Circumferential Traverse

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.