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 ?

If turbulence is likely, I'll slow to my target turbulent air penetration speed at TOD.

Approach Gates: Approaches are a lot easier if you think of the various fixes on the way to the runway as points at which to manage speed, configuration and descent rate

The spray penetrates rapidly before 0.40 ms, then the penetration speed decreases due to increasing aerodynamic resistance.

Numerical Study on Flash Boiling Spray of Multi-Hole Injector

Transport-category aircraft have a turbulence penetration speed, [V.sub.B]--also known as rough air airspeed--which is slower than [V.sub.A].

Turbulence v-speeds: we were taught about maneuvering speed, VA, in basic ground school. Ever heard of VB? Well, there's a lot more to this maneuvering speed thing than we were taught

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.

Flow and thermally induced birefringence in gas-assisted tubular injection moldings: simulation and experiment

The meter offers a non-contact infrared depth and penetration speed sensor combined with simultaneous penetration resistance and temperature measurements.

SpotOn[R] consistometer

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.

McLaughlin Mfg

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.

McLaughlin Manufacturing. (What's New In Trenchless Tools and Equipment)

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.

Keep Your Speed Up: ATC may make this request when you 're squeezing into a busy airport. Best to not try it without practicing first

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.

McLaughlin Mfg

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).

VA, VB And Negative G: the speed you aim for in turbulence probably isn't adjusted for weight, making it too fast. That's not hard to fix

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.

Turbulence targets: the airplane probably can handle it, but only if you slow down, keep the wings level and accept altitude excursions

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]).

Riding the storm out: entering turbulence means you need to slow down, but how much? Below the airplane's maneuvering speed to its turbulence penetration speed

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