SYSTEMS TO INCREASE SAFETY IN HELICOPTER AUTOROTATION
Research is focusing on helicopter flight dynamics and guidance with the aim to develop a series of visual, auditory, and haptic sensory cues; to allow helicopter pilots to perform the emergency helicopter autorotation manoeuvre safely and reliably throughout the flight envelope. Piloted flight simulation tests of the cueing techniques at Liverpool’s HELIFLIGHT-R full-motion simulator demonstrated the potential to offer a significant enhancement in safety throughout the rotorcraft industry. The research work is conducted in close collaboration with School of Engineering, Georgia Institute of Technology, USA primarily funded by The US Army Aviation and Missile Research Development and Engineering Center (AMRDEC).
NONLINEAR ESTIMATION FOR NAVIGATION SOLUTIONS USING INS/GNSS DATA FUSION
Nonlinear estimation of navigation data under harsh operational environment by fusing the inertial data (accelerometer and gryo) with the GNSS measurements. Two new nonlinear estimation schemes using extended Kalman filter (EKF) are developed and compared with the nonlinear observer (NLO).
NONLINEAR CONTROL AND ACTIVE LOAD ALLEVIATION FOR FLEXIBLE AIRCRAFT
Lightweight flexible aircraft suffers from unwanted oscillatory vibrations during aircraft manoeuvres. The research work involves developing various controllers to actively alleviate the wingroot loading in terms of reducing the wingroot moments and forces. The high-fidelity dynamic model of the flexible aircraft is provided through the final outcomes of NACRE and ACFA2020 project funded by European Commission's FP5 and FP7 Research and Innovations Framework.
Nonlinear control technique using nonlinear dynamic inversion (NDI) or partial feedback linearization applied to control the rigid-body aircraft dynamic.