The analysis and design of GNC (Guidance, Navigation, and Control) algorithms of winged reentry vehicles like Hermes is based on the knowledge of aerodynamic forces and torques. The properties, i.e., the coefficients for the prediction of aerodynamic coefficients and their derivatives, is one of the most difficult tasks. This is due to the complex coupling beteen kinematics, aerodynamics, and thermodynamics. An understanding of the interdependencies is needed to enable a realistic analysis of flight performance and flight qualities. The prediction of aerodynamic properties is generally obtained by numerical methods. The verification of the results is acquired by wind tunnel tests. In practice the verificiation turns out to be rather difficult mainly due to the lack of wind tunnel capability to simulate the correct Reynolds and Mach number ranges. An alternative method to obtain aerodynamic coefficients and their derivatives is to perform free flight tests with a scaled down flight model. Predefined maneuvers are executed. The offline analyses of flight data provides the unknown coefficients. To prove the feasibility of this method is one of the main objectives of the FALKE project.
FALKE: Winged Re-Entry Vehicle Flight Control
1991
6 pages
Report
Keine Angabe
Englisch
FALKE - 13N14771 : Abschlussbericht
TIBKAT | 2022
|Abschlußbericht zum Projekt FALKE
TIBKAT | 1994