Computation of the Roll Characteristics of the M829 Kinetic Energy Projectile and Comparison With Range Data
Abstract
A recently developed computational technique has been applied to predict the aerodynamic roll characteristics of the M829 kinetic energy projectile. These aerodynamic parameters include the roll producing moment, the roll damping moment, and the equilibrium spin rate, defined as the spin rate for which the net roll moment is zero. These aerodynamic parameters have been determined by computing the flow field about the projectile using a parabolized Navier-Stokes computational approach. The computations have been performed using a coordinate frame that rotates at the spin rate of the projectile. Comparisons is made with results obtained experimentally from range firings and from engineering estimation approaches. The computed equilibrium spin rate and the spin histories agree with the data obtained from range firings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1990
- Accession Number
- ADA233175
Entities
People
- Paul Weinacht
- Walter B. Sturek
Organizations
- Ballistic Research Laboratory