Word: airship
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Dates: during 1920-1929
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...birds were flying, as the grey geese, the sleek ducks that leave their marshy beds and beat away with the frost at their backs. The Shenandoah it was, which had on that cool morning left its hangar at Lakehurst to start on the longest flight ever attempted by an airship...
Secretary of the Navy Wilbur paid a visit to the Shenandoah, now in perfect shape and flying better than ever. He was delighted with his visit. They gave him a good reception at the sta-tion-and a drink of water. When an airship has flown a great distance, she has naturally consumed an enormous weight of fuel. The ship being lighter, it was formerly necessary to release the valuable helium gas and diminish the lift of the gas bags to re-store equilibrium. Besi'des being a source of expense, this meant that there was less reserve...
During the visit Admiral Moffet promised a mooring-mast for New York City, probably at Manhattan Transfer, spoke of the possible establishment of a two-day airship mail service to London...
Experience with the Shenandoah's permanent mooring mast at Lakehurst, N. J., has convinced the U. S. Navy of the mast's immense value in anchoring rigid airships. Therefore, another mast is to be erected immediately at Tacoma, to serve as the Navy's Western station. Tests have shown that few men are needed to secure an airship to a mast, hundreds are required to take an airship in or out of a hangar; also that an airship can stay indefinitely at the mast, be refuelled and regassed there, have all but major repairs made when thus...
Hydrogen Arguments. While helium is exceedingly light as compared with air, it is somewhat heavier than hydrogen. The total lift of a helium-filled dirigible is accordingly some 10% less than that of the hydrogen-filled airship. The difference does not appear important at first sight, but the total lift of the gas carries the structure, the motors and the crew. It is only the last 20% or so that is available for carrying fuel, and hence a difference of 10% in the gross lift may spell a difference of 50% in the fuel-carrying capacity. On long-distance flights...