apparent drift


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Related to apparent drift: latitude nut

apparent drift

apparent drift
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An error in the directional gyro resulting from the effect of the earth's rotation and longitudinal position. At the equator, the rotation of the earth causes no movement of the observer about the directional gyro vertical axis, and there is thus no drift. At the poles, the rotation of the earth causes a movement of the observer about the vertical axis of 360° in 24 h (i.e., 15°/h). At other latitudes, its value is equal to the product of the earth's angular velocity and the sine of the latitude. This drift is compensated for by applying a constant torque of proper magnitude (in computer-driven systems) or periodic corrections.
References in periodicals archive ?
The Prime Minister, who was returning from his trip to the Gulf last night, will today chair back-to-back meetings of the National Security Council and the Cobra emergencies committee in an attempt to reassert control after days of apparent drift in Whitehall.
The factors responsible for apparent drift back to normal trading conditions are many, but a key reason according to Vohra is that, "the Indians consume only 1.
As regards an apparent drift to more regulation, Mr McGiveron is broadly in favour.
They had faulted Paul for weakness in the face of dissent and for the apparent drift of the church away from orthodoxy and traditional discipline.
Amid an apparent drift toward a clash between the two state institutions, the government has often blamed the Supreme Court for going beyond its constitutional powers, while judges insist the judiciary is there to uphold the constitution and rule of law in the country.
And he used Tuesday's emergency recall of Parliament to establish the Lib Dems as a voice for those uneasy about the apparent drift towards war to topple Saddam Hussein.