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Aviation History
1918
1918 - 1341.PDF
W W**£33r NOVEMBER 28, 19 m m m * m w :-^:"7'.J. >••'••':•"//ji,' •'-»•• 1 : V:\ . .-.^--'•-••'-r'vr.ii.- Fig. 49 Radiator of four - engined giant. -••".-•.- 18 : x X X X X X X 82Si % X Xn X m m m large diameter (about 20 mm.) in a manner similar to that ofa honeycomb radiator. A pump mounted at the base of the radiator is also furnished with an electrical thermometer,giving a reading on a dial in the cockpit. Each engine is fitted with a self-starting arrangement ofthe type usually fitted to Maybach motors. The exhaust pipe may be closed by means of a shutter, and all the cylinderscan be filled with gas from the carburettor by means of a large hand-pump, for which purpose all the valves are held open.When these valves are closed, and the starting magneto operated, the engine fires and continues running. Each enginehas its own radiator (Fig. 49), which is mounted directly above it, and supported by struts and stay wires at a pointabout half-way between the top and bottom planes. These radiators are of the type usually fitted to D.F.W. machines.They are rectangular in shape, with their greater length placed horizontally, and the radiating surface consists ofa series of zig-zag tubes placed vertically.' 5 Z I ~* The engine bearers consist of stout ash spars," reinforcedwith multi-ply wood. Owing to the burnt condition of the V. Tl ? 0 J.l 5£cr/o/v or LL-f. JfCTJOfl Or ffrO/VT Fig, 50.—Spar sections of four-engined giant.
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