What is it about?

High-altitude propellers operate in the lower parts of the stratosphere, in the altitude range between 16 km to 20 km. At this altitude range, the air density and temperature are quite low, creating a difficult environment for achieving high performances. The objective of this work is the development of an optimization framework tailored to the requirements of propellers operating in such conditions. In the end blade shapes with high efficiency are found.

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Why is it important?

High-altitude propellers are an integral component for the propulsion of High Altitude Pseudo Satellites (HAPS) which are developed as an alternative to classic satellites. HAPS can operate in the lowest parts of the stratosphere for prolonged periods of time and can provide satellite services over specific areas of interest. More efficient propellers are key components to enable the operation of HAPS for extended periods of time.

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This page is a summary of: Surrogate-Based Optimization of a High-Altitude Propeller, July 2021, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2021-2597.
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