High-place observation device including an extendable rod-shaped body and a detachable rotorcraft

A FLOATING PLATFORM FOR LAUNCHING A SPACE ROCKET FROM A HEIGHT AND METHOD FOR LAUNCHING A RIGID -WALLED BALLOON INTO THE SPACE

High-place observation device including a gas balloon and a detachable rotorcraft

Holding pattern determination

Flight vehicle with drone and lift-producing protrusion

Systems and methods for long endurance airship operations

Systems and methods for long endurance stratospheric operations