Accession Number:

ADA191479

Title:

Simulations of a Missile with Liquid Payload under Launch Conditions

Descriptive Note:

Contractor rept. Sep 1986-Sep 1987

Corporate Author:

FLUID DYNAMICS INTERNATIONAL INC EVANSTON IL

Personal Author(s):

• Rosenblat, Simon

Report Date:

1988-01-01

Pagination or Media Count:

34.0

Abstract:

A numerical simulation of the flow of a liquid in the annular region between two coaxial circular cylinders was performed. This simulation corresponds to the actual behavior of a missile with a liquid payload during its launch phase. The simulation was performed in two parts. The first part was to determine if the payload liquid, which comprised both Newtonian and non- Newtonian fluids, would achieve full spin up relative to the missile during launch. During the second part, the despin moments acting on the spinning and nutating missile with a fully spun up liquid payload were determined from the steady-state Navier-Stokes equations relative to an aeroballistic reference frame. The simulations were performed with a finite element software package FIDAP. The majority of the computations were done on an HP9000 minicomputer some were done on a Microvax workstation. Keywords Computational fluid dynamics, Finite elements.

Descriptors:

• *PAYLOAD
• *LIQUIDS
• COMPUTER PROGRAMS
• MATHEMATICAL MODELS
• COMPUTERIZED SIMULATION
• GUIDED MISSILES
• SIMULATION
• STEADY STATE
• COMPUTATIONS
• FINITE ELEMENT ANALYSIS
• COAXIAL CONFIGURATIONS
• CYLINDRICAL BODIES
• LAUNCHING
• SPINNING(MOTION)
• FLUID DYNAMICS
• NAVIER STOKES EQUATIONS
• CIRCULAR
• NONNEWTONIAN FLUIDS
• FLUID FLOW

Subject Categories:

• Guided Missile Dynamics, Configurations and Control Surfaces
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE