PhD
Thesis
|
2020 |
Hann, R. (2020). Atmospheric Ice Accretions,
Aerodynamic Icing Penalties, and Ice Protection Systems on Unmanned Aerial
Vehicles. PhD Thesis NTNU2020:200, Norwegian University of Science and
Technology. |
Publications (Total: 92 /
Journal: 25 / Conference: 45 / Book chapters: 1 /
Other: 21)
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2027 |
Wallace, S., Harcourt, W., Hann, R., Durrant, A., Somayajulu,
S., Leontidis, G. (2027). CrevasseSeg: A Label-Efficient UAV Crevasse Segmentation
Framework Proceedings of the 10th Northern Lights Deep Learning
Conference (NLDL). |
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2026 |
Hann, R., Bärfuß, K., Betlem,
P., Ewertowski, M., Günzel, L., Jonassen, M., Lampert, A., Laska, M.,
Storvold, R., Sobota, I. (2026). Third Update to Scientific
Applications of Uncrewed Vehicles in Svalbard. SESS Report 2025,
Svalbard Integrated Arctic Earth Observing System. doi.org/10.5281/zenodo.17832158 |
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Benmeddour, A., Kim, K.-H., Blanchard, G., Agüero Bruna, A., Deiler,
C., Frövel, M., Gagnon, R., García-Gallego, P., Håkonsen, V., Hawkins, C. J.,
Martin, B., Mingione, G., Mora-Nogués, J., Niemenmaa, R., Kreeger, E. R., Raimondo,
M., Saracoglu, B., Uihlein, T., Van Beeck, J., Veronesi, F., Hann, R. et al. (2026). Assessment
of Anti-Icing and De-Icing Technologies for Air and Sea Vehicles. STO
Technical Report TR-AVT-299, NATO Science and Technology Organization. doi.org/10.14339/STO-TR-AVT-299 |
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Benmeddour, A., Kim, K.-H., Blanchard, G., Agüero Bruna, A., Deiler, C.,
Frövel, M., Gagnon, R., García-Gallego, P., Håkonsen, V., Hawkins, C. J.,
Martin, B., Mingione, G., Mora-Nogués, J., Niemenmaa, R., Kreeger, E. R.,
Raimondo, M., Saracoglu, B., Uihlein, T., Van Beeck, J., Veronesi, F., Hann, R. et al. (2026). Assessment
of Anti-Icing and De-Icing Technologies for Air and Sea Vehicles. STO
Technical Report TR-AVT-299 – Executive Summary, NATO Science and
Technology Organization. doi.org/10.14339/STO-TR-AVT-299-ES-PDF |
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Harcourt, W. D., Pearce, D. M., Gajek, W., Lovell, H., Mannerfelt, E.
S., Kääb, A., Benn, D. I., Luckman, A., Hann, R., Kohler, J., Strozzi, T., McCerery, R.,
Davies, B. J. (2026). Surging glaciers in
Svalbard: Observing their distribution, characteristics and evolution. Earth-Science
Reviews, 275, 105410. doi.org/10.1016/j.earscirev.2026.105410 |
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Müller, N.C., Villeneuve, E., Hann, R. (2026). UAV Icing:
Experimental Characterization of the Performance Impact of Ice Accretion on a
Propeller. Drones, 10(3), 166. doi.org/10.3390/drones10030166 |
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Hann, R. (2026). UAV Icing: Operational
Risk Management of Icing Conditions for Beyond Visual Line of Sight (BVLOS)
Missions. AIAA 2026-4281. AIAA AVIATION 2026 Forum. doi.org/10.2514/6.2026-4281 |
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Müller, N.C., Villeneuve, E., Hann, R. (2026). UAV
Icing: Comparison of 2D and 3D Numerical Tools for the Predictions of the Ice
Accretion on UAV Propellers. AIAA 2026-4284. AIAA AVIATION 2026 Forum. doi.org/10.2514/6.2026-4284 |
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Röß, J., Deck, U., Hann, R. (2026). UAV
Icing: Experimental and Numerical Investigation of Aerodynamic Performance
Degradation of the RG-15 Airfoil at Low Reynolds Numbers. AIAA 2026-4285.
AIAA AVIATION 2026 Forum. doi.org/10.2514/6.2026-4285 |
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Wallisch, J., Lindner, M., Borup, K.T., Hann, R. (2026). UAV
Icing at Low Reynolds Numbers: RG-15 Airfoil Drag Increase Prediction Based
on Batch-Automated CFD Simulations. Journal of Aerospace Engineering, Volume
39, Issue 5. doi.org/10.1061/JAEEEZ.ASENG-6806 |
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Hann, R. (2026). Ice
Patterns: Algorithmic Glaciers. Artistic result. Polarlit, Volume
3, ISSN: 2704-2103 |
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Lindner, M., Hann, R. (2026). Low-Reynolds-number
ice-shape validation data for icing-CFD codes, with application to FENSAP-ICE.
Cold Regions Science and Technology, 253, 105119. doi.org/10.1016/j.coldregions.2026.105119 |
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2025 |
Lockhart, K., Sandino, J., Amarasingam, N., Hann,
R., Bollard, B., Gonzalez, F. (2025). Unmanned Aerial Vehicles for
Real-Time Vegetation Monitoring in Antarctica: A Review. Remote
Sensing. 17(2), 304. doi.org/10.3390/rs17020304 |
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Harcourt, W.D., Pearce, D.M., Gajek, W.,
Lovell, H., Luckman, A., Benn, D., Kohler, J., Kääb, A., Hann, R.
(2025). Surging glaciers in
Svalbard: Current knowledge and perspectives for monitoring. SESS
Report 2024, Svalbard Integrated Arctic Earth Observing System. doi.org/10.5281/zenodo.14425522 |
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Lindner, M., Hann, R. (2025). UAV
Icing: Icing Effects on Control Surfaces. AIAA Aviation Forum. AIAA
2025-3388. doi.org/10.2514/6.2025-3388 |
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Løw-Hansen, B., Hann, R., Gryte, K.,
Johansen, T.A., Deiler, C. (2025). Modeling and identification of a
small fixed-wing UAV using estimated aerodynamic angles. CEAS
Aeronautical Journal, Volume 16, pages 501–523. doi.org/10.1007/s13272-025-00816-3 |
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Gajek, W., Luckman, A., Harcourt, W., Pearce, D., Hann, R.
(2025). Utilizing Seismic
Station Internal GPS for Tracking Surging Glacier Sliding Velocity. Journal
of Glaciology, Volume 71. doi.org/10.1017/jog.2025.30 |
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2024 |
Frey, M., Müller,
N.C., Wallisch, J., Hann, R. (2024). UAV
Icing: Experimental Investigation and Numerical CHT Simulations of a
Propeller Ice Protection System. AIAA SciTech Forum, AIAA 2024-0871. doi.org/10.2514/6.2024-0871 |
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Hann, R., Borup, K.T. (2024). Requirements for UAV
Operations in Cold Climates and Icing Conditions. Report. UBIQ Aerospace. |
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Deiler, C., Veronesi,
F., Raimondo, M., Mora, J., García, P., Frovel, M.,
Gagnon, B., Browne, T., Hann, R. (2024). Ice
Detection Technologies. STO Technical Report, AVT-299 Assessment of Anti-Icing
and De-Icing Technologies for Air and Sea Vehicles. |
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Veronesi, F., Raimondo, M., Mingione, G.,
Martin, B., Hann, R., Håkonsen, V., Ki-Han, K., Nogues, J.M., Gagnon,
B. (2024). Ice
Protection Systems. STO Technical Report, AVT-299 Assessment of
Anti-Icing and De-Icing Technologies for Air and Sea Vehicles. |
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Blanchard, G., Hann, R., Håkonsen, V., Benmeddour, A., Bennani,
L., Rouzaud, O. (2024). Computational
Modelling and Simulation Methods. STO Technical Report, AVT-299
Assessment of Anti-Icing and De-Icing Technologies for Air and Sea Vehicles. |
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Müller, N.C., Hann,
R. (2024). UAV
Icing: Comparison of the Influence of Icing on a Rotor in Vertical and
Horizontal Flight. 20th International Workshop on Atmospheric Icing of
Structures (IWAIS). |
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Hann, R., Borup, K.T. (2024). Technical
requirements for RPAS operations in cold climates. 20th International
Workshop on Atmospheric Icing of Structures (IWAIS). |
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Hann, R., Müller, N.C.,
Wallisch, J. (2024). UAV
Icing: Impact Testing of Ice Fragments on a Propeller. AIAA 2024-4352. AIAA Aviation Forum and Ascend. doi.org/10.2514/6.2024-4352 |
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Müller, N.C., Hann,
R. (2024). UAV
Icing: Validation of an Ice Protection System Design for a Propeller. AIAA 2024-3568. AIAA Aviation Forum and Ascend. doi.org/10.2514/6.2024-3568 |
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Løw-Hansen, B., Hann, R., Johansen,
T.A, Deiler C. (2024). Time-Domain
System Identification and Validation of Small Fixed-Wing UAV Dynamics. AIAA 2024-4653. AIAA Aviation Forum and Ascend. doi.org/10.2514/6.2024-4653 |
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Lindner, M., Hann, R. (2024). UAV
Icing: Comparison of Simulated 3D and 2D Ice Accretion on Wings. AIAA 2024-4451. AIAA Aviation Forum and Ascend. doi.org/10.2514/6.2024-4451 |
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Laurendeau, E.,
Blanchet, M., Zayni, M.K., Hann, R.,
Radenac, E., Mussa I, Pueyo A. (2024). Summary From the 2nd AIAA Ice
Prediction Workshop. AIAA 2024-3604. AIAA Aviation Forum and
Ascend. doi.org/10.2514/6.2024-3604 |
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Walthall, R., David, A., Farell, J., Hann,
R., Johansen, T.A. (2024). Aerospace
Developments: Vol. 2. SAE Technical Paper EPRCOMPV302023. |
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Wallace, S., Durrant, A., Harcourt, W., Hann, R., Leontidis, G.
(2024). Exploring
Segment Anything Foundation Models for Out of Domain Crevasse Drone Image
Segmentation. Proceedings of the 6th Northern Lights
Deep Learning Conference (NLDL). |
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Hann, R. (Ed.) (2024). 2nd International UAV Icing
Workshop: Book of Abstracts. UAV Icing Workshop, Trondheim, Norway. doi.org/10.5281/zenodo.14274740 |
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Wallisch, J., Lindner,
M., Petersen, Ø.W., Neunaber, I., Bracchi, T., Hearst, R.J., Hann, R.
(2024). UAV Icing: Aerodynamic
Degradation Caused by Intercycle and Runback Ice
Shapes on an RG-15 Airfoil. Drones, 8(12),
775. doi.org/10.3390/drones8120775 |
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Borup, K.T., Hann, R., Sørensen,
K.L., Bernstein, B., Pellicano, P. (2024). Icing
Impact on UAS and AAM Operations in Selected US Metropolitan Areas. Report. UBIQ Aerospace. |
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2023 |
Paulsen, I.M.G., Pedersen, Å.Ø., Hann,
R., Blanchet, M.-A., Eischeid, I., Van Hazendonk, C., Ravolainen, V.T.,
Stien, A., Le Moullec, M. (2023). How Many Reindeer? UAV
Surveys as an Alternative to Helicopter or Ground Surveys for Estimating
Population Abundance in Open Landscapes. Remote Sensing, 15(1),
9. doi.org/10.3390/rs15010009 |
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Högnadottir, S., Gryte, G., Hann, R.,
Johansen, T.A. (2023). Inner-Loop
Control of Fixed-Wing Unmanned Aerial Vehicles in Icing Conditions. AIAA SCITECH
Forum. AIAA 2023-1049 doi.org/10.2514/6.2023-1049 |
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Hann, R., Betlem, P., Deja, K., Ewertowski, M., Harm-Altstädter, B., Jonassen,
M., Lampert, A., Laska, M., Sobota, I., Storvold, R., Tomczyk, A., Zagórski,
P. (2023). Practical Guidelines
for Scientific Application of Uncrewed Aerial Vehicles in Svalbard. SESS Report 2022, Svalbard Integrated Arctic Earth Observing System.
doi.org/10.5281/zenodo.7371141 |
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Hann, R., Müller, N.C.,
Lindner, M., Wallisch, J. (2023). UAV
Icing: Experimental validation data for predicting ice shapes at low Reynolds
numbers. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1372 |
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Wallisch, J., Hann, R. (2023). UAV
Icing: Intercycle Ice Effects on Aerodynamic
Performance. SAE International Conference on Icing of
Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1400 |
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Müller, N.C., Hann,
R. (2023). UAV
Icing: 3D simulations of propeller icing effects and anti-icing heat loads. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1383 |
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Løw-Hansen, B., Müller, N.C., Coates, E.,
Johansen, T.A., Hann, R. (2023). Identification
of an Electric UAV Propulsion System in Icing Conditions. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1378 |
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Cheung, M., Johansen, T.A., Hann,
R. (2023). UAV
Icing: Icing Cases
for Validation of Path Planning Method. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1379 |
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Lindner, M., Wallisch,
J., Hann, R. (2023). UAV
Icing: Numerical Simulation of Icing Effects on Wing and Empennage. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1384 |
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Heramarwan, H.,
Müller, N., Lutz, T., Hann, R. (2023). UAM
Icing: Ice Accretion Simulations and Experiments of an eVTOL Rotor. SAE
International Conference on Icing of Aircraft, Engines, and Structures. doi.org/10.4271/2023-01-1391 |
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Enache, A., Wallisch,
J., van Beeck, J., Hendrick, P., Hann, R. (2023). Ice Accretion:
Image Post-Processing Measurement Techniques for 2D Ice Shapes. Aerospace, 10(5), 451. doi.org/10.3390/aerospace10050451 |
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Hann, R. (2023). Numerical Simulation of
In-Flight Icing of Unmanned Aerial Vehicles. In: Habashi, W.G. (eds)
Handbook of Numerical Simulation of In-Flight Icing. Springer. doi.org/10.1007/978-3-030-64725-4_12-1 |
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Müller, N.C., Løw-Hansen, B., Borup, K.T., Hann,
R. (2023). UAV icing:
Development of an ice protection system for the propeller of a small UAV. Cold Regions Science and Technology, 213, 103938. doi.org/10.1016/j.coldregions.2023.103938 |
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Ghirardelli, M., Kral, S.T., Müller, N.C., Hann,
R., Cheynet, E., Reuder, J. (2023). Flow Structure around a Multicopter Drone: A Computational Fluid Dynamics
Analysis for Sensor Placement Considerations. Drones,
7(7), 467. doi.org/10.3390/drones7070467 |
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Løw-Hansen, B., Hann, R., Stovner,
B.N., Johansen, T.A. (2023). UAV
Icing: A survey of recent developments in ice detection methods. 22nd IFAC World Congress, Yokohama. |
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Wurst, L., Wallisch,
J., Hann, R. (2023). CFD
icing simulations on a fixed-wing UAV engine inlet. Deutscher Luft- und Raumfahrtkongress
(DLRK). doi.org/10.25967/610455 |
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2022 |
Oswald, J.W., Enache,
A., Hann, R., Glabeke, G., Lutz, T. (2022). UAV
Icing: Experimental and Numerical Study of Glaze Ice. AIAA 2022-1976.
AIAA SciTech Forum. doi.org/10.2514/6.2022-1976 |
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Hann, R., Betlem, P., Deja, K., Hartvich, F., Jonassen, M., Lampert,
A., Laska, M., Sobota, I., Storvold, R., Zagórski P. (2022). Update to Scientific Applications of Unmanned Vehicles
in Svalbard. SESS Report 2021, Svalbard Integrated
Arctic Earth Observing System. doi.org/10.5281/zenodo.5751959 |
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Meier, K., Hann, R., Skaloud, J.,
Garreau, A. (2022). Wind Estimation with
Multirotor UAVs. Atmosphere, 13, 551. doi.org/10.3390/atmos13040551 |
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Hann, R. (2022). Hazards
of In-flight Icing on Unmanned Aircraft. Conference paper. SCI-328
Symposium on ‘Flight Testing of Unmanned Aerial Systems (UAS). |
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Cheung, M., Hann, R., Johansen, T.A.
(2022). UAV
Icing: A Unified Icing Severity Index Derived from Performance Degradation. AIAA Atmospheric and Space Environments Conference. doi.org/10.2514/6.2022-3906 |
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Wallisch, J., Hann, R. (2022). UAV
Icing: Experimental Investigation of Ice Shedding Times with an
Electrothermal De-Icing System. AIAA Atmospheric and Space Environments
Conference. doi.org/10.2514/6.2022-3905 |
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Müller, N., Hann, R. (2022). UAV
Icing: A Performance Model for a UAV Propeller in Icing Conditions. AIAA
Atmospheric and Space Environments Conference. doi.org/10.2514/6.2022-3903 |
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Løw-Hansen, B., Hann, R., Johansen,
T.A. (2022). UAV
Icing: Ice Shedding Detection Method for an Electrothermal De-Icing System. AIAA
Atmospheric and Space Environments Conference. doi.org/10.2514/6.2022-3904 |
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Laurendeau, É.,
Bourgault-Côté, S., Ozcer, I., Hann, R., Radenac, E., Pueyo, A.
(2022). Summary
from the 1st AIAA Ice Prediction Workshop. AIAA
Atmospheric and Space Environments Conference. doi.org/10.2514/6.2022-3398 |
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Hann, R. (2022). UAV
Icing: Challenges for computational fluid dynamic (CFD) tools. International
Conference on Computational Fluid Dynamics, ICCFD11. |
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2021 |
Hann, R., Enache, A., Nielsen, M.C., Stovner, B.N.,
van Beeck, J., Johansen, T.A., Borup, K.T. (2021). Experimental Heat Loads for Electrothermal
Anti-Icing and De-Icing on UAVs. Aerospace,
8(3), 83. doi.org/10.3390/aerospace8030083 |
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Hann, R., Altstädter, B., Betlem, P., Deja, K., Dragańska-Deja K.,
Ewertowski, M., Hartvich, F., Jonassen, M., Lampert, A., Laska, M., Sobota,
I., Storvold, R., Tomczyk, A., Wojtysiak, K., Zagórski P. (2021). Scientific Applications of
Unmanned Vehicles in Svalbard. SESS Report 2020,
Svalbard Integrated Arctic Earth Observing System. doi.org/10.5281/zenodo.4293283 |
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Jawak, S.D., Andersen, B.N., Pohjola, V., Godøy,
Ø., Hübner, C., Jennings, I., Ignatiuk, D., Holmen,
K., Sivertsen, A., Hann, R., Tømmervik, H., Kääb,
A., Błaszczyk, M., Salzano, R., Luks, B.,
Høgda, K., Storvold, R., Nilsen, L., Salvatori, R., Krishnan, K.P.,
Chatterjee, S., Lorentzen, D.A., Erlandsson, R., Lauknes,
T.R., Malnes, E., Karlsen, S.R., Enomoto, H., Fjæraa,
A.M., Zhang, J., Marty, S., Nygård, K.O., Lihavainen, H. (2021). SIOS’s Earth Observation (EO), Remote Sensing
(RS), and Operational Activities in Response to COVID-19. Remote Sensing, 13(4), 712. doi.org/10.3390/rs13040712 |
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Sørensen, K.L., Borup, K.T., Hann, R.,
Bernstein, B., Hansbø, M. (2021). UAV Atmospheric Icing Limitations: Climate
Report for Norway and Surrounding Regions. Report. UBIQ Aerospace. |
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Hann, R., Johansen, T.A. (2021). UAV icing: the influence of
airspeed and chord length on performance degradation. Aircraft Engineering and Aerospace Technology, Vol. 93, No. 5. doi.org/10.1108/AEAT-06-2020-0127 |
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Müller, N., Hann,
R., Lutz, T. (2021). UAV Icing: Numerical Simulation of
Propeller Ice Accretion. AIAA 2021-2673. AIAA Aviation 2021 Forum. doi.org/10.2514/6.2021-2673 |
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Nicu, I.C.,
Rubensdotter, L., Stalsberg, K., Nau, E. (2021). Coastal Erosion of Arctic Cultural Heritage
in Danger: A Case Study from Svalbard, Norway. Water, 13(6), 784. doi.org/10.3390/w13060784 (Hann, R. contribution: drone mapping). |
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Haaland, O.M., Wenz, A.W., Gryte, K., Hann,
R., Johansen, T.A. (2021). Detection and Isolation of
Propeller Icing and Electric Propulsion System Faults in Fixed-Wing UAVs. In 2021 International Conference on Unmanned Aircraft Systems (ICUAS),
pp. 377-386, IEEE. doi.org/10.1109/ICUAS51884.2021.9476695 |
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Hermanson, M.H., Isaksson, E., Hann, R., Ruggirello, R.M.,
Teixeira, C., Muir, D.C.G. (2021). Historic
Atmospheric Organochlorine Pesticide and Halogenated Industrial Compound
Inputs to Glacier Ice Cores in Antarctica and the Arctic. ACS Earth
Space Chem, 5, 9, 2534–2543. doi.org/10.1021/acsearthspacechem.1c00211 |
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Dachauer, A., Hann, R., Hodson, A.J.: Aerodynamic roughness
length of crevassed tidewater glaciers from UAV mapping, The
Cryosphere, 15, 5513–5528, 2021. doi.org/10.5194/tc-15-5513-2021 |
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2020 |
Hann, R., Johansen, T.A. (2020). Unsettled
Topics in Unmanned Aerial Vehicle Icing. SAE International,
SAE EDGE Research Report EPR2020008. doi.org/10.4271/EPR2020008 |
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Hermanson, M.H., Isaksson E., Hann R., Teixeira C.F., Muir
D.C.G. (2020). Deposition of Polychlorinated
Biphenyls to Firn and Ice Cores at Opposite Polar
Sites: Site M, Dronning Maud Land, Antarctica, and Holtedahlfonna,
Svalbard. ACS Earth and Space
Chemistry 4 (11), pp. 2096-2104. doi.org/10.1021/acsearthspacechem.0c00227 |
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Wallisch, J., Hann, R. (2020). Design of a Low-Speed Icing Wind
Tunnel for UAVs. Deutsche Gesellschaft für Luft- und Raumfahrt. doi.org/10.25967/530188 |
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Hermanson, M.H., Isaksson E., Hann R., Teixeira C.F., Muir
D.C.G. (2020). Atmospheric Deposition of Organochlorine
Pesticides and Industrial Compounds to Seasonal Surface Snow at Four Glacier
Sites on Svalbard, 2013-2014. Environmental
Science & Technology, vol. 54, issue 15, pp. 9265–9273. doi.org/10.1021/acs.est.0c01537 |
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Hovenburg, A.R.,
Andrade, F.A.A., Hann, R., Rodin, C.D., Johansen, T.A., Storvold, R.
(2020). Long Range Path Planning Using an Aircraft
Performance Model for Battery Powered sUAS Equipped with Icing Protection
System. IEEE Journal on Miniaturization for
Air and Space Systems. doi.org/10.1109/JMASS.2020.3003833 |
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Hann, R., Hearst, R.J., Sætran, L.R., Bracchi, T.
(2020). Experimental and Numerical Icing Penalties of
an S826 Airfoil at Low Reynolds Numbers. Aerospace, 7(4), 46. [Data] doi.org/10.3390/aerospace7040046 |
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Narum, E.F.L., Hann, R., Johansen,
T.A. (2020). Optimal Mission Planning for Fixed-Wing
UAVs with Electro-Thermal Icing Protection and Hybrid-Electric Power Systems. In 2020 International Conference on Unmanned Aircraft Systems (ICUAS), pp.
651-660, IEEE. doi.org/10.1109/ICUAS48674.2020.9214054 |
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2019 |
Hann, R., Hermanson, M. (2019). Derivation of Flow Rate and Calibration
Method for High-Volume Air Samplers. Atmospheric Measurement Techniques, 12(9), 4725-4731. doi.org/10.5194/amt-12-4725-2019 |
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Hann, R. (2019). UAV Icing: Ice Accretion
Experiments and Validation. SAE Technical Paper. No. 2019-01-2037. doi.org/10.4271/2019-01-2037 |
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Hann, R., Borup, K., Zolich, A., Sorensen, K.,
Vestad, H., Steinert, M., Johansen, T.A. (2019). Experimental Investigations of an
Icing Protection System for UAVs. SAE Technical Paper. No. 2019-01-2038. doi.org/10.4271/2019-01-2038 |
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Fajt, N., Hann, R., Lutz, T. (2019). The Influence of Meteorological
Conditions on the Icing Performance Penalties on a UAV Airfoil. 8th European Conference for Aeronautics and Aerospace
Sciences (EUCASS). doi.org/10.13009/EUCASS2019-240 |
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Winter, A., Hann, R., Wenz, A., Gryte, K., Johansen, T.A. (2019). Stability of a Flying Wing UAV in Icing
Conditions. 8th European Conference for
Aeronautics and Aerospace Sciences (EUCASS). doi.org/10.13009/EUCASS2019-906 |
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Hann, R. (2019). UAV Icing: Comparison of LEWICE
and FENSAP-ICE for Anti-Icing Loads. AIAA 2019-1286. AIAA Scitech Forum. doi.org/10.2514/6.2019-1286 |
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2018 |
Gryte, K., Hann, R., Alam,
M., Roháč, J., Johansen, T.A., Fossen, T. I. (2018). Aerodynamic
modeling of the skywalker x8 fixed-wing unmanned
aerial vehicle. In 2018 International Conference on Unmanned
Aircraft Systems (ICUAS), pp. 826-835. IEEE. doi.org/10.1109/ICUAS.2018.8453370 |
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Hann, R. (2018). UAV
Icing: Comparison of LEWICE and FENSAP-ICE for Ice Accretion and Performance
Degradation. AIAA 2018-2861. AIAA Atmospheric and Space Environments
Conference. doi.org/10.2514/6.2018-2861 |
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2017 |
Hermanson, M.H., Hann, R., Johnson, G.W. (2017). Response to
Comment on “Polychlorinated Biphenyls in Tree Bark near Former Manufacturing
and Incinerator Facilities in Sauget, Illinois, United States”. Environmental
Science & Technology. 2017, 51, 8206−8207. doi.org/10.1021/acs.est.7b01688 |
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Krøgenes, J., Brandrud, L., Hann,
R., Bartl, J., Bracchi, T., & Sætran, L. (2017). Aerodynamic
performance of the NREL S826 airfoil in icing conditions. Wind
Energy Science Discussions, 1-17. |
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Hann, R., Wenz, A., Gryte, K., & Johansen, T.A. (2017). Impact
of atmospheric icing on UAV aerodynamic performance. In 2017 Workshop on
Research, Education and Development of Unmanned Aerial Systems (RED-UAS), pp.
66-71. IEEE. doi.org/10.1109/RED-UAS.2017.8101645 |
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2016 |
Hermanson, M.
H., Hann, R., Johnson, G. W.
(2016). Polychlorinated
biphenyls in tree bark near former manufacturing and incineration facilities
in Sauget, Illinois, United States. Environmental Science &
Technology, 50(12), 6207-6215. doi.org/10.1021/acs.est.6b01053 |
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2015 |
Lutz, T., Arnold, B., Bekiropoulos, D., Illg, J., Krämer, E., Wolf,
A., Hann, R., Kamruzzaman, M. (2015). Prediction
of flow-induced noise sources of wind turbines and application examples. International
Journal of Aeroacoustics, 14(5-6), 675-714. doi.org/10.1260/1475-472X.14.5-6.675 |
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2013 |
Hann, R., Wolf, A.,
Bekiropoulos, D., Lutz, T., Krämer, E. (2013). Numerical
investigation on the noise generation of iced wind turbine airfoils. Winterwind Conference. |
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Hann, R., (2013). Aeroakustische Analyse Vereister Profile
einer Windenergieanlage. Diplomarbeit/ Final-year thesis. University of Stuttgart. |
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2012 |
Hann, R., (2012). Thermische Untersuchung der Eisbildung
und des Anti-Icings an einem Rotorblatt für Windenergieanlagen. Studienarbeit/study thesis. University of
Stuttgart. |