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Stirling Motor for Flying?

Robert McConaghy created the first flying stirling engine powered aircraft in August 1986. The Beta type engine weighed 360 grams, and produced only 20 Watts of power. The engine was attached to the front of a modified Super Malibu radio control glider with a gross takeoff weight of 1 kg. The best published test flight lasted 6 minutes and exhibited “barely enough power to make the occasional gentle turn and maintain altitude”

The main argument against using a Stirling engine in an aircraft was its weight. But with the rise of new strong and lightweight materials, conditions could change.

[wikipedia.org] – Airbus (formerly EADS)
[wikipedia.org] – Stirling Engine
[freepatentsonline.com] – Stirling Engine for an Emission-free Aircraft (EADS, 2016)
[patents.google.com] – Stirling engine with flapping wing for an emission-free aircraft (EADS, 2011)
[uspto.gov] – Solar thermal aircraft (2004, Lawrence Livermore)
[banggood.com] – Aircraft Hot Air Power Generator Innovative Stirling Engine

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