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Aviation History
1912
1912 - 0274.PDF
IfiiGHT) MARCH 23, 1912. including 4 ozs. of water, l£ ozs. of benzoline, and Joz. lubricating oil, and propeller and fixing brackets, 1 lb. 14J ozs. Best results (using one of Bonn's 16-in. diameter Chauviere pro pellers, illustrated March 16th issue), 3 mins. run; for 2 mins. the thrust was from 14 ozs. to 17 ozs., 1 min. being wasted in adjust ments, &c. In another test, a thrust of li lbs. was obtained for 1 Turn., i^Ifes. for 11 mins., the thrust falling off but little, remaining at 12 ozs. practically until the end. In another test, 20 sees, was spent in getting up to a thrust of I lb. The thrust then remained practically constant (not varying by more than an ounce the whole time) for 1 min. 20 sees, at 1 lb. An additional pressure of one-half in the benzoline reservoir had the effect of sending the thrust up something like half a pound and caused the tiny engine to make the propeller fairly hum in the air. The tests were only just of a preliminary rough-and-ready character, but they certainly considerably surpassed the most sanguine expecta tions, and we feel that we are deeply indebted to Mr. Groves. The building of the aeroplane to .carry the plant and the finding of a suitable day and ground for preliminary trials in actual free flight may take anything from six weeks to three months, as we have only a strictly limited amount of time to devote to the matter. Supposing that one chose to run the plant for all it was ^worth, there was every indication of its proving itself a successful helicopter, but no such end as that is in view. It will be seen, on referring to the illustration, that the generator is of the flash-boiler type, with water and benzoline reservoirs vertical, and lamp and boiler (both pressure fed) horizontal; engine, hori zontally opposed type ; two single-acting cylinders. Queries. F. WIEDMANN, Jun.—Intends to build a petrol-engined mono plane of 8 ft. span, and desires the following information: What h.p. should the motor be ? What diameter propeller ? And what material should be used, and what should be the length of the machine ? H. JONES.—Desires to know particulars as to wood required, &c, for making a small model of the Short monoplane recently illustrated in FLIGHT. Replies in Briei. W. M. BLOOMEKFIELD.—Its action would be very greatly diminished, even if not absolutely annulled. No, we do not. Personally we think it was due to a defect in the machine, but it will probably never be known. ® ® THE KITE AND MODEL AEROPLANE ASSOCIATION. NOTICES. have met with their approval. Therefore members should now get to work and experiment with such models and attempt to lift the prizes, which are £5 5^., £3, and £1. Kite Corps (Foot Section).—The members of this corps will meet at the Plumes Hotel, Park Royal, to-day, Saturday, at 2.30, for instruction under command of Major B. Baden-Powell. Any other members interested are invited to attend. W. H. AKEHURST, Hon. Sec. ® ® this year, and I see no reason why they should not be a success or be popular with the various London clubs. As regards provincial clubs—the chief difficulty is the travelling expenses—and also the time. I doubt whether the majority of clubs would grant members' expenses, and if not would the members be willing to pay their own? Perhaps an intermediate policy could be adopted by clubs and their members, each paying half. Contests might be arranged between London and provincial clubs when cheap trips are available—but I doubt whether a tournament between all the clubs is possible at the present moment. There are at least six clubs in and around London, why not start a London League of Aeromodellists, em bracing these clubs only. Some generously disposed person might then be persuaded to offer a cup for the winning club. Mr. J. W. Burghope (Assist. Hon. Sec. Brighton and District Aero Model Club) thinks the idea is certainly excellent but is afraid the putting it into practice would be very difficult [good things generally are]. The chief objection is of course expenses, very few of the average club members in the provinces could afford to run up to London for a day. [What, not even from Brighton for half a day ?] And again, models are not generally improved during a more or less lengthy train journey [this is news to us]. On the first score alone— expenses—I am afraid the idea will prove impossible to work." Mr. Malcolm B. Ross (Hon. Sec. Northern Branch Aero Models Assoc.) again thinks the idea is excellent, but that it could (so far as the London and provincial clubs are concerned) be followed only by a few of the clubs—at present existing in London—the one reason being that the club funds would not permit of it. [We do not see the necessity of regarding it from this point of view.] But let those clubs who are in a good way carry it out by all means ; and in the meantime why not inter-club contests between the home [London] clubs ? A challenge from the Ealing and District Ae.C. has been received and accepted. If more of this could be arranged why not let FLIGHT be the medium? Let the various clubs issue challenges (to be inserted in FLIGHT), then those wishing to meet the challengers have only to apply to the club secretaries for further particulars. [The one thing necessary for success is that they should be properly organised, and not arranged haphazard fashion, and that they should be held under a common and uniform set of rules.] Steam-Plant Tests. The following are a few particulars about the steam plant just completed for us as an especial favour by Mr. H. II. Groves, of Westcombe Park (set illustration):—Weight of engine, 3A ozs. ; of plant, excluding propeller, fuel, &c, I lb. 7 ozs. ; of complete plant, ® ® OFFICIAL Registration of Model Aeroplane Performances.—All applications for the next trials at Parkside, Sudbury, on the Paddington and District Aero Club ground on 1 April 13th, must be received by the hon. sec. not later than April 2nd on forms which can be had on application. The Roval Aero Club's Competition.—The rules submitted to the R.A.C. for a Hydro-Aeroplane competition for models weighing not less than \ lb., rising off and alighting on the water, ® ® FLIGHT PROGRESS OF ABOUT THE COUNTRY. NOTE.—Addresses, temporary or permanent, follow in each case the names of the clubs, where communications of our readers can be addressed direct to the Secretary. We would ask Club Secretaries in future to see that the notes regarding their Clubs reach the Editor of FLIGHT, 44, St. Martin's Lane, London, W.C., by first post Tuesday at latest. MODEL CLUBS. Aero- Models Assoc. (N.Branch) (Sec, MALCOLM B. ROSS 15, HIGHGATE AVENUE, N.). THE open distance event for the Mann set of parts took place on Saturday last. Result—1st, A. Houlberg, 1,442 ft. As Mr. Houlberg had previously carried off the honours on three occasions, he generously passed his prize over to R. L. Rogers, who came in second with 1,341 ft. Total distance of A. Houlberg's winning flight was estimated at 650 yards, and during that time attained heights of 160 ft. Other measured flights were : A. Houlberg, 1,226 ft. ; R. L. Rogers, 1,003 ft., 1,248 ft. ; A. O. Rogers, 1,290 ft.; H. E. Fletcher, 1,128 ft.; H. D. Murray, 1,054 ft. Mr. Fletcher's model on nine successive flights did absolutely straights of approx. 1,000 ft. H. Lingard and A. D. Trollope, from Palmer's Green, both did good flights, Trollope's machine surprising everyone by rising to at least 180 ft. E. R. Brown and R. G. Corder were both flying well. Others present with flying models, G. O. Partridge, O. W. Root, A. P. Hawgood, and S. Hindsley. All above figures were measured by Messrs. Pidsley and Wentker. Inter-club match on April 6th, at Finchley, with Palmer's Green Ae.C, and later at Ealing with the Ealing and District Ae.C. Flying to-day, Saturday, at Finchley. Birmingham Aero Club (Sees., R. COBHAM, G. H. WOOD, 8, FREDERICK ROAD, EDGBASTON). MEMBERS are now preparing their models for their visit to the Coventry Aeroplane Building Society, including several new models. Last week Mr. G. Wilde made an attempt on the club model gliding record, and beat the old record handsomely with a glide of 65 yards down the gliding hill. Last week-end was very unsuitable for model flying, but Mr. Trykle managed to obtain 78 sees. Much excitement was caused by a person in scout uniform firing with a carbine across the aerodrome, one of the bullets going through a farm door a mile away. The culprit was caught and handed over to the police after an exciting four-mile chase. Next monthly meeting at Bell Inn, Phillips Street, Monday, 274
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