Australian aircraft builder AMSL Aero has cut the tether on its Vertiia eVTOL ... The propellers are powered by a hydrogen fuel cell, which produces only electricity, water vapor, and heat.

The technology of the bicycle, with its relatively low-loss chain and gear drive and rigid triangulated frame, has been applied to all successful human-powered aircraft. The aircraft shown in the ...

The technology of the bicycle, with its relatively low-loss chain and gear drive and rigid triangulated frame, has been applied to all successfull human-powered aircraft. The diagram shows the pilot's ...

Windlift's tethered drones generate power by harnessing wind energy, with support from a $30M DoD contract for testing and commercialization.

Abstract: S.P.I.D.R.E. is a very adaptable and dependable team testing the feasibility of a portable tethered aircraft wind energy generation device. We pride ourselves on our ability to work in ...