Improved Solids Modeling for Axisymmetric Projectile Design
Abstract
Accurate solids modeling plays an important role in the design and analysis of spin and fin stabilized projectiles. In particular, accurate knowledge of a projectile's mass, center of gravity, and its axial and transverse moments of inertia are important for stability and trajectory calculations. In practice, however, error sources exist with existing solids modeling techniques with respect to the determination of the mass properties of internal and external radii (ogives), which until now could not be calculated with a closed-form solution. To address this issue, the generalized closed-form solution for the mass, axial, and transverse moments of inertia, and the center of gravity for radii is developed and the definite integrals presented. The resulting solutions are surprisingly simple to incorporate into a solids modeling package, and the input parameters are few and standardized for all forms of radii, both internal and external.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA278638
Entities
People
- Steven M. Buc
Organizations
- System Planning Corporation