8results about "Model aircraft" patented technology

To improve maneuvering easiness when executing a maneuver involving backward movement of a maneuvering object body.SOLUTION: A gyro unit to be mounted on a maneuvering object body maneuvered based on a maneuvering signal received from the outside, the gyro unit includes: a gyro sensor; a calculation part for executing calculation for attitude control of the maneuvering object body based on a maneuvering signal and a detection signal of the gyro sensor, and a control part for executing control such that a control direction of the attitude control is switched between when the maneuvering object body moves forward and backward.SELECTED DRAWING: Figure 3

Disclosed here are systems for detachable airframe components including detachable nose cones, propeller assemblies and motors. In some example embodiments, the assemblies include a nose cone with a connection receiver, a motor assembly with a rotatable section, where the rotatable section includes torque arms configured to secure with the nose cone connection receiver, and a propeller assembly, configured to connect to the nose cone.

Provided is an unmanned aircraft that is reduced in size in an accommodated state and is easily simplified in structure. The unmanned aircraft includes: a body extending in a front-rear direction; a fixed wing connected to the body and including a right wing portion and a left wing portion; and a rotation support that supports the fixed wing with respect to the body such that the fixed wing is angularly displaced between a flying state and the accommodated state.

To provide a method and an apparatus for easily surveying a road condition on the basis of photographed images photographed from the sky even when there is an obstacle that partially covers a road surface when viewed from the sky.SOLUTION: An ortho-image creation method includes: a first photographing step of photographing a road, a road surface of which is partially covered by an obstacle when viewed from the sky, from an altitude higher than the obstacle to obtain a plurality of first photographed images; a second photographing step of photographing an area covered by the obstacle from an altitude lower than the obstacle to obtain a plurality of second photographed images; a first coordinate acquisition step of acquiring three-dimensional coordinates of a first feature point located outside the area covered by the obstacle and included in the plurality of first photographed images; a second coordinate acquisition step of acquiring three-dimensional coordinates of a second feature point located in the area covered by the obstacle and included in the plurality of second photographed images; and an ortho-image creation step of, on the basis of them, correcting the area covered by the obstacle on the road surface to an area not covered by the obstacle.SELECTED DRAWING: Figure 5

According to a first aspect of the invention, there is provided a method for operating a multicopter experiencing a failure during flight, the multicopter comprising a body, and at least four effectors attached to the body, each operable to produce both a torque and a thrust force which can cause the multicopter to fly when not experiencing said failure. The method may comprise the step of identifying a failure wherein the failure affects the torque and / or thrust force produced by an effector, and in response to identifying a failure carrying out the following steps, (1) computing an estimate of the orientation of a primary axis of said body with respect to a predefined reference frame, wherein said primary axis is an axis about which said multicopter rotates when flying, (2) computing an estimate of the angular velocity of said multicopter, (3) controlling one or more of said at least four effectors based on said estimate of the orientation of the primary axis of said body with respect to said predefined reference frame and said estimate of the angular velocity of the multicopter. The step of controlling one or more of said at least four effectors may be performed such that (a) said one or more effectors collectively produce a torque along said primary axis and a torque perpendicular to said primary axis, wherein (i) the torque along said primary axis causes said multicopter to rotate about said primary axis, and (ii) the torque perpendicular to said primary axis causes said multicopter to move such that the orientation of said primary axis converges to a target orientation with respect to said predefined reference frame, and (b) such that said one or more effectors individually produce a thrust force along said primary axis.

A motor assembly that includes a motor having a motor casing, a rotatable shaft extending from the motor casing to a shaft length and a hub coupled to the rotatable shaft, the hub having a circumferential skid surface disposed immediately proximal to the motor casing and having a channel configured to seat a propeller, when a propeller is present, wherein a bending moment applied to the shaft through the hub results in the circumferential skid surface contacting the motor casing.

To provide a method and an apparatus for easily surveying a road condition on the basis of photographed images photographed from the sky even when there is an obstacle that partially covers a road surface when viewed from the sky.SOLUTION: An ortho-image creation method includes: a first photographing step of photographing a road, a road surface of which is partially covered by an obstacle when viewed from the sky, from an altitude higher than the obstacle to obtain a plurality of first photographed images; a second photographing step of photographing an area covered by the obstacle from an altitude lower than the obstacle to obtain a plurality of second photographed images; a first coordinate acquisition step of acquiring three-dimensional coordinates of a first feature point located outside the area covered by the obstacle and included in the plurality of first photographed images; a second coordinate acquisition step of acquiring three-dimensional coordinates of a second feature point located in the area covered by the obstacle and included in the plurality of second photographed images; and an ortho-image creation step of, on the basis of them, correcting the area covered by the obstacle on the road surface to an area not covered by the obstacle.SELECTED DRAWING: Figure 5

A foldable flight device is provided, comprising: a housing including a first housing portion and a second housing portion forming an enclosed space; and a motor drive assembly including a drive motor and a drive shaft driven by the drive motor. The drive shaft receives the first housing portion and is coupled to the second housing portion, wherein operation of the drive motor drives the drive shaft to move the first housing portion from a closed position adjacent to the second housing portion to an open position spaced apart from the second housing portion. A rotor hub is rotatably driven by the drive motor. When the first housing portion is in the closed position, at least two rotor blades are coupled thereto and positioned within the enclosed space in a folded position, and when the first housing portion is in the open position, at least two rotor blades extend beyond the enclosed space in an extended position.