Accession Number:

ADA040833

Title:

A Program for Computing Steady Inviscid Three-Dimensional Supersonic Flow on Reentry Vehicles. Volume I: Analysis and Programming

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL SURFACE WEAPONS CENTER WHITE OAK LAB SILVER SPRING MD

Personal Author(s):

• Solomon, J. M.
• Ciment, M.
• Ferguson, R. E.
• Bell, J. B.
• Wardlaw, Jr, A. B.

Report Date:

1977-02-11

Pagination or Media Count:

232.0

Abstract:

A comprehensive computational procedure is presented for predicting the supersonic region of the flow field on advanced reentry vehicle shapes in steady flight at pitch and yaw. The procedure utilizes explicit second order accurate finite difference methods applied to the conservation law form of the steady inviscid flow equations. Improved numerical methods are used at the body surface and the bow shock wave. Provisions for treating body geometries with discontinuous slopes are also included. Either perfect gas or real gas equilibrium thermodynamic properties can be used. The computational procedure is implemented as a FORTRAN computer code which provides a practicable representation of the inviscid flow field and the resulting aerodynamic force and moment on the vehicle. In this report the analytical and numerical development of the procedure is presented and the associated computer code is described. A comparison report contains detailed instructions for operating the code and interpreting the output results.

Descriptors:

• *COMPUTER PROGRAMMING
• *INVISCID FLOW
• *REENTRY VEHICLES
• BOUNDARY VALUE PROBLEMS
• BOW SHOCK
• COMPUTER PROGRAMS
• CONTROL SURFACES
• FINITE DIFFERENCE THEORY
• FLIGHT CONTROL SYSTEMS
• FLOW FIELDS
• FORTRAN
• HYPERBOLAS
• HYPERSONIC FLOW
• MACHINE CODING
• MATHEMATICAL PREDICTION
• PITCH(MOTION)
• SHAPE
• SHOCK WAVES
• STEADY STATE
• SUBROUTINES
• SUPERSONIC FLOW
• THREE DIMENSIONAL FLOW
• YAW

Subject Categories:

• Computer Programming and Software
• Guided Missile Reentry Vehicles
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE