Accession Number:

ADA106065

Title:

Evaluation of USSAERO and HABP Computer Codes for Aerodynamic Predictions for Slender Bodies.

Descriptive Note:

Final rept. Oct 79-Jul 80,

Corporate Author:

AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Flaherty,Jack I.

Report Date:

1981-09-01

Pagination or Media Count:

105.0

Abstract:

This study has been conducted to evaluate the merits and limitations of a subsonic and a supersonic analysis method used frequently in Government and Industry for predicting aerodynamic characteristics. Specifically the Unified Subsonic-Supersonic Aerodynamic Computer Program USSAERO was evaluated at Mach 0.4 for the subsonic case. The Supersonic-Hypersonic Arbitrary Body Program HABP was evaluated for the supersonic case beginning at a low Mach number of 1.50 and systematically increasing to Mach 4.63. Model geometries have been restricted to simple axisymmetric ogive forebody cylindrical afterbody combinations to aid in the relative comparison of the method capabilities. For the supersonic comparisons a data base was selected that featured a wide variety of nose bluntness and fineness ratios to determine their impact on the analysis capabilities. Specific limitations of the methods are identified from comparisons with detailed body pressure coefficient data. Author

Descriptors:

• *COMPUTERIZED SIMULATION
• *SLENDER BODIES
• *AERODYNAMIC CHARACTERISTICS
• DATA BASES
• COMPUTER PROGRAM DOCUMENTATION
• FLOW FIELDS
• GEOMETRIC FORMS
• COEFFICIENTS
• SUBSONIC CHARACTERISTICS
• MACH NUMBER
• SUPERSONIC CHARACTERISTICS
• FLUID FLOW
• NOSE CONES

Subject Categories:

• Computer Programming and Software
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE