What is it about?

Accurate range estimation is vital for aviation, traditionally relying on the Breguet equation and fuel consumption. However, electric aircraft present a unique paradigm - while their mass remains constant, they suffer from non-linear energy dissipation due to battery voltage drop. This study introduces an analytical equation that captures these dynamic electrochemical effects without complex simulations, improving range prediction accuracy by over 8.5% compared to traditional methods.

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Why is it important?

We derive a handy analytical equation for electric aircraft range estimation that incorporates dynamic energy dissipation. This is vital for the transition to carbon-neutral aviation, where current battery energy density limits demand high-precision mission planning. Two significant findings are: a) neglecting non-linear voltage drop from battery polarization leads to range errors exceeding 15% in constant-mass electric vehicles, and b) our method improves estimation accuracy by over 8.5% while bypassing the need for complex numerical simulations or discretization. This approach allows engineers to achieve high-fidelity predictions using only standard battery datasheets.

Perspectives

Years of navigating complex aircraft models inspired me to seek the elegance of a Breguet-like solution for electric flight. By distilling battery non-linearities into this plug-and-play equation, I bridged the gap between academic precision and engineering practicality. I hope this simple tool empowers the industry and promotes analytical clarity in our journey toward carbon-neutral aviation.

Mingkai Wang
Beihang University

Read the Original

This page is a summary of: Range Estimation of Electric Aircraft with Dynamically Dissipated Energy and Constant Power, Journal of Aircraft, March 2026, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/1.c038382.
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