Aerodynamic Modeling Using Flight Data

摘要

Systems and methods are described for development of a nonlinear global aerodynamic model using fuzzy logic modeling as well as multivariate orthogonal function modeling with splines. The systems and methods described herein may be utilized to more quickly develop a global aerodynamic model of an aircraft, allowing for development of a global aerodynamic model of an aircraft in real-time, during a test flight, and reducing time and cost associated with the model development.

主权项

1. A method of modeling aircraft aerodynamics, comprising:
receiving an indication of control inputs at a full-scale aircraft during a test flight; responsive to the control inputs, obtaining sensor data from one or more sensors on the aircraft during the test flight; selecting one or more explanatory variables from the sensor data; calculating one or more membership functions for each of the one or more explanatory variables; defining a plurality of fuzzy cell internal functions, wherein a fuzzy cell internal function from the plurality of fuzzy cell internal functions comprises a membership function, from the one or more membership functions; determining a model output as a weighted sum of the plurality of fuzzy cell internal functions; and predicting an aerodynamic performance characteristic of the aircraft using the model output.