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Crashworthiness of a Lift plus Cruise eVTOL Vehicle Design within Dynamic Loading Environments

Jacob Putnam, Justin Littell, NASA Langley Research Center

October 10, 2020

https://doi.org/10.4050/F-0076-2020-16258

Abstract:
To aid in the development of electric Vertical Take-off and Landing (eVTOL) technology, the National Aeronautics and Space Administration has undertaken research initiatives to evaluate and optimize design features of eVTOL aircraft. One such initiative has been to develop energy attenuating design mechanisms to improve eVTOL vehicle crashworthiness. In this study, crashworthiness design mechanisms, implemented within a six-passenger lift plus cruise (LPC) eVTOL concept vehicle, were evaluated under multi-axis dynamic loading conditions. This work builds upon crashworthiness design concepts previously optimized within a simplified vehicle-loading environment. The results of this study found the effectiveness of energy attenuating design mechanisms to be dependent on the complexity of load environment in which they were employed. An increase in off-axis loading resulted in a decrease in occupant protective capability. These results indicate the necessity for evaluating vehicle design across the range of possible dynamic impact conditions to characterize crashworthiness. This work provides preliminary methodology for implementing energy attenuating design mechanisms and evaluating crashworthiness for future UAM markets.


Crashworthiness of a Lift plus Cruise eVTOL Vehicle Design within Dynamic Loading Environments

  • Presented at Forum 76 - Best Paper for this session
  • 11 pages
  • SKU # : F-0076-2020-16258
  • May 2021 Paper of the Month.

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Crashworthiness of a Lift plus Cruise eVTOL Vehicle Design within Dynamic Loading Environments

Authors / Details: Jacob Putnam, Justin Littell, NASA Langley Research Center