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Aviation History
1948
1948 - 1170.PDF
126 FLIGHT at a main centre fitting comprising a pair of forked lugs. An interconnecting tube also passes between the elevator sections and is supported at the main rudder /elevator hinge casting which is illustrated. The tailplane was priginally. positioned high on the fin to keep it clear of jet efflux and spray. In fact, the jet stream is inclined downwards in the planing attitude on t&e water and effectively forces the spray down/belojjg the tail. Tail control surfaces are horn-balanced, although the rudder of No. 3 airqjbft will have about half the balance area of the* first two illus- trated. A slight reduction in mainplane dihedral is also to be tried out on the third S.R/Ai, but this point has not yet been finalized. The ailerons each have four internal mass-balance weights. To avoid the possibility of crossed controls, the rudder and elevators are operated by tie-rods and chains located on each side of the fuselage, the rods being for pull movement only. The ailerons are also chain and sprocket operated from the cockpit, but have a sturdy interconnecting tube located along the rear face of the main spar for final actuation. The floats are built around a two-piece keelson, 'box form in front and tapering Z-section aft. There are four watertight compartments in each —nose, tail and centre portion divided lengthwise. Retraction is illustrated diagrammatically. Cockpit In keeping with modern military practice the pilot's cockpit is a separate small pressurized unit let into the hull or fuselage just forward of the main wing spar. It is cylindrical and of mono- coque construction, having six frames of top-hat or angle section. Bulkheads, intercostals, a Z-top frame to support the instrument panel, and silJs complete the structure. The sills correspond with and are attached to the front gunwales in the hull; they also carry the slides for the bubble canopy. This is of doubled Perspex with dry air spacr HOOD LOCK MPUCI * - RETRACTABLE AIR INTAKE CAMERA GUN CONTROL BOX * AIR INTAKERETRACTION JACK *'/ V - BIFURCATED AIR DUCT TO POWER UNITS 20 MMHISPANO CANNON (PORT OUTER) f BATTERIES FIGHTER FLYING BOAT . AIR COO OXYGEN - BOTTLES HREPRCfOf x * - , CURTAIN - PRINCIPAL Two J*letrovick fJLjA (W^j Span... ._- J4i... _. v. / ... Length ... * ... V... .*,.,"• ••• ".i Height :-••* ...' ..?4- .* Root chord (Rib I) I-*' ... - ' Tip chord (Rib 30) ../ ... — Aspect ratio -:., Mainplane area ••• j Incidence ^^
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