sound barrier

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sound barrier:

see aerodynamicsaerodynamics,
study of gases in motion. As the principal application of aerodynamics is the design of aircraft, air is the gas with which the science is most concerned. Although aerodynamics is primarily concerned with flight, its principles are also used in designing automobile
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.

Sound barrier

Any solid obstacle that is relatively opaque to sound that blocks the line of sight between a sound source and the point of reception of the sound.

sound barrier

[′sau̇nd ‚bar·ē·ər]
(aerospace engineering)

sound barrier

Any solid obstacle which is relatively opaque to sound that blocks the line of sight between a sound source and the point of reception of the sound.

sound barrier

A so-called barrier to flight encountered by an airplane designed for subsonic speeds when it reaches transonic speeds and meets the turbulence incident of diverse degrees of compressibility. An intense buffet and the loss of controls to a varying degree may also be experienced at this speed. Also called a transonic barrier.

sound barrier

a hypothetical barrier to flight at or above the speed of sound, when a sudden large increase in drag occurs
References in periodicals archive ?
According to actual condition, the model of nine plug-in sound barriers and one expansion joint is simulated using the finite element method.
To explore the influence of the process of train passing on the sound barrier, numerous studies about impulsive wind pressure have been conducted [2-7].
In view of the above studies, in this paper, firstly the response of sound barrier subjected to train-induced impulsive wind pressure is simulated by using the finite element method.
WORCESTER -- For about 40 years, Nicholas Alexanian and his neighbors on Melrose Street have been trying to get the state to put up a sound barrier along the section of Interstate 290 that runs adjacent to their street.
Alexanian, 86, a retired engineer, said he is the last survivor among the 12 Melrose Street residents who originally petitioned the City Council for the sound barrier 40 years ago.
CENTRIA is pleased to announce that Eco Sound Barrier, a sound barrier system with the industry's most innovative combination of affordability, sustainability and architectural flexibility, has received the American Society of Civil Engineers' Charles Pankow Award for Innovation.
We are delighted to have won this prestigious award," said Todd Padezanin, product manager of Eco Sound Barrier for CENTRIA.
The goal of this research was to develop a coordinated approach to the design of wood highway sound barriers so that they meet the design criteria of strength, durability, acoustic effectiveness, and public acceptance.
The acoustic effectiveness of concrete and wood sound barriers was determined by in-situ testing of existing sound barriers.
In addition to railroad ties and bridges, solid sawn timbers are used to make posts for signs, guardrails, and sound barriers.
Solid sawn timbers are also used to make sound barriers for roads and highways to reduce noise from traffic [25].