directional instability

directional instability

The tendency of aircraft to depart from a straight flight by a combination of yawing and sideslipping without any additional control input.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
One of the keys to the success of this new lure was what Reed called "directional instability." "In studying lures, I found that weight at the nose of a lure and drag created by tail action contribute to directional stability," he says.
He said: "If the broomstick is flown with the brush leading it would cause directional instability.
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