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Aviation History
1934
1934 - 1195.PDF
FLIGHT, November 15, JQ34 TIQ7 AFT REVIEWED is, Described and Illustrated 9 $ for this change in policy may hr pointed out: the monoplane, and par- ticularly the cantilever monoplane, with its rigid, unbraced wing, requires no trueing-up during service, as does a bi- plane. The second reason is connected with undercarriage drag. If a retract- able undercarriage is used, the low-wing monoplane lends itself admirably to hous- ing the wheels. Metal construction has become univer- sal for military aircraft, but wood has recently regained much of its popularity for civil aeroplanes, particularly for the smaller types. When it comes to power plants, it is seen that among the military types twenty have air-cooled engines and twelve have water-cooled. Among the civil types there are no water-cooled en- gines at all. The radial and in-line en gines are fairly evenly divided, with fifteen of the former and eleven of the latter. ARMSTRONG WHITWORTH Sir W. G. Armstrong Whitworth Aircraft, Ltd., is the full title of this firm, which is one of the group presided over by Sir John D. Siddeley, C.B.E. The other firms in the group are A. V. Roe & Co., Ltd., Armstrong-Siddeley Motors, Ltd., and Air Service Training, Ltd. The firm specialises in all-metal aircraft. ONE of the first British firms tospecialise in the all-metal construc- tion of aircraft was Sir W. G. ArmstrongW'hitworth Aircraft, Ltd. The firm has produced a wide range of aircraft types,mostly military, and at the present time has under construction several newmodels for the British Air Ministry. These will, in many cases, incorporatequite new structural features. A num- ber of civil types have also been pro-duced, of which the best known is, per- haps, the Atalanta class of four-enginedmonoplane used by Imperial Airways. Among recent military types it is pos-sible to refer here to two only: the A.W. type 35 " Scimitar," and theAAV.19. The " Scimitar " is a high-performance single-seater fighter, which can be fittedwith the Siddeley 640 h.p. "Panther" engine or the 725 h.p. "Tiger." Themachine is a single-bay unequal span biplane, and two of the features whichare essential in a machine of this type have been given very particular atten-tion : field of vision and manoeuvr- ability. In its standard form of construction,the " Scimitar " has a fuselage built of high-grade steel, and wings with mainspars of high tensile steel strip. Alter- natively, the fuselage can be supplied asa welded tubular structure, and the wings with spruce spars and ribs. An undercarriage of the " split axle "type is fitted, the semi low-pressure tvres being partlv enclosed in "spats." Dif- j INDEX TO 1 MAKES 1 The various makes of aircraft \ \ are dealt with in the succeed- \ ; ing pages as follows: I Airspeed i Armstrong Whitworth. . ; Avro 1 Blackburn | Boulton and Paul 1 Bristol . . ! De Havilland . . 1 Fairey . . j General Aircraft 1 Gloster . . j Handley Page . . I Hawk (see Phillips and 1 Powis). j Hawker I Klemm . . I Monospar (see General 1 Aircraft). I Percival. . ; Phillips and Powis I Saro ! Short ; Spartan . . — j Page j 1200 i 1197 i 1201 j 1199 I 1205 i 1211 \ 1198 : 1203 ; 1212 ) 1213 j 1207 ; 1213 | 1214 ; 1209 I 1208 i 1209 1 1206 1 1202 j i Supermarine (see Vickers) j • Vickers . . \ Westland 1204 1 1210 | ferentially controlled wheel brakes oper- ated by pedals attached to the rudder bar are fitted. The Siddeley engine is resiliency mounted on rubber pads. It is enclosed in a new type of engine cowling, which consists of an inner and an outer ring. The inner ring embraces the cylinder heads in sur'i a way as to restrain the air to flow through the cylinder (inning. The outer ring is of the large chord type, and gives a very low air drag. The armament of the " Scimitar " jon- sists of two 0.303 Vickers guns and four 20 11). bombs under the starboard main plane. Exceptional field of vision is also a feature of the A.W. 10, which is a general- purpose military machine of the biplane A.W. "SCIMITAR" 040 h.p. Siddeley " Panther VII " Type : Single seater Fighter. Length Wing span : Upper Lower Wing area Max. speed at Time to Service ceiling Range 25 ft. Oin. (7,62 m) ... 33ft. Oin. 10,06m) 27 ft. 3 in. (fi,30m) 261.4 sq. ft. (24,28 ml) 14,000 ft. [4 270 m) 225 m.p.h. (362 km/h) 10.680 ft. (6 000 m), 11.5 mins. 31,fiOOft. (9 630 m) 498 miles (800 km) With 76 galls. (345 Hires) of fuel
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