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.

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.
References in periodicals archive ?
It obtains a predetermined steering feel, independent of load and tires, and contributes to a more relaxed driving through improved directional stability.
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
It is an active safety system that monitors the roll and directional stability of vehicles.
Designed for sports cars and high performance saloons, the Michelin Pilot Sport 4 S offers unparalleled driving pleasure thanks to its exceptional steering precision and directional stability.
Designed for sports cars and high-performance saloons, the Michelin Pilot Sport 4 S offers an unparalleled driving performance thanks to its exceptional steering precision and directional stability.
Both are tuned to react to the driver's input commands in an unnoticeable way, and provide full directional stability and agility," he says.
Therefore, during a normal straight-line deceleration, an unexpected yaw moment would be generated, affecting vehicle's directional stability.
When flying "wings-level," the horizontal components cancel out and provide some directional stability.
Modern automotive steering systems are equipped with advanced safety systems and advanced driver assistance systems (ADAS) such as airbags (in steering wheels), anti-lock braking system (ABS), autonomous cruise control (ACC), and electric power-assisted steering (EPAS) to ensure safe and smooth driving and to provide improved directional stability and agility to the vehicle.
The SPAD has a fairly long aft body, contributing to directional stability.
To provide access to the cargo area from the front without having to disconnect all electrical, hydraulic and flight control connections, the standard A300 cockpit was moved down below the cargo floor level, and the tail structure was enlarged and strengthened to maintain directional stability.

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