Six degree of freedom simulation of fluid payload projectiles using numerically computed fluid moments

Technical Report · Mon Jul 01 00:00:00 EDT 1985

OSTI ID:5365012

Vaughn, H R; Wolfe, W P; Oberkampf, W L

A flight trajectory simulation method has been developed for calculating the six degree of freedom motion of fluid filled projectiles. Numerically calculated internal fluid moments and experimentally known aerodynamic forces and moments are coupled to the projectile motion. Comparisons of predicted results with flight test data of an M483 155mm artillery projectile with a highly viscous payload confirm the accuracy of the simulation. This simulation clearly shows that the flight instability is due to the growth of the nutation component of angular motion caused by the viscous effects of the fluid payload. This simulation procedure, when used in conjunction with the previously developed method for calculating internal fluid moments, allows the designer to examine the effects of various liquid payloads and container geometries on the dynamic behavior of flight vehicles.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5365012
• Report Number(s): SAND-85-1166; ON: DE85017183
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
ORDNANCE
AERODYNAMICS
PROJECTILES
EQUATIONS OF MOTION
FLUIDS
INSTABILITY
SIMULATION
TRAJECTORIES
DIFFERENTIAL EQUATIONS
EQUATIONS
EQUIPMENT
FLUID MECHANICS
MECHANICS
MILITARY EQUIPMENT
PARTIAL DIFFERENTIAL EQUATIONS
450000* - Military Technology
Weaponry
& National Defense