Survey of Variable Stability Helicopter Applications in Handling Qualities Research

Applications of Variable Stability Systems (VSS) rotorcraft are motivated by client requirements. Areas may include vehicle and technology development, concept demonstration, regulatory standards investigations, and training programs. A survey of civilian Canadian and European full-authority VSS rotorcraft (NRC Bell 205A Airborne Simulator, NRC Bell 412 Advanced Systems Research Aircraft, and DLR EC 135 Active Control Technology/Flying Helicopter Simulator) presents an overview of facilities, applications, operational challenges, and lessons learned. The breadth of scientific capability highlights the potential of these modern facilities to support development of next generation aeronautical and aerospace products.