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Aviation History
1918
1918 - 0387.PDF
APRIL 4, 1918. MODELS. QF0CHT A Useful Glider. THOSE who are thinking of making a glider, with which a great deal of sport and amusement can be obtained, will be inter- ested in the following account of a glider built by Mr. S. W. Marsland, of Manchester. In sending the drawing and details he says :— " The ideas are my own entirely, and taking in all the advantages and disadvantages, the machine has been a decided success as a glider. " The main particulars and dimensions are given in the drawing, but I think a brief description would make things a little clearer. " The main planes are made of seasoned osiers, tapering from £ in. to about -j\ in. They are two ft. long with a chord of one ft., slightly cambered and single covered with doped fabric. The joints are screwed and bound with linen tape for strength. " The fuselage consists of a single piece of deal wood £ in. thick, and tapering from a maximum of three ins. to a minimum of 1S- ins. in depth. " The undercarriage consists of two streamlined struts running from the fuselage, to which Uiey are screwed, to a wooden axle ; underneath tins is a J-iu, steel axle, both being bound together with tape. The wheels are solid ; and have a rubber tyre ,] in. diameter. They are bushed with brass tubing .*., in. diameter, so that the tube projects about J in. on either side of the wheel. " The till planes and fin are made of wood J in. thick. The elevators are of thin sheet iron riveted to the tail plane. " The total weight of the machine in flying trim is 4$ lbs. "The following are the leading characteristics of the glider :— Dihedral Angle Span of Main Planes Chord of Main Planes Span of Tail Planes Chord of Tail Planes with elevator. Angle of Incidence of Main Planes. Angle of Incidence of Tail Planes. C. of G. of Machine Weight complete About 4 deg. 2 ft. 6J ins. 12 ins. 9J ins, •' . 6 ins 71 ,. -r"rj*-' 9h deg. Parallel to Top of body. i£ ins. in front of cen- tre of Lift of Planes. 4-1 lbs. C. G. * li in. front of centre of lift of planes. gle ^of incidence ^° ft
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