Effects of Aerodynamic Angular-Rate Nonlinearities on Missile Dynamic Stability.
Abstract
The effects of aerodynamic damping coefficients nonlinear with angular velocity on the dynamic stability of statically stable configurations of symmetric missiles are investigated analytically and verified via numerical simulations. In particular, the simplest mode of oscillation, single degree of freedom pitching motion, is considered including a restoring moment nonlinear with angle of attack and a damping moment nonlinear with both angle of attack and angular velocity. Averaging methods are used to obtain an approximate expression for the frequency and amplitude variations with time. It is noted that the internal mass distribution (moment of inertia) can be a critical factor in the interpretation of dynamic stability characteristics from single degree of freedom wind tunnel tests, especially when employing light-weight models. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1971
- Accession Number
- AD0727113
Entities
People
- Thomas A. Clare
Organizations
- Naval Surface Warfare Center Dahlgren Division