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Aviation History
1939
1939 - 1342.PDF
MAY 4, T939 FLIGHT. 453 HANDLEY PAGE HAMPDEN (Two Bristol Pegasus XVIII Engines*) Dimensions. Length of fuselage ... Max. width of fuselage Max. height of fuselage Mean wing chord (aerodynamic) Root chord Tip chord Aspect ratio ... Tailplane span Total wing area ... Weights. Tare weight ... Useful load Gross weight (normal) Distribution of load :— Fuel Oil Crew (4, with 5 parachutes) Service load (including crew) Max. fuel Max. oil Performance (with Pegasus XVIII) Max. speed at 18,750 lb. gross weight: 265 m.p.h. (427 kmk.) at 15,500ft. (4 730 m.) Cruising speed at normal r.p.m. : 217 m.p.h. (350 kmjk.) at 15,000ft. (4 580 H ) Economical cruising speed : 167 m.p.h. (269 kmjh.) at 15,000ft. (4 580 m.) Service ceiling Time to 15,000ft. (4,580 m.) ... „ Sea I#vel rate of climb Take-off run to clear 50ft. barrier .„ Landing run, clearing 50ft. barrier Landing speed 53ft. 4in. (16,25 m.) 3ft. (0.92 m.) 8ft. 8in. (2,65 m.) lift. 4in. (3,46 m.) 16ft. 3in. (4,96 m.) 3ft lOin. (1,17 m.) 6.58 21ft. 2in. (6,45 m.) 668 sq. ft. (62,1 «.*) 11,780 1b. (5 354 As.) 6,976 lb. (3 171 kg.) 18,756 lb. (8 525 kg.) 3,173 lb. (1 442 kg.) 216 lb. (98 kg.) 3,587 lb. (1 631 kg.) 654 gals. (2 975 litres) 30 gals. (164 Hires) ordinary type, this portion of the wing ter minates in a curved strip to form the fixed portion of the slot between flap and wing. The extreme leading edge is a trough of U-section, attached to the lower edge of the false front spar by "piano" hinges. It is built in short units. Not only does this form of construc tion facilitate access to the leads, engine con trols, etc., carried on the front wall of the spar box, but in case of damage to a leading edge the chances are that only a short unit will need replacement. Outer wing portions are of generally similar construction to the centre-section, with the exception that the main spar has a solid web, and flanges of extruded L-section. Gn their leading edges they carry the automatic slots, and on the trailing edges the Frise ailerons. Each outer wing portion is attached to the centre-section by four bolts; two large ones on the ends of top and bottom flanges of the main spar, one near the upper edge of the front spar wall, and one a short distance ahead of the junction of flaps and ailerons to the trail ing edge. The two latter are quite light fit tings, and almost the entire load is taken by the two very large bolted joints on the main spar flanges. In order to '' close '' the spar box and to give access for inspection of the internal structure during the subsequent life of the machine, the under-surface of the wing has two straight (non-tapering) panels, about Sin. wide, running the entire span. These panels are located adjacent to the lower spar flange, and piano hinges are provided along one edge of each. Finally, the three main wing por tions pass to the main assembly jig, in which they are bolted together and the interchange- ability assured. "The production "flow" system may be described as a lateral inflow of small pieces from the different shops into two parallel longitudinal lines, one the fuselage components and the other the wing components. Owing to the "split" type of production one does not see anywhere in the works the familiar rows of finished or nearly finished fuselages and wings. When the three fuselage portions meet the centre-section at the far end of the shop, they are bolted together temporarily for transport by road to the works at Radlett aerodrome. There the fuselage is removed from the road chassis and finally assembled on the wing, resting on the proper undercarriage, which has been attached in the meantime. At the Cricklewood works elaborate jigs are used for the assembly of the engine mountings. Each jig carries Service Load and Range. Range Load Normal Cruising Speed Economical Cruising Speed lb. kg. miles km. miles km. 2,587 1 176 1,475 2 380 1,790 2 880 3,587 1 631 1,095 1 760 1,335 2150 5587 2 540 369 580 440 710 Performance at Max. Permissible Wt. of 21,000 lb. (9 550 kg.) (At 15,000ft. (4 580 m.) Cruising speed Economical speed ... Service ceiling Time to 15,000ft Sea level rate of climb Take-off run to clear 50ft. barrier 212 m.p.h. (341 km'h.) 172 m.p.h. (277 km.h.) 19,500ft. (5 950 m.) 27.2 minutes 760 ft. min. (3.87 m.fsec.) 810 yds. (741 m.) 22,700ft. (6,920 m.) 18.9 minutes 980 ft.(rata. (4,98 m!sx.) 550 vds. (503 m.) 550 yds. (503 m.) 73 m.p.h. (117 km'h.) Service Load and Range. Speed Economical Speed km. miles km. 780 1990 3 210 875 1,340 2 160 1 270 870 1 400 * Alternative Power Plants are the Napier Dagger VIII and the Rolls- Royce Merlin X. Load lb. ks. 8,587 1631 5,587 2 540 6,587 2 994 Normal Cruising miles 1,725 2 1,165 1 788 1
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