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Aviation History
1924
1924 - 0526.PDF
9BB LIGHT 'PLANE AND GLIDER NOTES Those wishing to get in touch wi h o hers interested in matters relating to gliding and the construction of gliders are invited to write to the Editor of FLIGHT, who will be pleased to publish such communications on this page, in order to bring together those who would like to co-operate, either in forming gliding clubs or in private collaboration. MOST of the British aircraft firms are now busily at work either completing their machines for the Lympne competitions or actually testing them out in the few cases where the machines have already been completed. In the former category are the Air Navigation and Engineering Co. of Addlestone, whose machine is being flown by Mr. " Jimmy " James. We understand that this machine is fitted with an Anzani engine, and that on the flights already carried out it has been doing very well. During last week we paid a visit to the West of England, and were glad to find one of the three Bristol machines entered undergoing its pre liminary flying tests. On the day of our visit to Filton the Bristol, which is, of course, fitted with a Bristol " Cherub " engine, was first flown by Mr. Uwins solo, then by Capt. Barnwell himself solo, and finally both went up together. The machine certainly flies extremely well, and the " Cherub " has a splendid note as the machine passes overhead. The last we saw of the Bristol was a fine side-slip landing into the Filton aerodrome. The controllability appeared to be all that one could ask, and Mr. Uwins repeatedly stalled the machine, which came out after a very small drop. At the moment we are not at liberty to publish a detailed description, but we can assure our readers that the three Bristols incorporate some very interesting constructional features. The type will be known as the Bristol " Brownie." * * * AT the Coliseum works at Bristol we found two Parnall machines nearing completion, and these also will be found to contain much that is unusual, and which represents Mr. Bolas"s idea of what a light 'plane should be, not only r t:———— : : ».- zteumtx v ' I an|p i j~~;. ^z ^-^^ ' • .- |i Front, three-quarter front, and three-quarter rear views of the Bristol " Cherub " engine, which has now successfully passed the Air Ministry type-tests. 526 AUGUST 21, 1924 in order to gain marks in the competition, but also for practical use afterwards. At present the successors to the " Pixie " have not been given a type name. * * * AT Yeovil three Westland machines are coming along nicely, although at present but two have been entered.- As mentioned in these notes last week, one is a biplane and the other a monoplane, and both show interesting features, constructional as well as aerodynamic. We hope shortly to be able to publish illustrated articles dealing with the machines. One type, incidentally, will be known as the Westland '' Wood Pigeon " and the other as the Westland " Widgeon." * * * ANOTHER two entries have, we understand, been received by the Royal Aero Club for the forthcoming light 'plane trials at Lympne. These both come from the H. G. Hawker Engineering Co. of Kingston, and bring the total so far entered up to 15. It is known that at least another three machines will be entered, and probably more, so that it looks as if the figure of entries may, as we suggested last week, reach the 20 mark, * * * LAST week we mentioned briefly that the Bristol " Cherub " engine was reported to have passed its Air Ministry type-tests successfully, and that the power was 32 -6 b.h.p. at 3,200 r.p.m. We have now had this information confirmed, and are able to supply a few additional facts and figures concerning the tests, as well as the three views of the engine published herewith. Other views were first and exclusively published in FLIGHT of May 29, 1924. A production type "Cherub," of the ungeared type and of 1,095 c.c. capacity, was submitted for tests, and completed these on July 26, 1924. The rated power of this engine is 24 b.h.p. at 2,500 r.p.m. and a maximum of 32-6 b.h.p. at 3,200 r.p.m. The B.M.E.P. is 121 lbs./sq. in. A 25-hours' endurance test was completed, and included one 10-hours' non-stop test. It is worthy of note that the
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