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Blade Air Mobility, Inc. (stylized as BLADE) is an aviation company headquartered in New York City and incorporated in Delaware. Blade's urban air mobility platform provides air transportation for passengers and last-mile critical cargo, [2] [3] primarily using helicopters and amphibious aircraft for passenger routes in the United States, Canada, Southern Europe, and India, in addition to ...
A rotor blade produces more lift in the advancing half. As a blade moves toward the direction of flight, the forward motion of the aircraft increases the speed of the air flowing around the blade until it reaches a maximum when the blade is perpendicular to the relative wind. At the same time, a rotor blade in the retreating half produces less ...
The Sikorsky S-69 (military designation XH-59) is an American experimental compound helicopter developed by Sikorsky Aircraft as the demonstrator of the co-axial Advancing Blade Concept (ABC) with United States Army and NASA funding.
A Black Hornet Nano helicopter unmanned aerial vehicle (UAV) (2013) The Black Hornet Nano is a military micro unmanned aerial vehicle (UAV) developed by Prox Dynamics AS of Norway, and in use by the armed forces of Norway, the United States, France, the United Kingdom, Germany, Denmark, Algeria, Ireland, Australia, the Netherlands, Poland, New Zealand, India, Turkey, South Africa, Ukraine and ...
Unlike single- and double-rotor helicopters which use complex variable pitch rotors whose pitch varies as the blade rotates for flight stability and control, multirotors often use fixed-pitch blades; control of vehicle motion is achieved by varying the relative speed of each rotor to change the thrust and torque produced by each.
The first aerobatic manned drone, as this type of electrically powered multi-rotor helicopter is known, had 12 rotors and could carry 1-2 people. [ 37 ] Manned drones or eVTOL as they are called typically multirotor designs powered by batteries gained increasing popularity and designs in the 2020s.