North
American BC-1A Probably not at Freeman Field during the evaluation phase, but used as the Base Commander's personal plane from 1942 to 1945 Powered by FreeWebsiteTranslation |
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Freeman Air Museum FF0028 |
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Source | Disposition |
39-798/856 North American BC-1A http://home.att.net/~jbaugher/1938.html |
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Aircraft: Harvard II (AT-6C), The North American NA-16-1A or The North American NA-16-3). Aircraft I.D.: C-FMGZ (2557). Design: North American Aviation Inc. Manufacturer: North American Aviation Inc., Los Angeles Municipal Airport, Inglewood, California, U.S.A. Manufacture Date: 30 June 1941. Type: Two-seat general-purposes military monoplane. Wings: Low-wing cantilever monoplane. Wing section varies from N.A.C.A. 2215 to 2209. In five sections, consisting of centre-section, two outer-sections and two wing-tips. Centre-section of parallel chord and thickness, outer-sections have back-swept leading-edge and straight trailing-edge and taper in thickness. Single-spar structure with spaced ribs and covered with a stressed aluminum- alloy skin. Dynamically balanced ailerons, with aluminum-alloy frames and fabric covering. Split trailing-edge flaps inside ailerons and under fuselage. Fuselage: Welded chrome-molybdenum steel-tube framework with fittings integrally welded. Fuselage constructed in four sections, engine-mounting, control-section, tail-section and monocoque bottom aft of wing. All sections bolted together. Side covering in form of fabric-covered aluminum-alloy frames bolted to fuselage. Cowling all metal and quickly removable. Tail Unit: Cantilever tail-plane and fin of metal, with sheet covering. Rudder and elevators have light-alloy frames, with fabric covering. Right and left sides of tail-plane and elevators are interchangeable. Metal surfaces are removable by externally-accessible bolts for internal inspection. Non-reversible trimming tabs on elevators. Fixed tab, adjustable of ground only, on rudder. Undercarriage: Divided type. Consists of two cantilever oleo struts, with the upper ends built into the ends of the centre-section by sleeves held by four bolts. Right and left units interchangeable. Each unit enclosed in duralumin fairing, which does not enclose the streamline wheel, so that it is accessible for brake adjustment or removal. Hydraulically-operated wheel-brakes. Oleo-sprung steerable tail-wheel. Power Plant: Pratt & Whitney 600 H.P. Radial Engine, Nine Cylinder. One Pratt & Whitney ``Wasp'' S3H1 nine-cylinder radial air-cooled engine, developing 550 h.p. at 5,000 ft. (1,525 m.) on welded chrome-molybdenum steel-tube mounting. N.A.C.A. cowling. Fuel tanks (two), of welded aluminum alloy, in centre-section, one on each side of fuselage. Normal fuel capacity 104 U.S. gallons. Oil tank (9.5 U.S. gallons) in engine compartment and detachable with it. Alternative engines are the Pratt & Whitney ``Wasp'' R-1340-S1H1, Pratt & Whitney ``Wasp-Junior'' R-985 or the Wright ``Whirlwind'' R-975-E3. Accommodation: Tandem cockpits, with sliding enclosures. Dual controls, with rear control quickly removable. Equipment may be installed to suit machine for training, fighting or light bombing. Provision made for installation of two fixed guns firing forward through airscrew and one gun on a movable mounting in back cockpit, bomb-rack below fuselage, full wireless equipment, etc. Dimensions: Span 42 ft. (12.8 m.), Length 27 ft. 5 3/16 in. (8.38 m.), Height 8 ft. 9 in. (2.67 m.), Wing area 248 sq. ft. (23 sq. m.). Weight and Loadings: Weight empty 3,340 lbs. (1,515 kg.), Crew 380 lbs. (172.5 kg.), Fuel and oil 695 lbs. (315 kg.), Armament 141 lbs. (64 kg.), Weight loaded 4,556 lbs. (2,065 kg.), Wing loading 185 lbs./sq. ft. (90 kg./sq. m.), Power loading 8.3 lbs./h.p. (3.71 kg./h.p). Performance: Speed at sea level 200 m.p.h. (324 km.h.), Cruising speed at 12,000 ft. (3,660 m.) 185 m.p.h. (298 km.h). Landing speed 61 m.p.h. (98 km.h.). Maximum rate of climb 1,800 ft./min. (590 m./min.), Service ceiling 26,000 ft. (7,930 m.). Cruising range 680 miles (1,102 km.). The Harvard II (AT-6C) Lineage (From Janes' 1939): Production of the BT-9 type for the U.S. Army Air Corps started in 1936 with a contract for 95 and this series was again ordered in 1937 with a contract for 248. It is also in use by the U.S. Navy (with Pratt & Whitney ``Wasp'' engine), known as the NJ-1 trainer. Released for export as the NA-16, deliveries have been made to may foreign governments, among which were France, Australia, Argentina, Sweden, Brazil, Honduras and Japan. During 1938 and 1939 an advanced design known as the BC-1 was produced and 200 were delivered to the U.S. Army Air Corps. Released for export in the NA-16 series, contracts for machines of this type were placed with the Company by the British and Canadian Governments. These machines have been given the type name of ``Harvard.'' In 1939, the U.S. Army Air Corps ordered an additional 200 of the advanced BC-1A type, and the U.S. Navy a number of the same type but designated as SNJ-1. In all, over 1,600 of the NA-16 Trainer type have been produced. A new design of Observation aero plane which was built from the viewpoint of the observer's requirements, was delivered to the U.S. Army Air Corps in 1938 and 1939 and designated as the O-47A. This model was released for export in 1939 and is known as the NA- 25. A repeat order was received from the U.S. Army Air Corps in 1939 for the O-47B type A twin-engine Attack Bomber was produced in 1939 and is available for export as the NA-40 series. About the Manufacturer (From Jane's 1939): North American Aviation Inc. was incorporated in 1928 and has been solely engaged in the design and manufacture of military aircraft since 1934. The manufacturing facilities were moved from Dundalk, Maryland, to the West Coast in 1936 and a new modern production plant was erected on the Los Angeles Municipal Airport where the firm has a site of approximately 24 acres. Originally the plant covered an area of 172,000 sq. ft. but it has since been increased to approximately 500,000 sq. ft. The firm maintains one of the most complete laboratories for aircraft production tests and for research in materials. |
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