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Experimental Investigations of an Icing Protection System for UAVs
Technical Paper
2019-01-2038
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
UAV icing is a severe challenge that has only recently shifted into the focus of research. Today, there are no mature icing mitigation technologies for UAVs, except for the largest fixed-wing drones. We are working on the development of an electro-thermal icing protection technology called D•ICE for medium-sized fixed-wing UAVs. As part of the design process, an experimental test campaign at the Cranfield icing wind tunnel has been conducted. This paper describes the icing protection system and shares experimental results on its capability for icing detection and anti-icing. Icing detection is based on an algorithm evaluating temperature signals that are induced on the leading-edge of the wing. A baseline signal is generated during dry (icing cloud off) conditions and compared to a signal during wet (icing cloud on) conditions. Due to significant differences in the heat transfer regime, the system can differentiate between these two states. The experiments show that our system can reliably detect icing conditions based on this principle. Furthermore, the anti-icing capability of the system is proven for two icing cases. The minimal required heat flux to keep the surface ice-free was obtained by gradually reducing power supply to the heating zones until icing could be detected. These experimental results were compared to FENSAP-ICE simulations. The test campaign includes a successful fully-autonomous run, where the system automatically detected icing and initiated suitable anti-icing measures.
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Authors
- Richard Hann - Norwegian University of Science and Technology (NTNU)
- Kasper Borup - Norwegian University of Science and Technology (NTNU)
- Artur Zolich - Norwegian University of Science and Technology (NTNU)
- Kim Sorensen - UBIQ Aerospace
- Håvard Vestad - Norwegian University of Science and Technology (NTNU)
- Martin Steinert - Norwegian University of Science and Technology (NTNU)
- Tor Johansen - Norwegian University of Science and Technology (NTNU)
Citation
Hann, R., Borup, K., Zolich, A., Sorensen, K. et al., "Experimental Investigations of an Icing Protection System for UAVs," SAE Technical Paper 2019-01-2038, 2019, https://doi.org/10.4271/2019-01-2038.Data Sets - Support Documents
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