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Aviation History
1946
1946 - 0828.PDF
4*8 FLIGHT APRIL 25TH, 1940 The flat vee-screen and canopy of the T.23/43 is designed to accommodate folding amber filters for " day-night " training. Thereis a sliding hood for entry on each side of the front cockpit, with an upward sliding door for the rear seat. light former ribs at necessary in-tervals. Stringers are used only at the root to provide walkwaystrengthening. The split trailing- edge flaps are in three sections, andrun from aileron to aileron, and they are pneumatically operated.There is a gate • in the control system to pre-vent the flaps from beingfully retracted •when1 "up " is PERCIVAL TRAINER (CONTD.) selected during overshoot ac-tion. The ailerons, elevators and rudder are all fabric-covered._ The fuselage can be considered to be in two sections. That forwardof the rear bulkhead is almost rec- tangular in section, and is built upas a partially braced structure with light skin, while the aft portion isof conventional semi-monocoque design. Wing attachments arecarried - on two built-up girders which also take the seats and con-trol structure, so making up a com- plete assembly. The entire cabin top, including the wind-screen, is also made as a complete unit in order to main- tain the necessary guide alignment. From a point aft ofthe screen structure this unit can be jettisoned as a whole, so that, at the will of the instructor, all three members PERCIVAL T.I3|43 D.H. GIPSY QUEEN 51 SUPERCHARGED ENGINE DIMENSIONS Spao 46ft Oin Length • 31ft 3in Trick .' |2ft Oin Wing area 305 sq ft All-up weight 3,850 1b of the crew may be free to leavethe aircraft in an emergency. To deal with the effects, .of any acci-dental ground inversion there is a '' crash pylon'' aft of the frontseats. Entry is made through a sliding hood on each side of the for-ward part of the cabin, with an upward sliding door on the port sidefor access to the rear seat. The screen panels are of flat safetyglass, with direct-vision windows on each side and windscreenwipers, Control System Full dual control is, of course,fitted, with the rudder and elevator tab and engine controlsproperly arranged on the left side of each pilot. Dual brake leversare provided, with the usual dif- ferential rudder action, and thereis an override lever on the instruc- tor's column to enable him to makethe pupil's brake lever temporarily inoperative. The instruments in-clude a standard blind-flying panel. The whole cabin is ventilated andheated. The engine carries vacuum and compressor pumps as well as^a generator, and there is an external startingbattery plug. The main engine cowlings are hinged along the top line. Forty gallons of fuel are carried in two crash-proof tankslying between the spars at the wing roots, where they can be reached through detachable panels on the under-surfao^of the wing. The four-gallon oil tank is in the port leading edge, with an oil cooler at its inboard end. PERFORMANCE Maximum speed (s.!.) „ (6,800ft) ... Maximum continuous cruising speed 's.'.) Maximum continuous cruising speed (5,400ft) Maximum economical speed (s.l.) Maximum economical speed (12,200ft) ... Stalling speed (flaps down) Maximum rate of climb (s.l.) Maximum rate of climb (5,000ft) ... Service ceiling (approx.) Run to clear 50ft screen (from grass) Duration (maximum economical cruising at 5,000ft) 3.72 153 m.p.h, 171 m.p.h. . 147 m.p.h. 160 m.p.h. I2» m.p.h. 154 m.p.h. 51 m.p.h.1,070 ft./min 960ft|min 19,000ft 370 yd hr (517 miles) FORTHCOMING EVENTS April 26th.—Institute of Transport. Lunch and address by Lord Winster. Connaught Rooms. 12.45 p.m. April 27th.—S.L.A.E. Helicopter Lecture and Film : Manson House, Portland Place, W.I. Speaker : Mr. Raoul Hafner. 3.30 p.m. May 2nd.—*R.AeS. Graduates' and Students' Section ; " Transport Aircraft," by F. Radcliffe. May 5th.—S.M.A.E., Midland Competition (petrol models) for the Sir John Shelley Cup. May 8th.—R.AeS. Reading and Dist. Branch: "The Evolution of Fighter Tactics," by Sqn. Ldr. J. Nelson (Miles Aircraft, Ltd.). May 24th.—Cambridge U.A.S. 21st Anniversary dinner, University Arms Hotel. * The Library, 4 Hamilton Place, W.I.
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