To quantify the benefits of smart materials and structures adaptive wing technology. Northrop Grumman Corp. built and tested two 16% scale wind tunnel models of a fighter/attach aircraft under the DARPA/AFRL/NASA Smart Materials and Structures Development-Smart Wing Phase 1. Performance gains quantified included increased pitching moment, increased rolling moment and improved pressure distribution. The benefits were obtained for hingeless, contoured trailing edge control surfaces with embedded shape memory alloy wires and spanwise wing twist effected by SMA torque tube mechanism, compared to convention hinged control surfaces. This paper presents an overview of the results from the second wind tunnel test performed at the NASA Langley Research Center's 16 ft Transonic Dynamic Tunnel in June 1998. Successful results obtained were: (1) 5 degrees of spanwise twist and 8-12% increase in rolling moment utilizing a single SMA torque tube, (2) 12 degrees of deflection, and 10% increase in rolling moment due to hingeless, contoured aileron, and (3) demonstration of optical techniques for measuring spanwise twist and deflected shape.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    DARPA/ARFL/NASA Smart Wing second wind tunnel test results


    Contributors:
    Scherer, L.B. (author) / Martin, C.A. (author) / West, M. (author) / Florance, J.P. (author) / Wieseman, C.D. (author) / Burner, A.W. (author) / Fleming, G.A. (author)


    Publication date :

    1999


    Size :

    11 Seiten, 8 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    DARPA/AFRL/NASA Smart Wing program: final overview

    Kudva, Jayanth N. / Sanders, Brian P. / Pinkerton-Florance, Jennifer L. et al. | SPIE | 2002


    Overview of the DARPA/AFRL/NASA Smart Wing program

    Kudva, Jayanth N. / Martin, Christopher A. / Scherer, Lewis B. et al. | SPIE | 1999


    Overview of the DARPA/AFRL/NASA Smart Wing Phase 2 program

    Kudva, J.N. / Sanders, B. / Pinkerton-Florance, J. et al. | Tema Archive | 2001


    Design, fabrication, and testing of the DARPA/Wright Lab 'smart wing' wind tunnel model

    Kudva, Jayanth / Appa, Kari / Martin, Christopher et al. | AIAA | 1997


    Contributions of the NASA Langley Research Center to the DARPA/AFRL/NASA/ Northrop Grumman Smart Wing Program

    Florance, Jennifer P. / Burner, Alpheus W. / Fleming, Gary A. et al. | NTRS | 2003