the same timethere is automatic control whereby thevessel can be kept at the same level ifnecessary. When a Zeppelin drops a bombit suddenly becomes lighter, and it risesin consequence. This circumstance is verydisconcerting to gunners, for if, say, a200 lb. bomb were dropped, the ship wouldleap up… … S3 49 50 HEROIC AIRMEN using its powerful air pumps to press outthe hydrogen. Moreover, when the Zep-pelin is in motion it can use its elevatingplanes for changing altitude in the mannerof an aeroplane. Thus, in addition to itspower of steering from left to right in thesame plane, and of climbing…
World War, 1914-1918 · Aeronautics
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