Optimal control techniques for V/STOL flight experiment design

The use of optimal control techniques in the design of flight experiments employing the X-22A variable stability V/STOL aircraft is discussed. To emphasize the evolution of optimal control methodologies from the specialist´s domain to a general design tool, the discussion concentrates on the application of existing procedures rather than on new theoretical developments. In particular, three different applications of the linear quadratic control theory are outlined, and flight and ground simulation results discussed, to demonstrate practical design answers which may be determined with these procedures.