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Aviation History
1935
1935 - 1132.PDF
536 FLIGHT. MAY 16, 1935. THE G.A.L. "S.T.18" Length o.a. Wing span Height o.a. Iv.'ii 400 H.P. " \V.\sp JCMOXS" Dimensions. 42ft. 6in. 5Uft. 6in. 13ft. 6in. 12,97 «i 1S,K m 4,12 m Weights. Tare weight (equipped) ... 5,460 lb. 2 4S0 kg Disposable load 3,5401b. 160S kg Gross weight 0,0001b. 4 OSS kg Ratio gross wt.tare wt. ... = 1.65 Ten passengers Two pilots Luggage and mails Max. fuel <200 gals.) Max. oil (16 gals.) •Normal fuel (140 gals.) Normal oil (12 gals.) ... Wing loading Power loading Performance 1,650 lb. 330 lb. 367 lb. 1,540 lb. 155 1b. 1,077 lb. 1161b. 750 kg UO kg 167 kg 700 kg 70 kg 490 kg 53 kg 17.34 lb. sq. ft. (S4,6o kgjm*) 11.26 lb. 1,5,11 kg)lkp Max. speed at sea level Max. speed at 5,OOOft Cruising speed at sea level: On 75 per cent, power On 65 per cent, power Cruising speed at 5,000 ft.: On 75 per cent, power On 65 per cent, power Cruising speed at 9,700 ft.: On 75 per cent, power Cruising speed at 13,200 ft.: On 65 per cent, power Fuel consumption (75 per cent, power) Fuel consumption (65 per cent. power) Cruising range, 75 per cent, power : Normal capacity ... ... Max. capacity ... Cruising range, 65 per cent, power : Normal capacity Max. capacity Service ceiling Service ceiling, one engine ... ... •.. Max. rate of climb ... Landing speed (flaps down) 174 m.p.h. 187 m,p.h. 160 m.p.h. 153 m.p.h. 168 mp.h. 160 m.p.h. 176 m.p.h. 175 m.p.h. 280 km !h 3V1 km.h 257 km'li 246 km, h 270 km 1, 257 km h 2S3 kmh 2S2 ftja/ft 40 gals (182 l)'kr 35 gals (159 l)thr 616 miles (990 km) 880 miles (1 416 km) 612 miles (9S5 km) 1,000 miles (J 608 km) 24,000 ft. (7 310 m) 7,000 ft. (2 135 m) 1,400 ft./min. (427 rn'min) 65 m.p.h. (105 kmh) carried out bv Rumbolds. Heating of the cabin will bs from a muff around an exhaust pipe, and while the main ventilation will be under the control of the pilot, passen gers will have their individual ventilator controls. The total capacity of the passengers' cabin is 406 cu. ft. One long window will be built into each cabin wall, the only obstruction to the view being a few structural members which take up but a small part of the window space. A very substantial bulkhead separates the pilots' cock pit from the cabin. This bulkhead is a main structure member, and to it are secured the wing roots and the two wing-bracing struts, so that all the major loads are con centrated here. In the cockpit a very complete set of instruments will be installed, and the controls have been so arranged (the flying controls are, of course, in duplicate) that they can be reached by either pilot. This applies to engine controls and the controls for operating the wing flaps, the retract able undercarriage and the pitch of the airscrews, which, incidentally, will be Hamilton Standards. The engines which have been selected for the S.T.18 are Pratt and Whitney " Wasp Juniors." It is understood that no suitable British engine of exactly the power and characteristics required was available. Fuel is carried in the wings, the maximum capacity being 200 gallons. At a slight extra cost a gravity tank can be provided, and this, of course, can, if desired, be used for a high-octane fuel to be used during the take-off, switching over to plain petrol when the operational height has been reached. The retractable undercarriage is similar to those fitted on some of the smaller Monospar machines. Palmer hydraulic brakes with differential rudder bar control and parking ratchet will be fitted. The operation of the under carriage and the wing flaps will be by electro-hydraulic means, a hand pump being provided for use in case of an electrical breakdown. Forthcoming Events Club Secretaries and others are invited to send particulars of important fixtures for inclusion in this list. May 19. Deutsch de la Meurthe Cup, Aero Club de France. May 23. Jubilee Air Ball, Air League of the British Empire, at the Dorchester Hotel, London. May 25. Empire Air Day, Air League of the British Empire. May 29. Household Brigade Flying Club. Night-Flying Demonstration, Heston. May 30. Wilbur Wright Lecture, bv Mr. Donald W. Douglas, Science Museum, South Kensington. June 1. Brooklands '• At Home." june 1-15. Lisbon Aero Show. June 7-11. Whltsun Flight through Austria, Oesterreichischer Aero Club London Aeroplane Club. Garden Party, Hatfield. June ,'une 8. 8. Official opening and garden party, Witney and Oxford Aero Club. June 15. R.A.F. Flying Club Annual Display, Hatfield. June 15. Bristol and Wessex Aeroplane Club, S.B.A.C. Challenge Cup, Whitchurch. June 16. Scottish Flying Club Display, Renfrew, June 29. Royal Air Force Display, Hendon. July 1, S.B.A.C. Display, Hendon. July 6 Royal Air Force Fly-past before H.M. the King at buxford. July 7. Douze Heures D'Angers, Aero Club de France. July 13. Opening of Leicester Municipal Airport. July 20. Opening of Brighton, Hove and Worthing Municipal Airport, Shorebam. July 20-21. Coupe Armand Esders, Aero Club de France. July 28. Private Owners' Garden Party, Ratcliffe, Leicester. Aug. 17. Round the Isle of Wight Air Race and Portsmouth Air Trophy. Aug. 24-25. Third International Flying Meeting, Lympne. Aug. 24-25. Cinque Ports Club. International Flying Meeting an 1 Wakefield Cup Race. Aug. 24-30. Raduno del Littorlo, Rome. Reale Aero Club d'ltalia. Sept 4-18. Junglraujoch Concours, Aero Club de Suisse Sept. 6-7. King's Cup Air Race. Sept. 14, Cinque Ports Club. Folkestone Aero Trophy Race. Sept. 15. Gordon Bennett Balloon Race, Warsaw. Oct. 12-28. International Aircraft Exhibition, Milan.
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