Accession Number:

ADA099331

Title:

Prediction of Supersonic Store Separation Characteristics Including Fuselage and Stores of Noncircular Cross Section. Volume III. Appendices A and B, Details of Program I.

Descriptive Note:

Final rept. Jun 75-Feb 80,

Corporate Author:

NIELSEN ENGINEERING AND RESEARCH INC MOUNTAIN VIEW CA

Report Date:

1980-11-01

Pagination or Media Count:

207.0

Abstract:

Detailed instructions are presented for using a computer program which calculates the six-degree-of-freedom trajectories of external stores which are separated from fighter-bomber type aircraft flying at supersonic speeds. Multiple circular or elliptic store configurations may be handled. Parent aircraft configurations may consist of a circular or arbitrary cross section fuselage with ramp external compression inlets, and a wing, pylon, and rack. The program uses linear potential-flow theory to model the wing and pylon loading and thickness. Three-dimensional line sources and doublets are used to model circular fuselages and stores. The noncircular fuselage and elliptic store surfaces are modeled with constant source panels. Nonlinear corrections are made to the wing, fuselage, rack, store and fuselage inlet models to simulate shocks. The program also calculates the trajectory of the store as it separates from the aircraft. This report describes the program, presents instructions for preparing input for the program, describes the output from the program, and presents a sample case. The program represents an extension of an earlier program restricted to circular bodies at supersonic speeds. This volume presents the detailed descriptions of the calculations performed in each of the subroutines in Program I. Also included are the descriptions of each of the variables passed between routines.

Subject Categories:

  • Bombers
  • Attack and Fighter Aircraft
  • Computer Programming and Software
  • Armor
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE