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Aviation History
1920
1920 - 1115.PDF
OCTOBER 21, 1920 NOTE.—All communications should be addressed to the Model Editor. A stamp should be enclosed for a postal reply A "Record" Machine SEVERAL readers have written asking for details of the machine with which I recently created a duration record of 3 mins. 19 sees., and accordingly I show herewith drawings and particulars of it. The details are as full as will be necessary in order that readers may make a replica of it. The drawings contain all the necessary dimensions, and shojv the machine exactly as I made it, and with the planes in their flying position. The Main Plane.—The weight of this unit is exactly 1 oz., it is 6J ins. chord, and 30 ins. span. The Elevator.—This weighs £ oz., measuring 10J ins. span, and 2\ ins. chord. Eighteen gauge piano wire is used for it, And it is made in one continuous length. latter (£ in. strip) being used for each screw. The skeins are loosely attached. The centre of gravity of the machine is about \ in. forward of the main plane. Each screw in the flight previously referred to was wound 1,540, but the skeins had previously been wound to a lesser number, gradually approaching the maximum at each flight. This number should not be given to new rubber at first. . :.•,:.._-_ ..'•:. Model Club for Portsmouth MR. A. E. PURCHES, of 9, Chicester Road, North End,Portsmouth, is anxious to get into touch with any enthusiasts in the district with a view to forming a club. Replies to Correspondents B. R. (Shanklin) and W. P. (Shoebury).—We duly forwarded The Propellers.—The pair together weigh |jj of an oz., •this including shafts and the centre tin-straps. They are n J ins. diameter, with-a pitch angle of 40°. Their pitch is therefore 30.3 iris. The Propeller Bar.—This is slotted into the main spar in the manner shown, the hollow spar being blocked with a hardwood packing piece at the end to strengthen the joint. The Main Spar.—This is a hollow spar, 4 ft. of ins. long, 4 ins.' wide at its greatest width. It is a hollow spar, \J section, a thin covering strip of veneer being placed over the open edge •of the U to seal it. Its weight, inclusive of the propeller baiy braces, bearings, plane sockets and front elastic hooks, is iT% oz. The spar itself weighs barely i£ oz. The maximum depth of camber should be 2 ins. from the front or leading edge of the main plane, a drawing in section •of the plane ribs making the other dimensions clear. The -machine weighs 3| oz. without the rubber, six strands of the your letters. Write to H. H. G. at 41, Ormiston Road, London, W. J. B. C. (Natal).—Many thanks for your most interesting letter, which I hope to deal with later. You certainly seem to have done well, especially in view of the difficulties under which you have been labouring. O B. (Ottawa),—Glad you received the book O.K. Thanks also for the book and list you kindly sent. H. L. (Burnley).—Yes, write at any time you are in difficulty. M. R. (Cardiff).—We replied direct to your letter. A. E. P. (Portsmouth).—Many thanks for the photo., which I will endeavour to use at an early date. The machine certainly looks quite practical. A. H. (Bacup).—Make the motor 3 ft. y ins. long. Many thanks for the photos. The Paris-London-Paris Race IN our report on this race in last week's issue of FLIGHT the name of the Nieuport pilot was given as Lecointe. This ^ was a mistake on the part of a compositor, who consistently ^substituted Lecointe for the original name, the two names .looking very similar when written. Owing to pressure on • our time in connection with the Air Conference the mistake was not discovered in time to have the necessary corrections made. The name of the pilot who flew in the Paris-London- Paris race should have been given as Le Comte. •German Hangars for Belgium A MESSAGE from Brussels states that the Belgian air service is to receive a batch of 40 large metal hangars from Germany. They comprise some with three bays 22 metres wide, and some with two bays 33 metres wide, and capable of housing the largest machines. It is probable that these hangars will be erected at Liege-Dierset, Tirlemont, Schafien, Brussels-Haren and Nivelles. A Hun Secret Engine Store ACCORDING to the Freiheit, a number of new aeroplane motors, valued at over three million marks (-£13,300 approxi- mately), which were discovered the other day hidden in a mill near Gunzburg (Bavaria), have been confiscated by the Inter-Allied Control Commission.
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