Handling qualities studies into the interaction between active sidestick parameters and helicopter response types

Results of the pilot assistance system “Assisted Low-Level Flight and Landing on Unprepared Landing Sites” obtained with the ACT/FHS research rotorcraft

“…The general results of the joint US-German research are described in Refs. [41,42]. It could be shown that the force-feel behavior strongly influences the handling qualities.…”

US-German Joint In-flight and Simulator Evaluation of Collective Tactile Cueing for Torque Limit Avoidance - Shaker vs. Soft Stop

“…In Germany DLR would normally utilize the Flying Helicopter Simulator (ACT/FHS) with a short pole active side stick, but is currently limited to use of the ACT/FHS ground based simulation for this research. Both organizations share their individual experience in tactile cueing, as for example obstacle avoidance [14] or landing guidance through coupled controls [15], [16] and complementary research on the influence of the active inceptor force-feel characteristic on the handling qualities [17], [18].…”

Analysis of Rotorcraft Pilot-Induced Oscillations Triggered by Active Inceptor Failures

“…3 It has also been demonstrated in various studies that the handling qualities (HQs) of a helicopter may be optimized using AIS through adaptation of their FCMC to the aircraft dynamics. 4 Until recently, AIS have been limited to technology demonstrators and experimental aircraft. However a number of new rotorcraft programs, such as the Bell-525 5 and CH-53K, 2 use AIS as the primary method of control.…”