Accession Number : ADA117313

Title :   Computations of Projectile Magnus Effect at Transonic Velocities.

Descriptive Note : Conference paper,


Personal Author(s) : Nietubicz,Charles J ; Sturek,Walter B ; Heavey,Karen R

PDF Url : ADA117313

Report Date : 18 Jun 1982

Pagination or Media Count : 15

Abstract : The accurate prediction or experimental determination of projectile aerodynamics is of significant importance to the shell designer and ballistician. The shell desinger requires accurate aerodynamic data for the overall development of new shell. The ballistician is concerned with the development of aiming data and therefore relies heavily on accurate aerodynamic data. Experimental costs have sky rocketed in recent years and have contributed significantly to overall system development costs. Computational techniques are beginning to show promise as a means to alleviate or at least temper these rising development costs by providing relatively low cost computer analysis of new designs. As computer technology increases and machines become faster with larger memory, the use of computational methods in design becomes more of a reality. In this paper, recent results are presented for Magnus force computatison using the Cray IS computer. Comparisons are made with the earlier CDC computer results and are further compared to some limited experimental data. A discussion of the numerical technique is included. These results represent the first computations of the Magnus effect on projectile shapes in the transonic flight regime.

Descriptors :   *Magnus effect, *Projectiles, *Aerodynamic characteristics, *Computations, Computer aided diagnosis, Transonic flow, Boattail afterbodies, Viscous flow, Inviscid flow, Numerical methods and procedures, Numerical analysis, Velocity

Subject Categories : Numerical Mathematics
      Ammunition and Explosives
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE