method and device for suppression of acoustic feedback in a motortestkammer

摘要

Methods and apparatus for suppressing cell howl with negligible impact on engine test conditions are described. The apparatus (100), in an exemplary embodiment, includes a flow distorter (102) configured to be positioned close to a nozzle exit (E) of an engine nozzle, and a flow distorter support (104) for maintaining the flow distorter (102) at a selected location. The flow distorter (102) is adjustably secured to the support (104) so that a distance at which a tip (106) of the distorter (102) is located relative to support (104) is adjustable. IMAGE