Sunrise: Solar powered Thermal Airship

Saturday, February 25th, 2012

Designer Metin Kaplan presents his Sunrise solar-powered thermal airship as if it could really work:

Fresnel Lens, located inside the balloon, concentrates the sunlight into a focal point to produce hot air. A 2-axis sun tracking system allows for the lens to constantly face the sun. Motion is generated through the Stirling Engines, fueled by this hot air. Then the system mixes hot and colder air in the lower section of the balloon to create a homogeneous lifting gas. Beyond being a buoyant device, the well insulated balloon also acts as heat energy storage.This enables extra flight time for moments without sunlight. Any extra energy is then transformed into motion and stored in a flywheel as rotational motion.

(Hat tip to the Alternative History Weekly Update.)


  1. Mitro says:

    I am glad that I can help inspire some new posts.

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