Charles B. Hayward 49 … Fig. 21. Side and End Views of British Astra-Torres Dirigible Used for Anti-Submarine Patrol Service to those used in aeroplane construction. Despite their low power, these dirigibles can make 40 miles an hour, owing to their greatly reduced head resistance. Instead of employing either an auxiliary…
Dirigible · Zeppelin · Blimp · Aviation · Baloon
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