NASA's Pathfinder/Helios series of unmanned solar-powered aircraft.
Semper is also supporting Solar Impulse, Bertrand Piccard's project for a round-the-world flight in a solar-powered aircraft.
Hoyt Clarke Hottel Award, American Solar Energy Society, April 24, 2001 ("lifetime achievement as an inventor, specifically for inventing the world's first two solar-powered aircraft")
In 2009 it became the first solar-powered aircraft to cross the Alps, 99 years after the first crossing of the Alps by an aircraft.
Electric motors, often linked to solar panels to create a solar-powered aircraft.
Another notable achievement came in 1972 as the test pilot of a solar-powered aircraft designed and built by Lockheed.
It was the third solar-powered aircraft to fly, after the unmanned AstroFlight Sunrise and the manned Mauro Solar Riser.
The solar-powered Solar Impulse aircraft lands in Morocco after a 19-hour flight from Spain, marking the first intercontinental flight of a purely solar-powered aircraft.
Solar Challenger was a solar-powered electric aircraft designed by Paul MacCready's AeroVironment.
A solar-powered aircraft using advanced batteries made in Tucson set the world record for the longest-duration unmanned flight, subject to pending confirmation.