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Aviation History
1915
1915 - 0839.PDF
OCTOBER 29, 1915. t/yggg ALL communications in connection with this section should be addressed to the Model Editor, '« FLIGHT," 44, St. Martin's Lane, London, VV.C. Correspondents are requested to write on one side of the paper only. A Triple-Screw Monoplane. IN connection with Mr. Johnson's recent article on multiple-screw models we have received the following sketch from a Scottish reader, Mr. P. Ritchie, of a triple-screw model which he has recently built. Owing to being very busy, he has not yet had a favourable oppor tunity to test it in full flight, but we hope when he is able to do so h- will let us know the result. " One point of interest about the model," he writes, " is that each of the tractors works on a single skein of elastic, while the Mr. P. Ritchie's triple-screw model. pusher is titled to a duplex gear. The chief dimensions are : Span, 42 ins. ; chord, 7 ins. ; fuselage, 36 ins. The wings are made of strip birch covered with proofed silk, and the fuselage is made of l_J section silver spruce." Some S.W. Aero Club Models. From Mr. J. W. Reid, the Hon. Sec. of the South-Western Aero Club, we have received the following :— " I have noticed that photographs of models in flight are very few and far between, 10 I am fending some, taken by myself, of MO models of this club—Mr. llowsi's (H3) and mine (R4). A J-plate camera was used. The group shows Mr. P. W. Peel (our late Secretary, and now in the R.F.C.) and Mr. K. T. Howse winding up his own model. " As regards the models themselves, they are very much alike, although mine has a flexible rear edge to the main plane. They are both the same length, but Mr. Howie's has a 47-in. span, while mine measures 44 ins. Mr. Howse's has a 14-in. propeller, driven by two skeins of elastic of six strands each ; mine, a 12-in. propeller, driven by two skeins of five strands each, the duration in each ca«e being alxiut 3S 40 fees. Both model* r.o.g. "Note the movement of the right wing in the view of my model. Thete was no movement visible to the naked eye while the model was flying." Paper Models. V.R.B. sends the following notes on this subject : — "Seeing the notes in * FLIGHT' of October 8th and 15th, r* paper models, I thought 1 would give a brief description of a model 1 have recently constructed. " Having obtained good flights from hand launched models with the main plane or planes in front, I decided to make one fitted with a chassis and wheels and landing apparatus. I have managed to make one which without any assistance will ri-e from the ground under its own power and fly with fairly good stability. " The machine is a tractor biplane. "The main plants consist of very thin framework of wood and note-paper, covered with tissue paper. They are tingle surfaced, and have a span of 9 ins. and 8J ins. respectively and a gap of 14 ins. and a chord of 14 ins. The tail plane is in the shape of a semi-circle with a diameter of 3f ins., and is also covered with tissue paper. The motor consists of a thin paper tubr with the elastic inside. The propeller is 3 in', diameter, and is driven by 10 strands of j'lj-in. square elastic, obtained from an clastic stocking. Hat elastic can also be used, but it is not so good. " The wheels are made of small discs of Miff note-paper |-in. diameter, with a small bead through the centre, which is stuck in pUce by seccotine. Thi« kind of wheel is very satisfactory in every way. The wheels are fixed on by means of small pint with the ends cut off, while a light wire frame forms the chassis. " Model aeroplanes made in this way have a very good appear ance, besides being able to fly for short distances, and can be made to resemble their large prototype quite closely. I have now turned my attention more or less to paper model water-planet, which I hope before long will be able to rise from the water in a bath." Three snapshots secured by Mr. J. W. Reid, the Hon. Sec.'of the South-Western Aero Club. On the left, Mr. R. T. Howse Is seen winding up his model, assisted by Mr. P. W. Peel, late Hon. Sec. and now in the R.F.C On the right the model is seen in flight. In the centre is Mr. Reid's r.o.g. model well up. 839
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