Evaluation of Reduced-Order Aerodynamic Models for Transonic Flow over a Multiple-Swept Wing Configuration
Mehdi Ghoreyshi (USAF Academy)
Pooneh Aref (USAF Academy)
Anastasios Panagiotopoulos (TU Delft - Aerospace Engineering)
Steven Hulshoff (TU Delft - Aerodynamics)
Michel van Rooij (Royal Netherlands Aerospace Centre)
Peter Hans Leonard Blom (TU Delft - Aerospace Engineering, Royal Netherlands Aerospace Centre)
Mario Stradtner (Deutsches Zentrum für Luft- und Raumfahrt (DLR))
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
This study is a collaborative effort within the NATO Science & Technology Organization, bringing together multiple institutions to advance reduced-order modeling. Aerodynamic reduced-order models were developed using two pseudorandom binary sequence (PRBS) training maneuvers, where the angle of attack and pitch rate varied in a periodic, deterministic manner with white-noise-like properties. The first maneuver maintained a constant Mach number of 0.85, while the second varied Mach from 0.1 to 0.9. The test case involved a generic triple-delta wing, simulated using the DoD HPCMP CREATE™-AV/Kestrel/Kestrel tools. Prescribed-body motion was used to vary input parameters under given freestream conditions. The resulting models predicted static and stability derivatives across different angles of attack and Mach numbers. They were also used to predict aerodynamic responses to arbitrary motions, including sinusoidal, chirp, Schroeder, and step inputs, showing good agreement with full-order data. Additionally, models predicting surface pressure accurately captured upper surface pressures across different spanwise and chordwise locations for both static and dynamic conditions.