transonic speed

transonic speed

[tran′sän·ik ′spēd]
(fluid mechanics)
The speed of a body relative to the surrounding fluid at which the flow is in some places on the body subsonic and in other places supersonic.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
But that puts the pellet out the spout at transonic speed, just short of the sound barrier, which is exactly where the air turbulence is the worst for accuracy.
Without any problem specific knowledge, the method has captured the correct pressure distribution over different aerofoil sections operating at transonic speed.
Further, behind Knudsen layer, a gas-dynamic area is located, in which vapor flow moves perpendicular to the surface at transonic speed. When moving from the surface, vapor flow starts to expand into vacuum, which is substantiated by its own pressure, whereby vapor expansion occurs not just perpendicular to the surface, but also in lateral directions, due to which a vapor jet is formed.
It is interesting that control force and moment are generated at subsonic speed, M = 0.8, as well as across the transonic speed regime, 0.9 < M < 1.1, and they are almost constant in this speed regime.
Rossiter, "Wind tunnel experiments on the flow over rectangular cavities at subsonic and transonic speed," Aeronautical Research Council Reports and Memoranda 3438, 1964.
A flight comparison of a submerged inlet and a scoop inlet at transonic speeds, [online] [accessed 19 May.
As the vortex reaches to the end of the ridge, it is accelerated before the expansion region at subsonic to transonic speeds. Increasing the Mach number at this location can be seen in Figure 20 where the streamline colors are changed (from green to red at the passage).
The main draw when viewing the vehicle is the EJ200 jet engine, which is fuelled by 600,000 litres of fuel held in three tanks, and which on its own can propel the car to transonic speeds of around 600mph.
The biggest drive in the world is probably one used in a giant wind tunnel built by NASA to test space vehicles and capable of running at transonic speeds.
"Clearly, the aerodynamic challenges associated with developing a land-based vehicle capable of safely travelling at transonic speeds are great.
Rossiter, "Wind tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds," Tech.
Intended for engineers or aircraft enthusiasts with a high level of technical understanding, this work documents the resolution of some of the key problems in high speed flight including aerodynamic and gasdynamic challenges, turbojet engine production, and material physics at transonic speeds. The volume contains numerous charts, illustrations and formulas as well as fascinating reproductions of some of the hand written sketches and calculations by the original German engineers.