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Endurance improvement by battery dumping strategy considering Peukert effect for electric-powered disposable UAVs

Part of: Smart Aircraft International Symposium on Smart Aircraft 2019 Collection

Published online by Cambridge University Press:  16 July 2020

X. Feng ,
Y. Sun ,
M. Chang Open the ORCID record for M. Chang [Opens in a new window]  and
J. Bai
X. Feng
Affiliation:
School of Aeronautics, Northwestern Polytechnical University, Xi’an, China
Y. Sun
Affiliation:
School of Aeronautics, Northwestern Polytechnical University, Xi’an, China
M. Chang*
Affiliation:
Unmanned System Research Institute, Northwestern Polytechnical University, Xi’an, China
J. Bai
Affiliation:
Unmanned System Research Institute, Northwestern Polytechnical University, Xi’an, China
*
[email protected]
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Abstract

Electric-powered disposable unmanned aerial vehicles (UAVs) have wide applications due to their advantages in terms of long time flight and load capacity. Thus, improving their endurance has become an important task to enhance the performance of these UAVs. To achieve this, we investigated a battery dumping strategy which splits the battery into several packs that are used and dumped in sequence to reduce the dead weight. The Peukert effect is also considered. In this paper, the sensitivity analysis method was employed to analyse the endurance benefits for different battery weight ratios, Peukert constants and capacities, quantitatively. The results show that the endurance benefits are significantly affected by all three parameters. For ideal batteries, the endurance can be improved by 20% and 28% respectively when employing a double-pack or triple-pack battery strategy (for a battery weight ratio of 0.4), but these benefits will fall rapidly if the Peukert constant exceeds 1.0 or the battery weight declines. Besides, the endurance will be 10% longer if the lift coefficient rather than the velocity remains constant after the battery packs are dumped at a Peukert constant of 1.2.

Keywords

Disposable UAVbattery dumping strategyPeukert effectendurance
Type
Research Article
Information
The Aeronautical Journal , Volume 125 , Issue 1283 , January 2021 , pp. 42 - 59
Copyright
© The Author(s), 2020. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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