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Full configuration drag estimation of short-to-medium range fixed-wing UAVs and its impact on initial sizing optimization

  • The paper presents the derivation of a new equivalent skin friction coefficient for estimating the parasitic drag of short-to-medium range fixed-wing unmanned aircraft. The new coefficient is derived from an aerodynamic analysis of ten different unmanned aircraft used for surveillance, reconnaissance, and search and rescue missions. The aircraft is simulated using a validated unsteady Reynolds-averaged Navier Stokes approach. The UAV’s parasitic drag is significantly influenced by the presence of miscellaneous components like fixed landing gears or electro-optical sensor turrets. These components are responsible for almost half of an unmanned aircraft’s total parasitic drag. The new equivalent skin friction coefficient accounts for these effects and is significantly higher compared to other aircraft categories. It is used to initially size an unmanned aircraft for a typical reconnaissance mission. The improved parasitic drag estimation yields a much heavier unmanned aircraft when compared to the sizing results using available drag data of manned aircraft.

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Metadaten
Author:Falk GöttenORCiD, Felix FingerORCiD, Marc Havermann, Carsten BraunORCiD, M. Marino, C. Bil
DOI:https://doi.org/10.1007/s13272-021-00522-w
ISSN:1869-5590 (Online)
ISSN:1869-5582 (Print)
Parent Title (English):CEAS Aeronautical Journal
Publisher:Springer
Place of publication:Berlin
Document Type:Article
Language:English
Year of Completion:2021
Date of the Publication (Server):2021/06/23
Tag:Aircraft sizing; CFD; Parasitic drag; UAV
Volume:12
First Page:589
Last Page:603
Note:
Corresponding author: Falk Götten
Link:https://doi.org/10.1007/s13272-021-00522-w
Zugriffsart:weltweit
Institutes:FH Aachen / Fachbereich Luft- und Raumfahrttechnik
FH Aachen / ECSM European Center for Sustainable Mobility
collections:Verlag / Springer
Open Access / Hybrid
Licence (German):License LogoCreative Commons - Namensnennung