AVMS H-47 Chinook with APAS Tactile Cueing Demonstration Results

This paper describes selected benefits of Adaptive Vehicle Management System (AVMS) tactile-cueing technologies that were demonstrated using an MH-47G Chinook equipped with an Active Parallel Actuator Subsystem (APAS). Rather than immediately proceeding to a full-authority Fly-By-Wire (FBW) system, the APAS adds tactile cueing and backdrive capabilities while retaining the existing Chinook hydromechanical primary flight controls with partial-authority augmentation. The flight-tested AVMS technologies include Carefree Maneuvering, Regime Recognition, and Task-Tailored Control Laws. Both simulation and flight test results are presented using technical performance metrics and pilot comments. Features of the APAS and AVMS control law software are described. The flight testing not only demonstrated the value of the technology, but also reduced technical risk to facilitate technology transition into a production environment. Having been successfully demonstrated in a flight environment, the AVMS and APAS technologies are transitioning into advanced development and qualification.