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Development and Flight Validation of Proposed Unmanned Aerial System Handling Qualities Requirements

Christina M. Ivler, Declan Kerwin, Joel Otomize, Danielle Parmer, Kevin Truong, University of Portland
Norma Gowans, SJSURF
Mark B. Tischler, US Army Combat Capabilities Development Command AvMC

October 10, 2020

https://doi.org/10.4050/F-0076-2020-16399

Abstract:
Unmanned aerial systems, commonly known as drones, present new opportunities to perform autonomous tasks. Handling qualities requirements for manned vertical lift aircraft have been well defined and documented. The need to define handling qualities requirements for Vertical Takeoff and Landing (VTOL) Unmanned Aerial Systems (UAS) to meet mission demands is of paramount importance for all potential operators and procurement agencies. One way to relate handling qualities specifications of large-scale manned and sub-scale unmanned aircraft is through Froude dynamic scaling. Froude dynamic scaling based on hub-to-hub distance has shown great promise in relating the natural frequencies of scaled multicopters. There have been recent efforts to develop a VTOL-UAS handling qualities standard by scaling Mission Task Elements and rating their performance through a Trajectory, Tracking and Aggression (TTA) score. This paper proposes a new performance standard adapted from the TTA scoring method, along with a modified Cooper-Harper scale as a VTOL-UAS handling qualities framework that is consistent with the spirit of ADS-33. These newly proposed performance standards were then validated through simulation and flight testing on a small hexacopter UAS, flown at the University of Portland. A key outcome of this work is the flight verification of a key dynamic response metric, the disturbance rejection bandwidth, and associated validation of Froude scaling for predicted handling qualities metrics.


Development and Flight Validation of Proposed Unmanned Aerial System Handling Qualities Requirements

  • Presented at Forum 76
  • 24 pages
  • SKU # : F-0076-2020-16399
  • Handling Qualities

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Development and Flight Validation of Proposed Unmanned Aerial System Handling Qualities Requirements

Authors / Details:
Christina M. Ivler, Declan Kerwin, Joel Otomize, Danielle Parmer, Kevin Truong, University of Portland
Norma Gowans, SJSURF
Mark B. Tischler, US Army Combat Capabilities Development Command AvMC