Date(s): Wednesday, March 9 | 2:30 pm – 3:30 pm
Rotor Safety Challenge (RSC)
Tracks: Operations, Pilot, Safety
Instructor: Cliff Johnson, FAA; Paola Zanella, Georgia Institute of Technology; and Julian Babel, Systems Enginuity
During the past few decades, the National Transportation Safety Board has identified an increasing number of rotorcraft accidents, with the percentage of accidents due to loss of control having almost doubled since 1964. There is a lack of understanding and a variety of opinions within the rotorcraft community about the onset of several flight conditions related to loss of control, primarily the physics of abnormal conditions such as vortex ring state, loss of tail-rotor effectiveness, and retreating blade stall. This session aims to dispel some of the myths surrounding the physics of these conditions by explaining the aerodynamics behind them via modeling while also highlighting a formula for developing reliable safety metric definitions. Through this safety metric event-detection strategy, operators can recognize their proximity to loss-of-control events, thus promoting risk mitigation and improving safety analysis techniques for interpreting helicopter flight data.
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