titions are spirally ar-ranged in such a manner that the jacket waterpasses four times around the cylinders duringeach circuit, and then over the entire surface ofthe cylinder heads. In addition to this the en-gine is also equipped with a piston circulationpump instead of the usual centrifugal or… … August, ipio AIRCRAFT 223 AEROPLANES AND DIRIGIBLES MAKESHIFTS By Horace Geigh Hopkins 1 T appears to be the g:eneral belief at the pres-■*■ ent time that the problem of aerial navigationhas been solved; that only a few inconsequentialimprovements need to be made in the aeroplaneto put man in…
Aeronautics
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