A hybrid aerial vehicle is optimized, for example, and not by way of
limitation, to operate above 100,000 feet in altitude and provide
persistent and maneuverable flight while carrying a wide array of
communications and sensing payloads. The hybrid vehicle may use the high
altitude winds to gain altitude by pitching up with the center of gravity
(CG) control and using its propulsion drive to thrust into the wind to
create aerodynamic lift to rise above the neutral buoyancy altitude. The
hybrid vehicle will pitch down with the CG control so as to use gravity
and propulsion to accelerate. Yaw control directs the flight towards any
compass direction by rotating the gondola. This maneuvering capability
permits the vehicle to station operate persistently, even in high winds.
The lighter-than-air inflatable saucer shape is optimized for maintaining
an aerodynamic cross-section to the prevailing wind from any direction in
the vehicle horizontal plane. A gondola below the saucer contains a
motor, batteries, solar collector, sensors, and yaw and CG control
mechanisms.