An Experimental Analysis on Propeller Performance in a Climate-controlled Facility
- 16 Downloads
Despite many commercial applications make extensive use of Unmanned Aircraft Systems (UAS), there is still lack of published data about their performance under unconventional weather conditions. In the last years, multirotors and fixed wing vehicles, commonly referred to as drones, have been studied in wind environments so that stability and controllability have been improved. However, other important weather variables have impact on UAS performance and they should be properly investigated for a deeper understanding of such vehicles. The primary objective of our study is the preliminary characterization of a propeller in a climate-controlled chamber. Mechanical and electrical data have been measured while testing the propeller at low pressure and cold temperatures. Test results point out that thrust and electric power are strongly affected by air density. A comparison between the experimental data and the results of the Blade Element Theory is carried out to assess the theory capability to estimate thrust in unconventional environments. The overlap between experimental data and theory computation is appropriate despite geometrical uncertainties and corroborate the need of a reliable aerodynamic database. Propeller performance data under unconventional atmospheres will be leveraged to improve UAS design, propulsion system modelling as well as provide guidelines to certify operations in extreme environments.
KeywordsPropeller performance Unmanned aircraft system test bench Harsh environmental coditions Blade element theory
Unable to display preview. Download preview PDF.
The research leading to these results has received funding from the European Regional Development Fund 2014-2020 of , under Grant Agreement 2223/2017/Project number FESR1048, Creazione di un servizio di sviluppo tecnico per droni testati per il funzionamento in condizioni ambientali estreme, DronEx.
- 1.Blade element theory for propeller. http://www.aerodynamics4students.com/propulsion/blade-element-propeller-theory.php. Accessed: 2019-07-12
- 2.Precisionhawk explores extreme-weather testing of drones with ace research centre. https://www.precisionhawk.com/blog/media/topic/precisionhawk-explores-extreme-weather-testing-of-drones-with-ace-research-centre. Accessed: 2019-07-26
- 3.Series 1520 thrust stand - rcbenchmark. https://www.rcbenchmark.com/pages/series-1520. Accessed: 2019-07-26
- 4.terraxcube. https://terraxcube.eurac.edu/. Accessed: 2019-07-26
- 5.U5 t-motor propulsion system specifications. http://store-en.tmotor.com/goods.php?id=318. Accessed: 2019-07-09
- 6.Brandt, J., Selig, M.: Propeller Performance Data at Low Reynolds Numbers. In: 49Th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, p. 1255 (2011)Google Scholar
- 7.FreeflySystem: Alta 8 Aircraft Fligth ManualGoogle Scholar
- 9.Houghton, E.L., Carpenter, P.W.: Aerodynamics for engineering students. Elsevier (2003)Google Scholar
- 14.Russell, C.R., Jung, J., Willink, G., Glasner, B.: Wind tunnel and hover performance test results for multicopter uas vehicles (2016)Google Scholar