Abstract:
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.
Abstract:
The delivery of goods to a customer comprises a substantial portion of human activity. To correct address errors and/or to more precisely locate delivery locations, systems are provided to assist human, human operated vehicle, or autonomous vehicles to locate a delivery point. Often the location of a delivery point is inaccurate or imprecise. GPS and other coordinate systems often fail or are imprecise without an unobstructed view of the sky. Even with coordinates available, the delivery point may be different from the coordinates or, more commonly, coordinates that are different from some standard point within a postal address associated with the coordinates. Providing a delivery system that utilizes a broadcasted identifier, such as an identifier associated with the order of the item, the delivery of the item may be made proximate to the source of the broadcasted identifier or further refined using the broadcasted identifier as a reference.
Abstract:
The present invention provides methods and apparatus for unmanned aerial vehicles (UAVs) with improved reliability. According to one aspect of the invention, interference experienced by onboard sensors from onboard electrical components is reduced. According to another aspect of the invention, user-configuration or assembly of electrical components is minimized to reduce user errors.
Abstract:
A technique is directed to operating a UAV. The technique involves launching (or guiding) the UAV into flight. The technique further involves performing a series of aileron (or other control surface) deflection evaluations while the UAV is in flight. The technique further involves performing a UAV remedial operation in response to the series of aileron deflection evaluations indicating abnormal aileron behavior, e.g., the UAV can send a warning message to a ground control station (GCS), land the UAV at a target location, deploy a chute, and so on. Such operation enables detection of an unexpected change in the UAV's center of gravity, e.g., due to a blocked fuel bladder connection, icing on one side of the UAV, mechanical failure of an aileron, etc.
Abstract:
A method enabling an aerial drone not having a TCAS system to avoid an intruder aircraft, the method including the steps of acquiring the position of the intruder aircraft in order to determine the distance between the aerial drone and the intruder aircraft, measuring the angular speed of the intruder aircraft in a horizontal plane, and determining whether the intruder aircraft is fitted with a TCAS system, and, if so, receiving a resolution advisory transmitted by the TCAS of the intruder aircraft and following a previously-determined avoidance path. The invention also provides a drone fitted with a system implementing the method.
Abstract:
Methods and systems are provided for relocatable repeaters for wireless communication links to locations that may present accessibility problems using, for example, small unmanned aerial systems (sUAS). An sUAS implemented as an easy-to-operate, small vertical take-off and landing (VTOL) aircraft with hovering capability for holding station position may provide an extended range, highly secure, high data rate, repeater system for extending the range of point-to-point wireless communication links (also referred to as “crosslinks”) in which repeater locations are easily relocatable with very fast set-up and relocating times. A repeater system using beam forming and power combining techniques enables a very high gain antenna array with very narrow beam width and superb pointing accuracy. The aircraft includes a control system enabling three-dimensional pointing and sustaining directivity of the beam independently of flight path of the aircraft.
Abstract:
The present invention provides systems, methods, and devices related to target tracking by UAVs. The UAV may be configured to receive target information from a control terminal related to a target to be tracked by an imaging device coupled to the UAV. The target information may be used by the UAV to automatically track the target so as to maintain predetermined position and/or size of the target within one or more images captured by the imaging device. The control terminal may be configured to display images from the imaging device as well as allowing user input related to the target information.
Abstract:
Embodiments described herein may relate to systems and methods for navigating to an emergency situation. An alert device may be controlled to issue alerts to draw the attention of bystanders to associated supplies for a situation. An illustrative method involves (a) receiving, by a computing system, a transmission indicating a situation at a designated location; (b) the computing system determining an approximate target area associated with the designated location; (c) the computing system making a determination that an alert device is located within the approximate target area; and (d) in response to the determination that the alert device is located within the approximate target area, the computing system executing instructions to activate at least one alert on the alert device indicating the situation and the designated location of the situation.
Abstract:
The present invention provides methods and apparatus for unmanned aerial vehicles (UAVs) with improved reliability. According to one aspect of the invention, interference experienced by onboard sensors from onboard electrical components is reduced. According to another aspect of the invention, user-configuration or assembly of electrical components is minimized to reduce user errors.
Abstract:
Systems and associated methods for planning and control of a fleet of unmanned vehicles in missions that are coordinated temporally and spatially by geo-location, direction, vehicle orientation, altitude above sea level, and depth below sea level. The unmanned vehicles' transit routes may be fully autonomous, semi-autonomous, or under direct operator control using off board control systems. Means are provided for intervention and transit changes during mission execution. Means are provided to collect, centralize and analyze mission data collected on the set of participating unmanned vehicles.