Feasibility Analysis of a Flying Car with In-Wheel Electric Ducted Fans

Markus M. Sailer, David E. Lampl, Sophie F. Armanini

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A majority of known vehicle concepts with driving and flying capabilities are a compromise solution, resulting in drawbacks in both operating modes. An approach based on implementing ducted fans concentrically inside the wheels promises synergies thanks to high functional integration. This article presents and discusses conceptual solutions, design considerations and challenges. Electric propulsion in combination with thorough transmission design allows for high-performance lateral and longitudinal driving dynamics. The same motors can be used for flight. The rims have a double function as duct for the integrated fan, which allows for higher lift generation with a smaller fan diameter. The in-wheel electric ducted fan unit is tilted for flight mode. This enables Vertical Take-Off and Landing (VTOL), allows for vertiport usage, and offers time-saving potential in case of traffic congestion. The presented mission reflects this use case. The feasibility of two different electric designs is assessed with a design approach involving Monte Carlo Simulations. A feasibility assessment framework based on momentum theory shows that even best-case setups imply infeasible requirements for battery technology. Thus, a turbo-electric approach is sized with an empty weight model respecting car properties and performance characteristics of modern helicopter engines. The obtained design is further analyzed with regard to noise emissions and time savings potential. A parameter study adds confidence in the feasibility statement.

Original languageEnglish
Title of host publicationAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624107047
DOIs
StatePublished - 2023
EventAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023 - San Diego, United States
Duration: 12 Jun 202316 Jun 2023

Publication series

NameAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023

Conference

ConferenceAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
Country/TerritoryUnited States
CitySan Diego
Period12/06/2316/06/23

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