directional stability


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directional stability

[də′rek·shən·əl stə′bil·əd·ē]
(aerospace engineering)
The property of an aircraft, rocket, or such, enabling it to restore itself from a yawing or side-slipping condition. Also known as weathercock stability.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

directional stability

directional stabilityclick for a larger image
The stability that concerns yawing about the normal, or vertical, axis. An aircraft is directionally stable if when it is temporarily deflected from its course, it tends to return to the original course without any correction applied by the pilot. Also called weathercock stability or yaw stability.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Summary: Aircraft vertical stabilizers are typically located on the aft end of the aircraft body, and are proposed to reduce the aerodynamic side slip & offer excellent directional stability.
Addressing an annual gathering of the Federation of Federation of Indian Chambers of Commerce and Industry (FICCI) on Friday, Jaitley noted that the need of the hour was to formulate policies that have clarity, directional stability and decisive leadership, and establish a market economy with social consciousness for ensuring equitable growth.
When the studies in the literature are examined, there are no studies that examine both directional stability ([C.sub.n][beta]) and maximum lift/drag ratio (also called maximum fines in the literature) together.
The dorsal assembly extends from the aircraft's rear fin toward its nose, helping provide directional stability during asymmetrical flight caused by external conditions such as crosswinds.
The team tuning the New BMW M5 chassis only had one goal in mind - unbeatable driving dynamics with maximum directional stability. This took place in part on the company's own race circuit in Miramas in the south of France, and the world's toughest test track, the NIrburgringNordschleife.
The progressive steering - which makes light work of parking but keeps directional stability and precision at speed - was a joy.
It obtains a predetermined steering feel, independent of load and tires, and contributes to a more relaxed driving through improved directional stability.
The vertical stabilizer is an essential element in providing the aircraft with its directional stability characteristic while ailerons and rudder serve as the primary control surfaces of the yawing and banking maneuvers.
The BMW engineers employed far-reaching chassis modifications to significantly improve the driving dynamics, directional stability and steering feel of the new X3.
SINTEF Ocean tests resistance, propulsion, seakeeping in head and following seas, and directional stability tests with free running models

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