Aerodyn Engineering Llc products

Radial (linear) traverses can be used to move probes to any radial position across the flow annulus. These can also have the option to rotate a probe in yaw direction in order that its sensor is aligned with the flow swirl direction. A radial traverse can be manufactured such that its size, stroke, and length are optimized for the customer’s requirements, which can be particularly useful if there is limited space around the test vehicle. Although the design and manufacture of radial traverses is specialized work, the engineering concepts involved are relatively straightforward and easily understood. This is because, by using an appropriate seal around the circular probe stem, it is possible to isolate the traverse itself from the influence of the flow that is being measured (which is particularly convenient when measuring high pressure and/or high temperature flows). It is also possible to design a traverse that is independent of the test vehicle geometry.

A circumferential traverse is used to provide rotational movement around an engine or test rig axis. The design of a circumferential traverse can be extremely complex, since it is necessary to provide the required range of angular movement, whilst also ensuring that the rotation is concentric with the test vehicle center line. It is necessary to have an effective seal that prevents the escape of fluid from the test vehicle, whilst also having a structure that can tolerate the gas flow temperatures and pressures. Often, the circumferential traverse design must be closely integrated with that of the test vehicle, with a well-defined mechanical interface.