penetration speed

penetration speed

[‚pen·ə′trā·shən ‚spēd]
(mechanical engineering)
The speed at which a drill can cut through rock or other material.
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References in periodicals archive ?
The spray penetrates rapidly before 0.40 ms, then the penetration speed decreases due to increasing aerodynamic resistance.
Transport-category aircraft have a turbulence penetration speed, [V.sub.B]--also known as rough air airspeed--which is slower than [V.sub.A].
This is due to the lower gas penetration speed at gas-delay time of 6 s, due to the high viscosity of the polymer caused by the temperature decrease during the delay time.
The meter offers a non-contact infrared depth and penetration speed sensor combined with simultaneous penetration resistance and temperature measurements.
Features include lobed heads to reduce friction and maximize penetration speed, a heat treated alloy steel barrel for exceptional hardness and wear resistance, and a nitrated steel piston with built-in lubrication to minimize wear and resistance.
Hole Hammers feature lobed heads to reduce friction and maximize penetration speed. All tools are reversible with an air-assisted forward/positive lock reverse mechanism and are powered by an air compressor with a minimum of 90 psi.
Tell the controller you're unable to comply if the air's too turbulent for you to fly that fast down low (e.g., above weight-adjusted VA or turbulent air penetration speed, TAPS), if you're not fully briefed and set up for the approach you'll fly, or if there's any other reason you cannot or do not wish to comply with the tower's request.
All McLaughlin piercing tools feature lobed heads to reduce friction and maximize penetration speed, a heat treated alloy steel barrel for exceptional hardness and wear resistance, and a nitrated steel piston with built-in lubrication to minimize wear and resistance.
One of them is the airplane's design maneuvering speed (VA), sometimes confused with the turbulent air penetration speed, which perhaps is better known as design speed for maximum gust intensity (VB).
Of course, we need to set power to what little is necessary to maintain at or below our targeted turbulence penetration speed, VA, Vo, or V-whatever-the-manufacturer-recommends, corrected for weight, in level flight.
The flight data recorder retrieved from the crashed twin-engine, modern turboprop revealed that while flying in an area of thunderstorm-generated, airframe-shattering turbulence, its airspeed was 60 knots greater than the published turbulence penetration speed, or the speed for maximum gust intensity ([V.sub.B]).