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Aviation History
1947
1947 - 0711.PDF
MAY 8TH, 1947 FLIGHT 415 Though hardly comparable in performance with the latestBritish and American types, the S.M.95 may have a useful future. Italian Transports; Useful Designs by S.I.A.L-Marchetti '"THREE types of transport aircraft, all with wooden wings and welded steel-tube fuselages, are offered by S.I.A.I.-Marchetti of Sesto Calende, Italy. Formerly known as Savoia-Marchetti this concern achieved consider- able success before the war with the S.M. 73, 75 and 83 transports, the second type being standard equipment on certain Italian internal, European and overseas lines. Unlike its three-engined predecessors, the S.M. 95, an example of which was brought to Farnborough for study during 1945, is a four-engined type, having a normal dis- posable load of 17,600 lb, which, as Guidonia tests have proved, may readily be increased to 24,250 lb. Powered with Alfa 131 R.C. 14/50 engines, the S.M. 95 carries 38 passengers and on 55 per cent power cruises at 177 m.p.h. at 13,700ft. The service ceiling on three engines is 19,650ft. Range is quoted as 1,585 miles and the take- off distance as 460 yards. Comparable in many respects with the D.H. Dove, the S.M. 102 seats eight passengers and two pilots. It will be seen that the wing is of high aspect ratio ; this, in conjunc- tion with a moderate wing loading, high-lift slotted flaps and constant-speed feathering airscrews, reflects favourably on climb, ceiling and low-speed characteristics. The engines of the S.M. 102 are American-built Rangers, each giving 520 h.p. at take-off. At 55 per cent of the maximum output the machine cruises at 173 m.p.h. at 19,650 ft, and on one engine has a sendee ceiling of 16,660ft. The third type (S.M. 101) seats two pilots and four pas- sengers and is fitted with a single Walter Bora engine of 235 h.p., though it is planned to instal a unit of over 300•• h.p. The makers admit that the flying characteristics with The S.M.102 (top) end S.M.101 as seen by a Flight artist. the present Walter engine are "not very brilliant," but claim that the high aspect ratio (9.11) permits good cruis- ing performance and low fuel consumption. In view of the high power loading a constant-speed airscrew is used. OLYMPIA SAILPLANE T\/TANUFACTURING and marketing of the Olympia sailplaneiV* has now been taken over from Chilton Aircraft by Elliots of Newbury, Ltd., who inform us that the 25 sailplanes whichconstitute the home market orders will now be delivered by the end of May, Estimated cost of the Olyrnpia is /6oo. LT. BRIDGE'S CRASH TDEPORTS in the daily Press have mentioned fire as a con-J-V tributory cause of the Meteor crash in which Lt. J. Bridge, the Gloster test pilot, lost his life, but the makers of the air-craft are emphatic that neither before nor after the accident was there any outbreak of fire. The facts, according toGloster's are that on the approach a gust of wind caused a wing to drop and when the throttles were opened the engineon this wing failed to respond. The other engine, however, opened up, thereby aggravating the position. FORTHCOMING EVENTS May 8th.—Royal Aeronautical Sac. : " The Development of the Goblin Engine," E. S. Moult, B.Sc. . May 16th to 19th.—Royal Netherlands Aero Club. Aerial rally at Ypenburg. The Hague. May 10th.—Air League of the British Empire (Portsmouth) : Air Display at Portsmouth Airport. May 18th.—^uthern Area Model Flying Championship. A.S.T. airfield, Hamblefwants. 2 p.m.—6 p.m. May 16th to 24th.—Coupe Montana for jet propelled aircraft. May 24th—Cannes Air Rally. May 24th and 26th.—Isle of Man Air Races. Ronaldsway Airport. May 29th.—Royal Aeronautical Soc. : Thirty-fifth Wilbur Wright Memorial Lecture "The Development of All-wing Aircraft." To be read by J. K. Northrop, July 9th to 30th.—Air League of British Empire. Blackpool (Squire; Gate) Flying displays with R.A.F. support on 9th, 16th and 23rd. Sept. 9th to 12th.—S.B.A.C. Exhibition and Display.
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