This report contains the results of the aerodynamic evaluation flight tests on HH-53B, USAF Serial Number 66-14433, conducted by the Aerodynamics Branch, Directorate of Flight Test Engineering, 4950th Test Wing, WPAFB, Ohio. These tests were conducted for the Special Projects Division, Specialized Aircraft Program Office, ASD, which was responsible for the program management of the Pave Low III modification on the HH-53B. The objectives of this test were to quantitatively determine the effects of a radome modification on: the stability and control characteristics of the helicopter, changes in the range/cruise and rate of climb/descent performance from a standard HH-53B helicopter, accuracy of the airspeed system, aircraft vibration and air load stresses associated with the radome fairing and supporting structure, and the response characteristics of the standard hydraulic system during maneuvering flight. Longitudinal stability was the only flying quality characteristic of the helicopter that was affected by the radome. The longitudinal damping decreased slightly, but presented no handling problem for the pilot. The range/cruise performance did not change significantly, but the best cruise airspeeds decreased. The climb/descent curves changed somewhat and the airspeed position error curve changed. It was recommended that these new performance curves be incorporated into the flight manual and more extensive performance testing be accomplished if this modification is to become a Class V modification. The radome proved to be structurally sound throughout the original flight envelope of the aircraft.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Pave Low III Aerodynamic Evaluation


    Contributors:

    Publication date :

    1976


    Size :

    87 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Evaluation of Super Pave in Kentucky

    L. J. Fleckenstein / D. L. Allen / R. Reintenour | NTIS | 1999


    Fiber Pave, Polypropylene Fiber

    D. S. Harmelink | NTIS | 1992


    FASTrescue deliverable D3.3c : PAVE database

    Olsman, W. F. J. | TIBKAT | 2017