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Aviation History
1944
1944 - 0863.PDF
APRIL 27TH, 1944 ing Attitudes tt% Blohm and Voss BV-139 Reconnaissance Bomber. ORIGINALLY designated the Ha 139, the Blohm and Voss Bv 139 is notable for being powered by four Junkers Jumo 205 compression-ignition two-stroke engines. This engine is of the opposed piston type and is rated at 510 h.p. Designed before the war as a transatlantic civil type, it was readily converted for reconnaissance, mine-laying and sea-ambulance duties, and has a top speed of 200 m.p.h. Two fixed forward- firing guns and one or more movable guns firing aft comprise its limited armament, and it carries bombs or mines externally. The cranked low-wing has parallel edges and angular raked tips, the engines being three-quarters underslung. The canti lever floats are attached beneath the inner nacelles at the " elbows," and the slim, tapered fuselage is circular in section. The raised strut-braced tailplane, with twin fins and rudders, is of distinctive design. Dimensions: Span 96ft. gin., length 64ft. 6in., height 15ft. 9m., wing area 1,399 sq. ft. FIRST introduced as a commercial aircraft, the Grumman Goose amphibian is powered by two 450 h.p. Pratt and Whitney Wasp Junior engines and has a top speed of 200 m.p.h. It is in service with the R.A.F. and R.C.A.F. as the Goose, the U.S.A.A.F. as the OA-9, the U.S. Navy and Coast Guard as the JRF-5 and 6B according to equipment. Normally it carries no armament, its duties including air-sea rescue, coastal reconnaissance, and "general utility." Recognition points include high wings of moderate aspect- ratio, tapering mostly on the trailing edge to rounded tips. Twin radial engines of comparatively large diameter in short, t ipered nacelles centred on the leading edge and close to the ull; fixed, braced wing floats; strut-braced "wing-nut tailplane set part way up the single fin; curved trailing edge to rudder; short, tubby hull. Dimensions: Span 49ft., length 38ft. 4m., height 12ft., wing area 375 sq. ft. Grumman Goose General Utility Amphibian.
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