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Aviation History
1926
1926 - 0290.PDF
APRIL 29, 1926 TWO-SEATER LIGHT AEROPLANE COMPETITION, 1926 (Under the Competition Rules of the Royal Aero Club) THE Supplementary Regulations for the Two-Seater Light'Plane Competition, to be held at Lympne from September 10 to 18, 1926, have now been issued. The competition, whichis being held under the competition rules of the Royal Aero Club for prizes totalling ^5,000, offered by the proprietors ofthe Daily Mail, is a purely British one. Following are the regulations :—- SUPPLEMENTARY REGULATIONS I 1. Organisation.—The competition will be conducted bythe Royal Aero Club, under the Competition Rules of the Royal Aero Club. 2. Light Aeroplane.—The competition is open to anyaeroplane, the weight of the engine of which does not exceed 170 lbs. NOTE :—The weight of the engine includes carburettor andinduction system, complete ignition equipment, air screw hub and fastenings, exhaust pipes (if any) and radiator, pipes andwater (if any). 3. Two-Seater Dual Control.—The aeroplane must be atwo-seater fitted with dual control, and an air-speed indicator must be visible from either seat. The heads of the pilot andpassenger must not be enclosed. The seating and control must be capable of accommodating a normal person of 6 ft.height. A cockpit width of not less than 24 ins., to be measured atthe seat level, must be provided for both pilot and passenger. In the case of a side-by-side machine the cockpit widthmust not be less than 44 ins., to be measured at the seat level. In the case of a machine with staggered seats, a width of notless than 24 ins. must be provided for both pilot and passenger, to be measured at the seat level. The top of the control column should be free to move in afore and aft direction through a distance of not less than 15 ins. The distance between the seats of the pilot andpassenger must not exceed 5 ft. 4. British Manufacture.—The aeroplane, including theengine and ignition system, must have been designed and constructed in the British Empire. 5. Competitors.—Entrants and pilots must be Britishsubjects. 6. I uel.—The ingredients of the fuels must be commerciallyobtainable in bulk in this country. The fuel used by all engines in the competition shall besubstantially the same as that used in the respective type tests for Certificates of Airworthiness, and shall be within5 per cent, of the specific gravity of such fuel. The unit of fuel is a unit of weight.All refuelling in the competition must be done at Lympne Aerodrome under the supervision of the Official Measurer. All fuel weighed into the tank from the start of the com-petition will be counted for consumption, and all testing or running-up of the engine must be carried out on this fuel.Fuel taken by the Official Measurer from the tank will be credited. 7. Load to be Carried.—The load to be carried, exclusive offuel and oil, must not be less than 340 lbs., which figure includes the weight of the pilot and passenger (if carried).If there is no passenger the balance of the 340 lbs. must be carried in the spare seat. Additional weight may be carriedanywhere in the aeroplane as useful load provided that the total weight of the aeroplane does not exceed the figureallowed in the Certificate of Airworthiness. The carrying of a passenger is optional except in theEliminating Test " B," in which case it is not permitted. 8. Certificates of Airworthiness.—A certificate of airworthi-ness for the aeroplane must be obtained and produced to the Royal Aero Club one week before the opening date of thecompetition. 9. Air Navigation Regulations.—Competitors must complywith the Air Navigation Regulations in force, subject to any concessions which may be made by the Air Ministry for thiscompetition. 10. Accommodation.—Free accommodation for competingaeroplanes will be available at Lympne Aerodrome from Tuesday, September 7, 1926. 11. Identification.—Each aeroplane will be allotted anumber, which must be painted in black on a white surface on each side of the fuselage and on the lower surface of eachof the lower main planes. This number must be as large as the surface permits. Government registration marks arenot necessary for this competition. 12. Plying Time.—The competition will be open each dayat 8 a.m. and will close at 8 p.m. Competitors will not be observed or timed after that hour. The stewards may prohibit any flying in the competitionif, in their opinion, the weather conditions justify such action. The stewards may extend the flying time in the event ofany loss of time on account of unfavourable weather. 13. Change of Pilots.—The changing of pilots is permitted,but any change must be notified beforehand and the weight adjusted. 14. Repairs.—The same aeroplane and engine must be usedthroughout the competition, but repairs and certain replace- ments as scheduled will be allowed. Schedule of replacements permitted :—En give Farts.—Petrol and oil filters ; propellers of the same design, construction and dimensions ; sparkingplugs and ignition wires ; valves and springs ; ignition systems. Aeroplane Parts.—Wheels ; tyres ; tail skids ; wing tipskids. Repairs and replacements of a minor nature, with theprevious consent of the stewards. Any competitor discarding part of or otherwise altering theaeroplane during the competition, so that it differs in any way from that which was presented to the officials in the firstplace, will be disqualified. 15. Official Notices.—The posting of decisions and instruc-tions on the Official Notice Board on and after September 9, 1926, constitutes an official notification to all competitors,who are responsible for acquainting themselves with such decisions and instructions. 16. Entries.—The entry fee is /10. This fee, together withthe entry form, must be received by the Royal Aero Club not later than June 30, 1926. Late entries will be receivedup to 12 noon on July 31, 1926. Late entry fee, £30. The Royal Aero Club, in the interests of safety, reservesthe right to refuse any entries and/or prohibit the flight in the competition of any competitor if it considers the flightwould be dangerous. 17 ELIMINATING TESTS The following eliminating tests A, B, C, and D must becarried out in this order and must be passed to the satisfac- tion of the officials before taking part in the competitionproper. Aeroplanes must be presented to the officials, fully erected,for the eliminating tests at 10 a.m. on Friday, September 10, 1926. Aeroplanes not so presented will be debarred fromtaking part in the competition. The eliminating tests will commence at 10 a.m. on Friday,September 10, 1926, and will be continued on the following day. These tests must be completed by 8 p.m. on Saturday.September 11, 1926. Aeroplanes not having done so wili be debarred from taking part in the competition. A. Dismantling, Housing, and Re-erecting.—For this test theaeroplane must be presented to the officials fully erected. It must then be dismantled or folded in such a manner asto permit of its being completely transported in one journey without the use of any extraneous tackle, over a distance ofnot more than 25 yards, and placed in a shed 10 ft. in width and 10 ft. in height. It must then be taken outside the shedand re-erected. Two persons only will be allowed to handle the aeroplanethroughout this test, and the time occupied must not exceed one hour. No special devices will be allowed unless carried as partof the equipment of the aeroplane in flight during the compe- tition. Such equipment will not be weighed or consideredas part of the useful load. B.—Demonstration of Dual Control.—This test will consistof two separate flights of not less than five minutes' duration each, within sight of the aerodrome, at the termination ofeach of which one figure of eight must be flown within the boundary of the aerodrome. The pilot must be alone and occupy alternately the two seatsin the aeroplane. C.—Getting Off.—This test will consist of a take off, startingfrom rest and flying in a straight line over two barriers 25 ft. high and placed 25 yards apart. The distance from thestarting pont to the first barrier will be 300 yards. This distance is based on a wind not exceeding 6 miles per hour. 258
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