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Aviation History
1909
1909 - 0739.PDF
NOVEMBER 20, 1909. ALEXANDER £1,000 PRIZE FOR BRITISH FLIGHT MOTOR. IT will be remembered that at the meeting of the Aerial Leagae on September 30th, Mr. Alexander offered a prize of ^1,000 for the first British-built engine of medium horse-power which fulfilled certain conditions, the competition to be held under the joint auspices of the Royal A.C., the Aeronautical Society of Great Britain, the Aero Club of the U.K., and the Aerial League. The or their authorised representative, a»d by the results to which such rules and regulations may lead. Committee's Decision Final.—In the event of any point arising under, or which is not covered by, these regulations, the Committee shall have power to decide upon the same and its decision shall be final and shall ipso facto become a regulation of the trials. regulations follows: have now been drawn up, and are as General Regulations- The tests will be carried out at the National Physical Laboratory under the sole control of the Advisory Committee. Machine of British Manufacture.—The machine to be of British manufacture. Horse-power.—The motor to be designed to give 35 b.h.p. The machine will be required to reach this b.h.p. on a preliminary run. Description.-—The maker to supply a detailed description and drawings, together with a statement of the principal features of the machine. The drawings to show the engine, radiator, tanks, &c., fixed to a known type of aeroplane, so that the length of the con- necting pipes can be determined and impossible combinations for trial purposes guarded against. Limit of weight.—Motors weighing more than 245 lbs., that is, 7 lbs. per b.h.p., will not be admitted for competition. For the purposes of this clause the weight shall be taken to include the weight of the motor itself with crank-case and supporting arms, and all parts necessary for ordinary running, also the cooling apparatus with all accessories (clauses 18, 19). It will not include the supply of cooling water, petrol and lubricating oil, or the containing vessels for these. Couplings to be Provided.—To enable the motor to be coupled up to a dynamo for the determination of its efficiency, and also for the application of the required end thrust or pull, the motor-shaft is to be provided with two half-couplings to the design shown in Fig. 1. Mounting for Purposes of Test,—To facilitate the erection of the machine on the testing apparatus, the motor, with radiator, must be mounted so that it can be bolted to the pair of adjustable testing-rails shown in Fig. 2. Patents.—Each competitor to take any steps he may desire to protect his machine by patent. I, ••s jg 1 iTfr ~TMotor Shalt I •4S Mild Steel Flanges. [J [ _^ fig. 1.—Dimensions of Coupling. Interpretation of Regulations.—The interpretation of these regulations or of any to be hereafter issued shall rest entirely with the Committee, which may at its discretion waive, alter, add to, or omit from any or all of them from time to time. It any disputes shall arise in connection with these regulations or with any that are hereafter issued, or with the trial, the decision of the Committee shall be final and binding. [Clauses follow defining that no responsibility rests with the Committee in regard to damage to engine or appurtenances. Any damage done by the maker or his representative must be paid for by the entrant. Right of action is waived against the Committee and Judges, &c, for any damage during or arising out of the tests. Makers must insure their employees against damage by accident.] Conditions of Test.—The main points which will be con- sidered in the comparison of motors admitted for competition will be:— A. Weight and consumption of petrel per b.h.p. B. Reliability and steadiness of running. C. Wear of working parts. D. Security against fire. E. Air resistance offered by the motor and accessories. 'O =01 B Section through Fixed Raits. Movable Rails. Fig. 2.—Arrangement of Support for Motor Testing. Least height *T (Zenlre of Motor sh«»ft above ufsper surface of Movable Rait * 16*13 inches. Price.—The price to be stated, and the first option for the purchase of the machine at the prioe at which it is entered to rest with the Advisory Committee until the report on the tests is issued. Acceptance of Regulations.—Every competitor and his repre- sentatives, mechanics, or other employees shall be considered to be acquainted with these regulations and by entering undertakes to abide without dispute by all the conditions therein contained, and by any regulations which may be hereafter issued by the Committee A, Weight and Consumption of Petrol p:r B.H.P. In the Total Wtight, for purposes of comparison, will be reckoned:— The weight of the motor itself with crank-case and supporting arms and all parts necessary for ordinary running, as for instance—the carburettor and regulator, the automatic lubricating apparatus, the ignition, together with the necessary accumulators, coils, &c, suffi- cient for the time of the test, the connecting tubes for the Water 74*
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