1. In-Flight Test Campaign to Validate PIO Detection and Assessment Tools
- Author
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Michael Jones, Marc Alexander, Marc Höfinger, Miles Barnett, Perry Comeau, and Arthur Gubbels
- Subjects
rotorcraft ,pilot-induced oscillations ,rotorcraft pilot couplings ,flight test ,Motor vehicles. Aeronautics. Astronautics ,TL1-4050 - Abstract
This paper describes a joint research campaign conducted by the German Aerospace Center (DLR) and the National Research Council Canada (NRC) to explore methods and techniques to expose rotorcraft pilot-induced oscillations (PIOs) during flight testing. A flight test campaign was conducted at NRC using the Bell 205 experimental aircraft. Results show that, particularly for the lateral axis, ADS-33 tasks can be successfully applied to expose PIO tendencies. Novel subjective and objective criteria were used during the test campaign. PIO prediction boundaries of the objective phase-aggression criteria (PAC) detection algorithm were validated through results obtained. This was the first use of PAC with data recorded in-flight. To collect subjective feedback, the aircraft–pilot coupling (APC) scale was used. This was the first use of the novel scale in-flight and received favourable feedback from the evaluation pilot. Modifications to ADS-33 mission tasks were found to successfully improve the ability to consistently expose PIOs.
- Published
- 2020
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