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Aviation History
1946
1946 - 0196.PDF
FLIGHT JANUARY 31ST, T946 SEA FURY X View from below of rear spar joint at centre line with aileron control transmission linkage. so that they serve adjacent cylinders, their angular dis- position has been changed to 20 deg., and this has had the eilect of so reducing vibration that the results are, in the words of one of the pilots, "revolutionary." It should be pointed out that whilst this measure is applic- able to the Fury airframe it would not necessarily have the same effect in another aircraft in which the inherent vibration periods might well be different. Aft of the front bulkhead-firewall, which is built above the front spar, are housed two fuel tanks, the main tank o! 94-gallon capacity being interconnected with a 30-gallon auxiliary tank housed aft of it immediately beneath the rudder pedals. Two 28-gallon inter-spar tanks, one in each wing, and the 20-gallon nose tank in the starboard leading edge all feed into the main fuselage fuel tank, from the sump of which the fuel is fed to the engine. The centre fuselage, which embraces the cockpit, is a monocoque structure com- prising four main longerons and a number of hefty frames notched for inter- section with the top-hat stringers. Wing attach- ment is made at the front spar, by single bolts in forged fittings, to the base of the front bulkhead, and at the rear spar by similar fittings anchored to the base of a main-frame immedi- ately forward of the pilot's seat. Plain angle extru- sions form butting members at the joint between centre and rear fuselage portions, and these are bolted one to the other. Armour protec- tion for the pilot consists of a single fin. slab for head and neck preserva- tion, and two thinner plates, with a space of about 4111. between them, for back protection. As in the Tempest, the miscel lany of impedimenta below the cockpit floor would pro- vide at least some measure of deflective protection. Of the rear fuselage, little Looking rearward through need be said; it is a plain light structure of Detail of wing/fuselage attachment at front spar, and lower port»anchorage of engine mounting. monocoque of Z-section frames and half- and full top-hat stringers, the frames being notched for intersection. Con- trol transmissions for rudder and elevators run respectively along the port side and in the centre of the "roof," and, unusually, are made* up of short lengths of push/pull tube pivoted to idler links. There would seem to be great merit in this system, for not only is static friction reduced to a negligible quantity, but the transmission is absolutely posi- tive and needs no adjustment. Tail Surfaces The tail unit comprises a single-piece tailplane assembled by passing it through an aperture in the base of the integral fin and bolting it to attachment fittings on the frames of the fuselage tail end. Elevators are fully balanced and are, like the rudder, carried in conventional self-aligning bearings ; the rudder is covered with a pre-stretched metal skin and, by so being, makes the Fury the first completely all-metal Haw- ker aircraft. A sting-type arrester hook is fitted beneath the rudder (which has, there- fore, been reduced slightly in area) and when the hook is released,, the light spring in the telescopic hook strut causes it to extend about 12m. ; an oleo-pneumatic snubber prevents the hook from bouncing along the deck and so ensures that it engages the first available arrester wire. Structurally the wings of all three Furies are basic- ally similar to that of the Tempest although, of course, the Sea Fury- is additionally provided with hydraulically actuated wing-folding gear. The wing spars are built up with T-section booms and plate webs; from the centre line to the change in dihedral the "T" is made up of two thick L-section extru- mbnocoque showing simple, sions riveted together, stringers and frames. whilst from this point out-
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