lag angle

lag angle

[′lag ‚aŋ·gəl]
(physics)
The negative of phase difference between a sinusoidally varying quantity and a reference quantity which varies sinusoidally at the same frequency, when this phase difference is negative. Also known as angle of lag; lag.

lag angle

The angle by which a rotor blade is displaced about its drag hinge. The angle is measured between the blade-span axis and a radial line taken across the rotor disc containing the drag hinge and the axis of rotation.
References in periodicals archive ?
A very important fact about magnetos is that different engines and different magnetos quite often have different degrees of lag angle and advance on the impulse.
The E4A and F4 mags have 35-degree lag angles on the impulse, which also means 35 degrees of advance after the latch releases.
For full tool control in 5-axis mode, CAM systems should provide shops with the ability to set the tool's tilt angle by specifying lead and lag angles.