7 basic types of airplane engines not governmentally approved to date; in each instance, however, engine is awaiting approval pending completion of tests, etc.


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    Title :

    Aircraft engines -- Without approved type certificates


    Additional title:

    Aero Digest


    Published in:

    Aero Digest ; 32 , n 3


    Publication date :

    1938


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English