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Aviation History
1948
1948 - 0077.PDF
lETRACTABLE FLOAT January 15/A, 1948 67 FUEL TANKS PASSENGERS' , COMPARTMENTS LADIES ROOM BERTH WATERTIGHT RA. MEN'S UMNS COMPARTMENTS DRESSING ROOM NO. 1 HOLD TOILETS marine glue—a good old boat-building practice—but above this, that is in the pressurized section, mating faces are coated with Bostik solution S15/606. Rivets are hand- selected by testing in depth-gauges so that over-long or short rivets are rejected: each hole is also filled with the Bostik solution before the rivet is inserted, and fillets of solution are applied to all internal joint-ruiis where leak paths might start. In this connection it is worthy of em- phasizing that the SR/45 is designed for a cabin pressure differential of 8£lb/sq in. The lower deck plating is supported on a grid framework made up with the top members of the planing-bottom bulk- heads and fore-and-aft I-beams. The rectangles thus formed are subdivided by drawn Z-section stringers al- ternating in pairs with the beams, but these stringers are themselves intercostal to extruded transverse I-joists paired between bulkheads. Lower-deck hull-frames are heavy-gauge pressings-made up into I-sections and attached at deck level with four forged fittings (two per side) which are through-bolted to similar fittings riveted to the bulkhead. The skin panelling Representative sections of the hull showing change in profile, and layers '' of planing bottom (unpressurized), lower deck and upper deck. The marine compartment in the lower-deck nose is also unpressurized.
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