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Aviation History
1946
1946 - 0104.PDF
FLIGHT JANUARY 17TH, T946 THE AVRO LINCOLN The bumb capacity «f the Lincoln is the same as thatot the Lancaster, both aircraft having identical bomb-bays. This physically limits the maximum bomb-lifting capacityof the Lincoln to a value below that which it has the power to lift. However, maxima are very rarely capable of beingcombined, and thus the most efficient aircraft in any field is that in which the most effective compromise is madebetween the highest individual values. In the case of the Lincoln the load/range requirement was to obtain thegreatest number of alternative operative conditions be- tween maximum range and maximum load within theframing limits of the engines, and with what degree of suc- cess this has .been realised may be appreciated from thetabulation of bomb loads and ranges. Structurally the Lincoln is very similar to the Lancaster,although there are considerable differences in the wing ; but the fuselage is built on Lancaster principles embodyinglight channel section frames notched for intersection with th~ plain angle stringers As mentioned previously, the f 40flO0r '.aOOOr 58.OK) 20030 Curves ot max. climb performanceat max. climbing power, and (right), similar curves for max cruising-ower 500 1000 RATE OF CUMB-FT. PER MIN 50 100 TIW TO HEIGHT-MIN Bomb bay in centre-section showing main sling attachmentand steady-crutch for 22,000 lb. bomb. extra length of fuselage necessitated re-ducing the incidence of the tailplane by i deg. 15 min., and in order to obviate amodification oi the attachment fittings, the rear fuselage is "cocked up" therequisite amount by raking the face of the jointing frame where it meets the in-termediate fuselage. The main bomb floor, as in the Lancas-ter, is composed of C-beams and C-inter- costals bounded by extruded membersof flanged channel section taking the form of longerons. In the centre-sectionportion of the bomb floor are two massive channel-section cast beams runningathwartships about i8in. apart, the fore- most being roughly two feet abaft thefront * spar; centrally between these beams are two equally massive cast in-tercostals which carry the sling fitting for the main (22,000 lbi) bomb suspen-150 sion, and .outboard of this on each side ' are auxiliary release hooks fitted in Breakdown ot comp.ete ai- craft into major componentsshowing how production and transport r's facilitated
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