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Flight Dynamics and Control of an eVTOL Concept Aircraft with a Propeller-Driven Rotor

Umberto Saetti, Georgia Institute of Technology
Jacob Enciu, Joseph F. Horn, Pennsylvania State University

October 10, 2020

https://doi.org/10.4050/F-0076-2020-16385

Abstract:
The objective of this investigation is three-fold. First, to assess the flight dynamics of an electric Vertical Take-Off and Landing (eVTOL) concept aircraft with a propeller-driven rotor. Second, to develop a Stability and Control Augmentation System (SCAS) for this concept aircraft. Third, to verify the potential safety benefits of the concept aircraft by analyzing the autorotation performance following a total loss of power. The paper begins with a description of the simulation model, including a detailed discussion on the inflow model of the propellers that drive the main rotor. Next, the flight dynamics are assessed at hover and in forward flight. A SCAS based on Dynamic Inversion (DI) is developed to provide stability and desired response characteristics about the roll, pitch, yaw, and heave axes for speeds ranging from hover to 80 kts. Additionally, an RPM governor is implemented to hold the main rotor angular speed constant at its nominal value. Finally, simulations that make use of the SCAS are performed to analyze the autorotation performance following total loss of power.


Flight Dynamics and Control of an eVTOL Concept Aircraft with a Propeller-Driven Rotor

  • Presented at Forum 76
  • 13 pages
  • SKU # : F-0076-2020-16385
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Flight Dynamics and Control of an eVTOL Concept Aircraft with a Propeller-Driven Rotor

Authors / Details: Umberto Saetti, Georgia Institute of Technology
Jacob Enciu, Joseph F. Horn, Pennsylvania State University