Extracting aerobomb's aerodynamic drag coefficient curve from theodolite data via iterative learning

Abstract Extracting aerobomb's aerodynamic drag coefficient curve C df from 3-dimensional theodolite film data is formulated as an optimal tracking control problem (OTCP), where the C df the control function and the flight testing data are the desired trajectories. An Iterative Learning method is introduced to solve this OTCP efficiently. The convergence is shown to be robust to the initial control guess. For a better convergence performance, several choices of learning gains have been discussed. Results from actual flight testing data for three bombing flight paths have been presented to validate the effectiveness of the proposed iterative learning scheme.