An investigation of cowlings for long-nose radial engines was made on the Curtiss XP-42 fighter in the NACA full-scale wind tunnel. The unsatisfactory aerodynamic characteristics of all the cowlings with scoop inlets tested led to the development of the annular high-velocity inlet cowlings. Tests showed that ratio of cooling-air velocity at cowling inlet to stream velocity should not be less than 0.5 for this type of cowling and that critical compressibility speed can be extended to more than 500 mph at 20,000 ft altitude.


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    Titel :

    Development of Cowling for Long-Nose Air-Cooled Engine in the NACA Full- Scale Wind Tunnel


    Beteiligte:
    A. Silverstein (Autor:in) / E. R. Guryansky (Autor:in)

    Erscheinungsdatum :

    1941


    Format / Umfang :

    17 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Development of cowling for long-nose air-cooled engine in NACA full-scale wind tunnel

    Silverstein, A. / Guryansky, E.R. | Engineering Index Backfile | 1941




    Full-Scale Tests of a New Type NACA Nose-Slot Cowling

    Theodorsen, Theodore / Brevoort, M J / Stickle, George W et al. | NTRS | 1937


    Air-Cooled Engine Cowling

    North, J.D. | Emerald Group Publishing | 1934