Accession Number:

AD1141614

Title:

A High-Fidelity, Roll-Dependent Aerodynamic Model for a Long-Range, High-Speed Missile

Descriptive Note:

[Technical Report, Technical Report]

Corporate Author:

U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Report Date:

2021-07-01

Pagination or Media Count:

45

Abstract:

Several methods are applied to capture the roll-dependent aerodynamics of a high-speed missile. An inviscid computational fluid dynamics CFD solver is used over a large targeted test matrix to capture the effects of Mach number, angle of attack, actuator deflections, and aerodynamic roll on the aerodynamic forces and moments. In order to deploy the model to a simulation environment, the CFD results are smoothed using Fourier series, then fit to polynomial expansions in extensive tables. In order to support prediction of four independently controlled actuators, the effects due to deflection are modeled in a local actuator frame, then assembled in the body frame using superposition. The assembled model is validated through comparisons with an additional inviscid CFD prediction and wind tunnel data.

Descriptors:

Subject Categories:

  • AERODYNAMICS

Distribution Statement:

[A, Approved For Public Release]