bow wave

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bow wave

[′bau̇ ‚wāv]
(fluid mechanics)
A shock wave occurring in front of a body, such as an airfoil, or apparently attached to the forward tip of the body.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

bow shock wave

bow shock waveclick for a larger image
A shock wave that forms when the aircraft is flying at a speed faster than the speed of sound. A bow wave is a shock wave in front of a body, such as an airfoil, or is apparently attached to the forward tip of the body.

compression wave

compression waveclick for a larger image
A shock wave that forms on the surface of an airfoil moving through the air at supersonic speeds. The reverse phenomenon is an expansion wave. Also called bow wave. See also bow shock wave and expansion wave.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Imagine this scenario: At the same time you are ready to land to the south on Runway 18 with a 10-knot wind coming down the runway, there is a dissipating thunderstorm 10-20 miles to the west that will push a bow wave of strong wind from 29030G50.
Caption: MAKING WAVES The sudden drop in sunlight caused electron counts in the ionosphere to plummet and triggered a set of bow waves captured by radio telescopes.
However, in addition to atmospheric turbulence and tanker wake, bow wave also has an effect on the drogue, leading to the drogue leaving the original position when the drogue is close to the receiver aircraft, and this perturbation is obvious for the layout of probe located on the side in manned aircrafts [24-26].
The first day of testing was spent calibrating how the drogue would react to the X-47B's bow wave. The team programmed the aircraft to approach the basket from a certain position, but found that the bow wave moved the basket up and to the right far enough that the X-47B could not chase it.
14, which shows the bow wave generated from a semi-planing boat.
The Kelvin ship wave [[zeta].sub.K](x,y) is divided into bow wave [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] and stern wave [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], and f is the viscosity coefficient.
The planning hull lifts the tube on top of its own bow wave. The tube also displaces less water, which creates less resistance and drag and produces greater speed with less horsepower than a traditional tube shape creating more fuel efficiency out on the water.
He also referred to a "bow wave" of medical graduates in Australia who would soon find there were not enough jobs in Australia for them and they may look to New Zealand in the future.
Thereafter the numbers are expected to drop to around 20-30 per year as the initial bow wave completes the course and more recently qualified optometrists begin to see this as a natural progression in their career development.
The inventors, Mike Lowery and Paul Price, said the design results in a significant reduction of down force and elimination of the bow wave in front of the barrel as it rotates at the same speed as the flow of water, thus increasing efficiency.
The data proved this location was still in the bow wave of the Glasair wing (we surmised) when approaching stall.