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Aviation History
1934
1934 - 1137.PDF
OCTOBER 25, 1934. FLIGHT. 1139 A LIGHT AMERICAN AMPHIBIAN The Privateer 111 FROM WET TO DRY : The Privateer amphibian (215 h.p. seven-cylinder Continental R-670 engine) taxying from the water to dry land. A MPHIBIONS Inc., of Roosevelt Field, Garden City, Long •**• Island, New York, build an interesting little three-sealer monoplane amphibian for private owners The hull is unique in design and construction, the frame- Work being constructed of chrome molybdenum steel tubing, sand blasted, and covered with bakelite varnish, to which is attached wood stringers and fairing strips. A '' Vee "-shaped Alclad bottom 0.65111. thick is bolted to spruce stringers. A process known as 'metallising" protects all corrodible metal parts of the aircraft. This process entails sand-blasting all such parts and then spraying molten zinc upon them to a thickness of about ten thousandths of an inch. The covering for the hull consists ot 18 oz. duck (of corresponding strength to duralumin) on the sides, and fabric on the top. No metal sheeting is used All duck is treated with several coats ol dope, furnishing a durable moisture-proof finish impervious to water, and which will not leak or crack under the most seven- operating conditions. Comprehensive Equipment Anchor lines and mooring ropes are carried beneath a deck hatch in the bows. To the rear of thU compartment are the battery and tools. Together with these are two compressed-air tanks which operate the retractable landing gear. Aft of the cabin three U.S Navy type flotation bags, any two of which will keep the machine afloat should the hull be flooded, are carried. These are inflated ready for emergency use Ample room is provided in the cabin lor baggage and wireless. The wings are built ot routed spruce spars with stainless steel ribs and drag wires. The ailerons are ot stainless steel construction throughout and are covered with fabric Two tanks, holding twenty-eight gallons of fuel each, are carried within the wings. Mounted as a pusher above the wings is a Continental R-670 engine of 215 h.p. The front cowling contains the oil tank and the sides are hinged to permit easy access to the engine and starter. Low drag cowling and a PRIVATEER III P-3B 215 h.p. Continental R-670 engine DIMENSION? 42ft. Oin. (12,9 m) ••' ... 30ft. 4in. (9,24 m) g • • '>24sq. ft. (20,S«I Wing area ••• " ' WEIGHTS AND LOADINCS Weight empty - ||» £ \\% *g Gross weight i^Mb/i^U** « PERfOKMANCE Maximum speed SS&^OT ?ml?ngspe^ ' 55 m.p.h.S* *'«/*) Landing speed r.OO ft per min (183 mlnun) Rate of climb at sea levei ... • £» ShSflMO *m) Kaoge ... Hamilton steel propeller are fitted as standard equipment. The retraction, lowering and locking operation of the land- ing gear is effected by moving a small lever similar to the gear lever of a car and requiring no more effort. Mechanically, the automatic operation ol the gear is obtained by utilising the stored energy of compressed air derived from a standard Heywood starter which forces air into oil reservoirs. The oil is thereby forced into the retracting chambers and raises or lowers the geai in ten seconds. Bendix brakes are fitted to the wheels, and a pneumatic tail wheel mounted on roller bearings and steered by 1he rudder pedals is combined with a water rudder. Visibility, forward, upward and downward, is excellent. PRIVATEER P-3B 215 h.p. ContinentalEngine
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