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lead angle |
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lead angle [′lēd ‚aŋ·gəl] (design engineering) The angle that the tangent to a helix makes with the plane normal to the axis of the helix. (metallurgy) The angle at the point of welding between an electrode and a line perpendicular to the weld axis. (ordnance) The angle between the line of sight to a moving target and the line of sight to a point ahead of the target. A dropping angle. (physics) The phase difference between a sinusoidally varying quantity and a reference quantity which varies sinusoidally at the same frequency, when this phase difference is positive. Also known as angle of lead; lead; phase lead. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The combination included an uncoated tungsten carbide insert with a chip breaker and holder providing a zero-degree lead angle. It shows the calculated fraction of the maximum flow rate over the rotor wing per unit length, as a function of rotor wing helix angle for a fixed rotor speed, wing length, lead angle and land width. Equipped with a Gen II or III tube (depending on export destination), a laser rangefinder and a north sensor, the system is aimed at the target, the latter being kept within the reticule for about two seconds; at this point range is determined and so is the slew rate allowing the Vosel to automatically offer an new aiming point within the sight that provides both the required elevation and lead angle. |
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