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Aviation History
1921
1921 - 0082.PDF
HT FEBRUARY 3, 1921 form it was similar to " L.70 "—the first ship of this class— which was destroyed by our naval forces on August 5, 1918. The " L.70 " and " L.71 " as first turned out were 693 ft. long, 78 ft. in diameter, and had a capacity of 2,200,000 cu. ft. distributed over 15 gas ballonets. the gross dis- placement was about 65 tons, and the gross disposal lift 44 tons. In the " L.70 " class the arrangement of cars was different from previous types, in that an extra pair of side- cars was added, making six in all, the rear car having two engines. Later, the " L.71 " was rebuilt and several modifications introduced. The length of the hull was increased to 743 ft. The enclosed radiator as fitted to the rear and side cars of the " L. 71 " 1 In the nose of the car are two sliding shutters, operated from within, which regulate the volume of air passing through the radiator. The opening shown in the bottom of the car is an air inlet, regulated by a throttle, passing fresh air to the interior, the air emerging near the engine. by the addition of another gas compartment, which brought up the capacity to 2/500,000 cu. ft. The gross displacement was increased to about 75 tons and the gross disposal lift to 50 tons. In its present form the rear car is much smaller, and contains only one engine instead of two. The maximum speed of " L.71 " is about 75 m.p.h. t 0 As far as we could see from our examination of " L.71 "— which was unavoidably little more than a cursory one—the general construction differed very little from that of " L 64." RADIATOR The enclosed radiator of the front car of "L. 71," showing how the volume of air passing through the former is regulated by means cf an air scoop hinging in the roof of the car. 82
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