Computational Aerodynamic Analysis for a Range-Limited 25mm Training Round.
Abstract
A computational aerodynamics study is presented for an initial design configuration intended for use as a training round for a 25mm gun. The shell is designed with a non-axisymmetric boattail which induces a large de-spin moment. The purpose for such a design is to limit the range of the round through aerodynamic destabilization. The paper reports a computational aerodynamics study using a thin-layer Parabolized Navier Stokes computational technique. Static aerodynamic coefficients and roll damping are computed for a range of supersonic Mach numbers and boattail lengths. Comparisons are made with computational predictions for axisymmetric configurations and firing range data. A six degree-of-freedom trajectory simulation code is used to estimate the early flight characteristics for the configurations of interest.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1987
- Accession Number
- ADA185270
Entities
People
- Bernard J. Guidos
- Walter B. Sturek
Organizations
- Ballistic Research Laboratory