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.
References in periodicals archive ?
Rossiter, "Wind tunnel experiments on the flow over rectangular cavities at subsonic and transonic speed," Aeronautical Research Council Reports and Memoranda 3438, 1964.
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.
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.
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.
Upon completion of low-speed flight testing, the X-48B will be used to test the BWB's low-noise characteristics, as well as BWB handling characteristics at transonic speeds.
The "buzz" usually refers to a rapid oscillation of a control surface, most often an aileron, which doesn't usually attain a large amplitude or become dangerous, and is caused in most cases by shock-induced separation of the boundary layer at high transonic speeds.
A year and a half ago, before the US Navy had released any funds for the EA-18 concept, developers at Boeing were talking about how the their aircraft would be able to operate in a wild-weasel role, penetrating enemy airspace and engaging SAM batteries in pop-up attacks at transonic speeds.
Primary to the PWT are two closed-circuit wind tunnels (one to simulate transonic speeds -- Mach 0.