Because the results of preliminary flight tests had indicated that the P-63A-1 pursuit possessed insufficient directional stability, vertical-tail modifications, including an enlarged vertical tail, were suggested. The enlarged vertical tail involved only a slight increase in total vertical-tail area from 23.75 to 26.58 square feet, but a relatively much larger increase in geometric aspect ratio from 1.24 to 1.73. Tests results showed that the enlarged vertical tail approximately doubled the directional stability.


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    Title :

    Flight Investigation of Effect of Various Vertical-Tail Modifications on the Directional Stability and Control Characteristics of the P-63A-1 Airplane (AAF No. 42-68889)


    Contributors:
    I.H Johnson (author)

    Publication date :

    1946


    Size :

    41 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English