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Aviation History
1941
1941 - 0571.PDF
6TH, 1941. \ LAYOUT : This three-quarter front view of the Douglas shows the high-midwing arrangement, the engine air intakes and oil-coolers and the optically flat panel in the bomb-aimer's compartment. 650 h.p. at 2,250 r.p.m. at 15,500ft. A service ceiling of 17,000ft. can be maintained on one engine alone by making the fullest use of the fully feathering Hamilton hydromatic constant-speed airscrews. Wing area is 465 sq. ft., and gross weight a shade over 15,000 lb. This gives a wing loading of 32.3 lb. per sq. ft.—quite low for military aircraft in these days—and a power loading of 8.35 lb. per h.p. Some 325 gallons of petrol and 30 gallons of oil are included in the useful load of 3,630 lb. Armament The fuselage-and all fixed surfaces are of stressed skin, all-metal construction, and are, of course, in the modern cantilever fashion. Rudder, elevators and ailerons are fabric-covered metal skeletons. Split flaps are fitted to the trailing edge of the wing, their span corresponding roughly to the diameter of the airscrew. „ The tricycle undercarriage arrangement gives excel- lent landing characteristics; in fact, pilots declare they can almost fly the Boston straight into the ground and then slam the brakes hard on. As ordered by the French, the armament was to have been made up of four 0.5m. fixed machine-guns in the nose and two free 0.303m. machine-guns for rear defence. Whether this will be altered or increased is not revealed. side^of the door handles form footholes and operation of the How many of these Bostons have we got? How rear handle (with the safety bar across) jettisons the whole door. FRONT LEG AND FRONT DOOR : A Flight copyright " Flight ** photograph. ENTRANCE AND EXIT : In an emergency the hinged covering over the pilot's cockpit can also be jettisoned. TAIL END : Boston's tail surfaces. The elevators and fins are fabric covered. The dihedral is very noticeable. •• night " photograph.
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