Patent ID: 8327698

Claim:
A test device for the fan of an aircraft engine for determining the acoustic and aerodynamic behavior and the performance data, the test device comprising an outer housing which is attached on the end side to a test stand wall ( 6 ) and is intended for receiving the fan ( 17 ) and a drive shaft ( 13 ) connected to the latter, characterized by a stationary, inner basic structure ( 1 , 7 to 11 ) which is designed as a cantilever support held on the test stand wall ( 6 ) and is intended for supporting the drive shaft ( 13 ); a plurality of mobile and interchangeable outer housing modules ( 18 to 24 ) which are connected releaseably and in a sealing manner to one another, some of which are supported on the floor, and which are adjustable in the X, Y and Z directions and can be aligned coaxially with respect to one another by means of an optical device; internal components ( 41 to 44 ) which are arranged interchangeably in the interior of the outer housing and are intended for transferring the air flow generated by the fan ( 17 ) to a bypass and a core flow duct ( 45 , 46 ) and as an acoustic and/or aerodynamic liner ( 48 ) of the bypass flow duct ( 45 ); and measuring devices ( 38 to 40 ) which are arranged interchangeably in the bypass flow duct ( 45 ) and are connected to a telemetry unit of modular design.