hydroplane
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hydroplane
1. a motorboat equipped with hydrofoils or with a shaped bottom that raises its hull out of the water at high speeds
2. an attachment to an aircraft to enable it to glide along the surface of water
3. another name (esp US) for a seaplane
4. a horizontal vane on the hull of a submarine for controlling its vertical motion
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
hydroplane
[′hī·drə‚plān] (naval architecture)
A boat which when operated at high speed planes on the surface of the water; the bottom of such a craft is normally a prismatic surface. Also known as planing boat.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Hydroplane
a light, high-speed vessel. Because of the special shape of its bottom, during mption the hydroplane gains hydrodynamic thrust, which lifts the nose part and causes a significant general up-floating of the vessel. (It appears to slip or glide along the surface of the water.) As a result, the area of contact between the bottom and the water is reduced, resistance to movement decreases, and the traveling speed increases. Light internal combustion engines and gas turbines are mounted on hydroplanes. Propellers (less often, airscrews) and water jets serve as propelling devices. Hydroplanes are used to carry passengers, for guard duty, in sport races, and for pleasure.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.