Moment exerted on a coning projectile by a spinning liquid in a spheroidal cavity
Abstract
Liquid moment coefficients are computed for fully filled spheroidal cavities as a function of fineness ratio, coning frequency, and Reynolds number. It is shown that only one eigenfrequency is important for side-moment calculations and that it can have an adverse effect on flight stability for a very limited range of fineness ratios (between 1 and 1.5). It is also noted that the amplitudes of liquid side-moment coefficients for spheroidal cavities are very similar to those for cylindrical cavities with the same primary resonance frequency.
- Publication:
-
AIAA Journal
- Pub Date:
- December 1987
- DOI:
- 10.2514/3.9837
- Bibcode:
- 1987AIAAJ..25.1631M
- Keywords:
-
- Liquid Filled Shells;
- Moment Distribution;
- Projectiles;
- Rotating Liquids;
- Turning Flight;
- Accuracy;
- Inviscid Flow;
- Proving;
- Spheroids;
- Fluid Mechanics and Heat Transfer