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Updated: May 28, 2025
One kept his eye on a bubble and turned his wheel to control the hydroplanes to keep the craft level, and the other man's eyes also watched a bubble in a level. His share of the work was to keep the vessel at the depth ordered by the commander.
If obliged to work swiftly and in some instances upon the advice of intuition rather than practical knowledge, he went not unintelligently about his task, made few false moves. Turning first to the diving controls, he adjusted the hydroplanes to their extreme downward inclination, then made the rounds of the vent valves, opening all wide.
The bicycle wheels on which the big airship would run along the ground, until it had acquired momentum for a rise, were put in place. "I didn't just like those hydroplanes, though," said Dick, who had added them as an after thought. "I think they should be made larger." "And I agree with you," said Mr. Vardon.
"Well, we've never tried the hydroplanes in rough water, and there is always the chance for an accident. Stand out where you can jump, if you have to," he directed. Lieutenant McBride was standing with his watch out, ready to note the exact second of landing. He knew he must be officially correct, though he would give Dick every possible chance and favor.
Only a few weeks after the armistice announcement was made of plans for an "All Red Air Route" from Cairo across the desert and the jungle to the Cape. This could all be done over British territory, with the part over Lakes Victoria Nyanza and Tanganyika covered by hydroplanes.
The Marie Tieresa, back from her successful raid, was one of the foremost in the French line of battle. Now, as she steamed forward with the rest of the fleet, her hydroplanes were made ready for action. Captain Dreyfuss summoned Jack and Frank before him. "You will each take a seat in one of the hydroplanes," he ordered. "Your duties will be to drop bombs on the enemy.
These seemed to concern Alten far more than the airship, and he informed me that from their, to me, aimless movements he deduced they were hunting for us by hydroplanes. Occasionally we lay on the bottom in nineteen fathoms. By 4 p.m. the atmosphere was becoming rather unpleasant and hot, and gradually we took off more clothes.
This automatic maintenance of depth without manipulating the hydroplanes or rudders was a performance not anticipated, nor claimed in my original patent on the above-mentioned combination, and what caused these vessels to function in this manner remained a mystery, which was unsolved until I built a model tank in 1905 in Berlin, Germany, and conducted a series of experiments on models of submarines.
Hydroplanes both fore and aft are now generally used to assist in regulating and controlling stability in the submerged state. The motive power of the modern submarine is invariably of a two-fold type. For travelling on the surface internal combustion engines are used. The gasoline engine of former years has been displaced by Diesel motors or adaptations of them.
And then a more disturbing noise still, for out of the Arsenal, scattering foam, came four hydroplanes to act as a convoy and guard of honour, all soaring from their spray just before our eyes, and like enraged giant dragon-flies wheeling and swooping above the prince until we lost sight and sound of them. But long before we were at S. Pietro's they were furiously back again.
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