04.2 - Aerostructures Design, Structural Dynamics, Aeroelasticity
NOVEL TEST RIG TO DEMONSTRATE A MULTI FUNCTIONAL FLAP MECHANISM OFFERING A 2ND DEGREE OF FREEDOM
J. Docter¹, H. Pijlman¹, D. de Wit², J. Vervliet², J. Katarzynski¹, R. Postma¹, K.-J. Bisschop¹, J. Vroon¹; ¹NLR, Netherlands ;²Asco Industries, Belgium
This paper describes test development, demonstration and result correlation of a simplified but representative Multi-Functional Flap Mechanism (MFFM) in a novel test rig at Royal NLR. The objective is to demonstrate that the MFFM can rotate at a speed of 60 degrees per second in retracted, take-off and landing flap positions, considering intact, actuator failure and jamming cases. During the rotation, aero loads will be simulated by mechanical springs and wing bending will be simulated by hydraulic actuation on the station supports. In addition, the effect of flap skew on actuator loading is assessed and compared with analytical results.rnrnFurthermore a flexible tube test setup is developed to demonstrate the durability of the flexible hydraulic tube under harsh environmental and loading conditions. The tube should be able to withstand 27000 flight cycles under a pressure of 350bar without rupturing or breaking at temperature conditions of -55°C including combination with hydraulic contamination.rn