The Tiltrotor Test Rig (TTR) is a new NASA facility for testing full-scale proprotors. The first test campaign in the National Full-Scale Aerodynamics Facility (NFAC) concluded in November 2018. The wind-tunnel test included vertical climb conditions; that is, axial flow at low airspeeds (true hover is not possible in the NFAC). The rotor tested was the Bell Model 699, a 609 rotor modified specifically for wind-tunnel testing. The rotor was tested under a variety of NFAC configurations, some unprecedented and unique to vertical climb. Researchers must understand the differences in configuration if they are to make proper use of the data. This paper presents results for several different test configurations, including assessments of data quality. Comparisons with earlier tests of a similar rotor, the 0.656- scale Joint Vertical Experimental (JVX) rotor, are included to provide additional insights into rotor and wind tunnel behavior.


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    Title :

    Vertical Climb Testing of a Full-Scale Proprotor on the Tiltrotor Test Rig


    Contributors:

    Conference:

    Transformative Vertical Flight 2020 ; 2020 ; San Jose, CA, United States


    Publication date :

    2020-01-21


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






    TILTROTOR AIRCRAFT ROTATING PROPROTOR ASSEMBLY

    ROSS BRENT C / RINEHART MICHAEL E / WILLIAMS JEFFREY M et al. | European Patent Office | 2018

    Free access