A 1/7.06 full-size model of the NC-type hull was tested in the N.A.C.A. tank by both the general method and the specific or free-to-trim method. The results of the tests are given in curves plotted as non dimensional coefficients and are compared with the test results of N.A.C.A. model 11-A. The NC model (N.A.C.A. model 44) shows higher resistance than model 11-A at hump speed but lower resistance at high speeds. Model 44 has a higher best trim angle at the jump and a lower maximum positive trimming moment than model 11-A. At high speeds the best trim angle and the trimming moments of the two models are approximately the same.


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    Title :

    Tank Tests of a Model of the NC Flying-boat Hull - N.A.C.A. Model 44


    Contributors:
    Bell, Joe W (author)

    Publication date :

    1936-05-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English