Flight measurements of internal cockpit pressure have been made in several fighter-type airplanes equipped with either conventional or bubble canopies. Data are presented showing the variation in cockpit pressure with indicated airspeed and angle of sideslip for both the canopy-closed and the canopy-open conditions. The effect of admitting the cockpit ventilating air is shown for one airplane. The change in cockpit pressure accompanying a change in engine power is shown to be small. Data are presented showing the variation of cockpit pressure with normal acceleration at a constant value of free-stream impact pressure. At a given lift coefficient the cockpit pressure expressed as a fraction of free-stream impact pressure above free-stream static pressure is shown to be independent of normal acceleration. A method is outlined for predicting the cockpit pressure in accelerated flight from measurements made in unaccelerated flight.


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    Title :

    Flight Measurements of Internal Cockpit Pressures in Several Fighter- Type Airplanes


    Contributors:

    Publication date :

    1947


    Size :

    31 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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