PROPELLER FOR UNMANNED AERIAR VEHICLE FOR LONG-TERM FLIGHT AT HIGH ALTITUDES
Unmanned vehicle having propellant apparatus for aerial and underwater operation
device detecting rising wind and vortex ring state with differential pressure sensor
SOLAR PANEL DEVICE PROVIDED ON AIRCRAFT WING, AIRCRAFT WING HAVING SOLAR PANEL DEVICE, AND AIRCRAFT
SOLAR POWER PANNEL APPARATUS HAVING WING OF PLANE, WING OF PLANE AND PLANE