Data obtained at the N.A.C.A. tank from tests on the models of three flying-boat hulls - N.A.C.A. models 11-A, 16, and 22 - are used to demonstrate the effect of trim angle on water resistance. A specific example is taken, and data from Model 11-A are used to show that the trim angle giving the minimum water resistance will give minimum total air-plus-water resistance. Total-resistance curves for best trimmed angles and other angles are compared for the same example. The effect of wind on best trim angles and upon the take-off and run is shown by the working of an example. The possibility of using tank data on trim angles as aid in piloting is discussed, and an instrument for use in determining the trim angle of seaplanes is described. The importance of maintaining the best trim angle throughout the take-off is indicated.


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    Title :

    The effect of trim angle on the take-off performance


    Contributors:

    Publication date :

    1934-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English



    Effect of trim angle on take-off performance of flying boat

    Shoemaker, J.M. / Dawson, J.R. | Engineering Index Backfile | 1934


    The effect of trim angle on the take-off performance of a flying boat

    Shoemaker, James M. / Dawson, John R. | TIBKAT | 1934


    Use of trim-angle indicator for seaplane take-off

    Gough, M.N. | Engineering Index Backfile | 1937


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