US Army MC-4/5 ram-air parachutes were tested in the 80- by 120-Ft test section of the National Full-Scale Aerodynamics Complex. Arrays of targets on the upper and lower surfaces of the central cell of the canopies were measured by stereo photogrammetry, and the target positions were used to estimate both the shape of the cell and angle of attack of the canopy. Forces and moments were measured by a six-axis load cell. Based on the photogrammetry and load-cell measurements, the relationships between lift, drag, and angle of attack were determined over a range of trailing-edge flap deflections, front riser lengths, and free-stream airspeeds. This paper describes the test, with an emphasis on the photogrammetry measurements, and presents a summary of results.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Shape and Angle-Of-Attack Measurements of Ram-Air Parachutes by Stereo Photogrammetry in the National Full-Scale Aerodynamics Complex


    Beteiligte:

    Kongress:

    2019 AIAA Aviation and Aeronautics Forum and Exposition ; 2019 ; Indianapolis, IN, United States


    Erscheinungsdatum :

    2019-06-17


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch





    The aerodynamics of parachutes

    Cockrell, David J. | TIBKAT | 1987


    Aerodynamics of Supersonic Parachutes

    C. W. Peterson | NTIS | 1987



    National Full-Scale Aerodynamics Complex, NFAC

    Van Aken, Johannes | AIAA | 2010