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Development of Control Laws for a Large Multi-Rotor eVTOL Using RPM, Collective, and Cyclic Control Allocation Methods

Syed Zuhair Ali Razvi, Richard Anderson, Kyle Collins, Patric Hruswicki, Shivansh Agrawal, Vivek Saini, Riccardo Roiati, Nishant Sharma, Xinyu Yang, Embry-Riddle Aeronautical University

https://doi.org/10.4050/F-0079-2023-18196

Abstract:
The Eagle Flight Research Center (EFRC) at Embry-Riddle Aeronautical University (ERAU) is investigating the handling qualities of partial and full rotor failure modes of a multi-rotor employing distributed electric propulsion (DEP) systems in Advance Air Mobility (AAM) aircraft vehicles. The handling characteristics for the operation of these vehicles in private and commercial industries require a deeper understanding of their dynamics and controllability under rotor failure conditions. The objective of the research performed at the EFRC centers around designing and testing different thrust and moment control allocation methods for an electric Vertical Take-Off and Landing (eVTOL) vehicle, in addition to assessing their performance in both nominal and failure modes of operation. This paper focuses on developing the vehicle dynamic models and various Control Law (CLAW) architectures for a full-scale quadrotor testbed vehicle with RPM, collective, and cyclic blade pitch control allocation. The study uses simulation and flight-test data to evaluate the theoretical and experimental concepts proposed for the testbed vehicle. The performance of the developed control laws is compared in simulation and flight tests to conclude that collective plus cyclic control provides better response time in yaw control and it is the only control law that makes it possible to operate the vehicle during a rotor out condition


Development of Control Laws for a Large Multi-Rotor eVTOL Using RPM, Collective, and Cyclic Control Allocation Methods

  • Presented at Forum 79
  • 14 pages
  • SKU # : F-0079-2023-18196
  • Unmanned VTOL Aircraft and Rotorcraft

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Development of Control Laws for a Large Multi-Rotor eVTOL Using RPM, Collective, and Cyclic Control Allocation Methods

Authors / Details:
Syed Zuhair Ali Razvi, Richard Anderson, Kyle Collins, Patric Hruswicki, Shivansh Agrawal, Vivek Saini, Riccardo Roiati, Nishant Sharma, Xinyu Yang, Embry-Riddle Aeronautical University