United States Department of Transportation
i
Investigation of Certification Considerations for Distributed Electric Propulsion (DEP) Aircraft [2024]
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2024-10-01
[PDF-2.62 MB]
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Edition:Draft Final 6/14/2022-7/31/2024
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Abstract:Efforts from a multi-year investigation examining the use of estimation of remaining vehicle control power margins and external environmental disturbances for distributed electric propulsion (DEP) vehicles as a contributor for vehicle certification are described. This study combines simulation of DEP aircraft with experimental testing of representative models in the assessment of algorithms for determining remaining control power margins in real-time vehicle operation. Additionally, to provide a metric for the capability of the vehicle to accommodate operational disturbances and avoid loss of control in-flight (LOC-I) events. The Comprehensive Hierarchical Aeromechanics Rotorcraft Model (CHARM) analysis for aerodynamic interaction effects on the configurations was used to simulate and characterize vehicle response to disturbances and to applied control inputs throughout its flight envelope. The goal of the effort was to determine the viability of the methods to calculate remaining control power margins and disturbance intensities, and to assess the utility of the methods in safety monitoring of DEP flight operations for both piloted and uncrewed vehicles.
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