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VX(vē`ĕks), nerve gasnerve gas,
any of several poison gases intended for military use, e.g., tabun, sarin, soman, and VX. Nerve gases were first developed by Germany during World War II but were not used at that time.
..... Click the link for more information. several times more toxic than sarin but less volatile. It kills within minutes if inhaled or deposited on the skin; protection from VX would require both protective suits and masks. The compound was first prepared in the 1950s during research for new insecticides; its chemical formula is classified by the U.S. government as secret. VX contaminates for several days ground on which it is released. Accidental release of VX in Utah in 1968 caused the death of thousands of sheep, some of them as far as 40 mi (64 km) from where the gas escaped.
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The best angle-of-climb speed. With most aircraft, the best angle of climb occurs in a clean configuration with the flaps up and the gear up, so VX is a clean configuration speed.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved