IGF::OT::IGF COMPLEX AEROELASTIC AND AEROSERVOELASTIC PHENOMENA CAN BE MODELED ON COMPLETE AIRCRAFT CONFIGU…

Public award description

IGF::OT::IGF COMPLEX AEROELASTIC AND AEROSERVOELASTIC PHENOMENA CAN BE MODELED ON COMPLETE AIRCRAFT CONFIGURATIONS GENERATING MODELS WITH MILLIONS OF DEGREES OF FREEDOM. STARTING FROM A FREELY SUPPORTED VERSION OF THE MODEL, A TWO-STEP MODEL REDUCTION PROCESS IS PROPOSED TO CREATE AEROELASTIC MODELS THAT INCLUDE RIGID BODY DYNAMICS. IN THE FIRST STEP, PROPER ORTHOGONAL DECOMPOSITION AT A SET OF FLIGHT CONDITIONS REDUCES THE MODEL ORDER FROM MILLIONS TO HUNDREDS OF DEGREES OF FREEDOM. IN THE SECOND STEP, A LINEAR MATRIX INEQUALITY FURTHER REDUCES THE ORDER AND CREATES A LINEAR PARAMETER VARYING REDUCED ORDER MODEL. THE MODEL INCLUDES A TRIMMED AND PARAMETERIZED DESCRIPTION OF AEROELASTIC FORCES VALID OVER A REGION OF THE FLIGHT ENVELOP. THE SAME MODEL CAN BE USED FOR RAPID SIMULATION AND FOR LINEAR PARAMETER VARYING FLIGHT CONTROL DESIGN. FEASIBILITY OF THIS TWO-STEP PROCESS HAS BEEN DEMONSTRATED IN THE PHASE I WORK AND A PLAN HAS BEEN DEVELOPED FOR A PROTOTYPE IMPLEMENTATION. SPECIFIC IMPROVEMENTS TO THE RIGID BODY MODEL, TECHNICAL RISKS IN THE DEVELOPMENT EFFORT, AND A RISK REDUCTION PLAN HAVE BEEN IDENTIFIED. AN X-56A VEHICLE MODEL WILL BE DEVELOPED AND THEN USED TO DEMONSTRATE THE MODEL REDUCTION PROCESS AND TO DEMONSTRATE APPLICATIONS INCLUDING A LINEAR PARAMETER VARYING FLIGHT CONTROL SYSTEM.