUIPPED with special apparatus attached to thewings, a three-engined British airliner is to be employed in Rhodesia to spread a poison barrage before swarms oflocusts as they pass over the country, in an affort to destroy them before they settle. Mechanism devised to SOME DETAILS : Piston and connecting rod assembly onthe left. On the right an airscrew shaft and reduction gear, showing the new hardened driving drum. 80-H.P. "CATARACT" The " Cataract " has the same reduction gear as the " Niagara," but hassemi-open valve-gear. The crankshaft, connecting-rods and internal gear are generally the same as those of the *' Niagara."Inter-cylinder deflectors only are fitted, as this engine is intended for inexpensive uncowled installations. Hand-starting gear is provided. Apetrol pump may be fitted if required. 70-H.P. "CASCADE" The " Cascade " is a direct-drive version of the " Cataract," and aims atproviding a smooth, simple and light power plant at the lowest possible price. It also has the four-pole magnetos, but hand-starting gear is suppliedas an extra. A petrol pump can be fitted if required. s B m spread a fine curtain of sodium arsenite powder has beensent out from England to Broken Hill, where it will be fitted to the aeroplane for a series of flights in searchof the deadly insect armies. Mr. R. F. Caspareuthus, who at one time held the record for the flight from England toCape Town, is the pilot detailed by Imperial Airways for the experiment. His machine is a de HavillandHercules " biplane of the fleet that began the Cape air mail service and is now superseded by the faster four-engined Armstrong Whitworth " Atalanta " craft. Im- mediately locusts are reported the machine will be takenup to locate them; once the swarm is found the pilot will steer the machine along its front, spraying poison intothe air in the hope that the locusts will fly into it. Three hundred pounds of the poison powder can be carried onthe machine and, because the powder is fine enough to remain suspended in the air for some time, there is groundfor hope that the swarms will largely be destroyed. A step in the right direction THE Belfast Corporation and the Belfast Harbour Com-missioners have agreed that no pylons or wires in con- nection with electrical supply will be erected in thedanger zone " area of the aerodrome site on reclaimed land at Sydenham. A children's party at Stag Lane ON Saturday, January 20, a party of 268 boys andgirls between the ages of 4 and 12—children of employees of the de Havilland Aircraft Co., Ltd., was held underthe auspices of the D.H. Sport:; Club in the club premises at Stag Lane Aerodrome, with Mr. F. Radford acting asM.C. From 4 p.m. until 8.30 p.m. a very full programme was enjoyed by all the guests. Proceedings commencedwith a jolly tea arranged by Mr. G. F. Streeter in his usual competent manner, ibly assisted by 25 lady helpersconvened by Mrs. A. T. Groombridge. Paper caps and favours were distributed. After tea, the D.H. AmateurDramatic Society presented an hour of non-stop enter- tainment, which the children enjoyed immensely. At7 o'clock toys and gifts were distributed to all the youngsters, and Mrs. F. T. Hearle, wife of the ManagingDirector, presented a fairy doll and a pedal car to the winners in the Lucky Draw. Mrs. Hearle accepted a hand-some bouquet from a little girl who performed her task very daintily. Even his own family found it difficult torecognise Mr. A. T. Groombridge, Manager of the Aircraft works, disguised as Santa Claus, but one young gentlemanwas heard to remark to his neighbour: " It only seems a few weeks since last Christmas, doesn't it?" ^^^^
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