The Helios Prototype solar-electric flying wing was one of several remotely piloted aircraft, also known as uninhabited aerial vehicles or UAVs, that were developed as technology demonstrators under the now-concluded Environmental Research Aircraft and Sensor Technology (ERAST) project. Prior to its loss in an in-flight mishap in June 2003, the Helios Prototype set a world altitude record for propeller-driven aircraft of almost 97,000 feet.
Pathfinder was first developed for a now-cancelled classified government program in the early 1980’s to develop a high-altitude, long-endurance aircraft for surveillance purposes. Known as the HALSOL (for High-Altitude SOLar) aircraft, its eight electric motors — later reduced to six — were first powered by batteries. 
The Centurion is a lightweight, solar-powered, remotely piloted flying wing aircraft that is demonstrating the technology of applying solar power for long-duration, high-altitude flight. It is considered to be a prototype technology demonstrator for a future fleet of solar-powered aircraft that could stay airborne for weeks or months on scientific sampling and imaging missions or while serving as telecommunications relay platforms. It also has a wingspan of 206 feet.
The “Hy-Bird” project plans to fly around the world with a 100% clean electric airplane powered only by renewable energies: solar energy and hydrogen. The goal is to design an airplane, which will use only renewable energies with no greenhouse gas emission.Here is a link to see more of the solar airplane ideas and also videos of each:
1 comment:
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