{"id":210,"date":"2017-06-26T20:26:09","date_gmt":"2017-06-26T20:26:09","guid":{"rendered":"https:\/\/uavrt.nau.edu\/?page_id=210"},"modified":"2019-06-27T15:27:35","modified_gmt":"2019-06-27T22:27:35","slug":"genback","status":"publish","type":"page","link":"https:\/\/uavrt.nau.edu\/index.php\/docs\/vehicle\/genback\/","title":{"rendered":"General Background"},"content":{"rendered":"

Control Surfaces<\/h3>

A multirotor or multicopter is controlled through the use of two or more rotors. By utilizing differential thrust management and independent speed control\u00a0for each motor, the copter is able to provide lift and directional control. The added benefit of a multirotor design is encompassed in its\u00a0ability to easily hold position and\u00a0perform various flight maneuvers while supporting payload. Due to the innate unstable state\u00a0of a multirotor, the use of on on-board computer is required to relay pilot inputs and maintain a stable flight. A multirotor, like a plane, has three degrees of rotation and hence three degrees of flight control.<\/p>\n

Both pitch and roll are controlled through speeding up all\u00a0motors on one side of the copter and slowing down the opposing motors.\u00a0Hence, horizontal travel is controlled by temporarily speeding up or slowing individual motors and creating a lean in the desired direction of travel. Control in the yaw axis is controlled by speeding up motors that are directly diagonal to each other and slowing down the other set of motors. Through this motor control the copter is capable of performing a 360 degree turn while loitering at the same altitude. Finally, thrust control and changes in altitude is\u00a0generated through the increase or decrease in speed of all motors simultaneously.<\/p>\n<\/div><\/div><\/div>

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Frame Types<\/h3>

A multirotor is defined as any copter with two of more motors allowing\u00a0for a multitude of frame configurations. Each frame configuration has inherent advantages and disadvantages, and this section will seek to examine a \u00a0few various configurations.<\/p>\n

The basic and simplest \u00a0frame configuration is a quadrotor with either a + or X configuration. Both configurations are similar in the maneuverability and the control\u00a0they provide. An X configuration is common when transporting photography\u00a0equipment because the configuration easily lends itself to the installation of necessary equipment.<\/p>\n

Another common configuration is a hexrotor. This configuration allows for increased payload capacity as\u00a0more motors are able to provide greater thrust. The increased motors also provides an extra fail safe as the copter can be programmed to still fly in the case that one of the propellers is damaged during flight. Although these are the most commonly built configurations, the image below shows a comprehensive overview of frame builds from a trirotor to octarotor.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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A multirotor or multicopter is controlled through the use of two or more rotors. By utilizing differential thrust management and independent speed control\u00a0for each motor, the copter is able to provide lift and directional control. The added benefit of a multirotor design is encompassed in its\u00a0ability to easily hold position and\u00a0perform various flight maneuvers while […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":99,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"\nGeneral Background | UAV-RT<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uavrt.nau.edu\/index.php\/docs\/vehicle\/genback\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"General Background | UAV-RT\" \/>\n<meta property=\"og:description\" content=\"A multirotor or multicopter is controlled through the use of two or more rotors. 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