Zero-lift drag characteristics of afterbodies with a square base

Viswanath, PR and Patil, SR (1997) Zero-lift drag characteristics of afterbodies with a square base. Journal of Spacecraft and Rockets, 34 (3). pp. 290-293. ISSN 0022-4650

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    Results of zero-lift drag characteristics of afterbodies with a square base relevant to missile and projectile applications at several transonic Mach numbers and Mach 2 are presented. These afterbodies, at zero incidence, generate vortical flows upstream of the base like that on the lee side of a delta wing at incidence. The measurements made consisted primarily of afterbody drag using a balance and base pressure and extensive surface flow visualization studies were carried out to infer features associated with vortex flows. Results of base pressure, boat-tail profile drag, and total afterbody drag are presented and compared with results from the axisymmetric counterpart involving circular arc and conical boat tailing having the same base area. Some aspects of the flow features on square-base afterbodies are discussed as well.

    Item Type: Journal Article
    Additional Information: Copyright for this article belongs to AIAA
    Uncontrolled Keywords: Zero lift;Aerodynamic drag;Afterbodies;Missile bodies;Supersonic flight;Transonic flight characteristics;Zero angle of attack;Vortices;Delta wings; Flow visualisation;Base pressure
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Experimental Aerodynamics Division, Experimental Aerodynamics Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 09 Mar 2010
    Last Modified: 24 May 2010 09:51

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