The present invention relates to a method for replacing a signal controlling an actuator in a remote-controlled flying device with another signal. A flight controller supplies control signals to a safety device, and the signal to be replaced may be a signal to be transmitted by the safety device to a speed controller of at least one motor, or to a servo unit controlling the same, or the signal to be replaced may be a signal to be transmitted from the safety device to a servo unit controlling legs, a camera rack, a camera, a stabilizing system or an electric motor of the flying device. A replacement signal is a signal stored in a memory of the safety device. The replacement signal may be capable of controlling the speed controller directly or via the servo unit, in such a way that power transmission to said motor/motors is stopped or reduced, and this motor is/these motors are switched off or its/their rotation is decelerated, or the replacement signal may be capable of controlling said servo unit in such a way that said actuator is moved to a second position. The replacement signal may be a signal to be transmitted from a receiver past a flight controller, capable of controlling the speed controller or servo unit of the motor in such a way that power transmission to the motor is stopped or reduced, or to control said actuator in such a way that this actuator is moved to another position.

The present invention relates to a method for replacing a signal controlling an actuator in a remote-controlled flying device with another signal. A flight controller supplies control signals to a safety device, and the signal to be replaced may be a signal to be transmitted by the safety device to a speed controller of at least one motor, or to a servo unit controlling the same, or the signal to be replaced may be a signal to be transmitted from the safety device to a servo unit controlling legs, a camera rack, a camera, a stabilizing system or an electric motor of the flying device. A replacement signal is a signal stored in a memory of the safety device. The replacement signal may be capable of controlling the speed controller directly or via the servo unit, in such a way that power transmission to said motor/motors is stopped or reduced, and this motor is/these motors are switched off or its/their rotation is decelerated, or the replacement signal may be capable of controlling said servo unit in such a way that said actuator is moved to a second position. The replacement signal may be a signal to be transmitted from a receiver past a flight controller, capable of controlling the speed controller or servo unit of the motor in such a way that power transmission to the motor is stopped or reduced, or to control said actuator in such a way that this actuator is moved to another position.

A method includes generating an initial flight context that includes a set of unresolved flight constraints. The method further includes generating a decision tree based on the initial flight context. The decision tree includes a plurality of flight contexts corresponding to leaves of the decision tree. The method also includes expanding the decision tree according to a greedy best-first strategy that selects a flight context of the decision tree for expansion based on a fitness value assigned to the flight context. The method includes selecting, as a piloting strategy, a flight context of the decision tree that includes a sequence of actions to resolve each of the unresolved flight constraints. The method further includes flying an aircraft according to the piloting strategy.

A method includes generating an initial flight context that includes a set of unresolved flight constraints. The method further includes generating a decision tree based on the initial flight context. The decision tree includes a plurality of flight contexts corresponding to leaves of the decision tree. The method also includes expanding the decision tree according to a greedy best-first strategy that selects a flight context of the decision tree for expansion based on a fitness value assigned to the flight context. The method includes selecting, as a piloting strategy, a flight context of the decision tree that includes a sequence of actions to resolve each of the unresolved flight constraints. The method further includes flying an aircraft according to the piloting strategy.

Embodiments described herein may help to provide support via a fleet of unmanned aerial vehicles (UAVs). An illustrative medical-support system may include multiple UAVs, which are configured to provide support for a number of different situations. Further, the medical-support system may be configured to: (a) identify a remote situation, (b) determine a target location corresponding to the situation, (c) select a UAV from the fleet of UAVs, where the selection of the UAV is based on a determination that the selected UAV is configured for the identified situation, and (d) cause the selected UAV to travel to the target location to provide support.

Embodiments described herein may help to provide support via a fleet of unmanned aerial vehicles (UAVs). An illustrative medical-support system may include multiple UAVs, which are configured to provide support for a number of different situations. Further, the medical-support system may be configured to: (a) identify a remote situation, (b) determine a target location corresponding to the situation, (c) select a UAV from the fleet of UAVs, where the selection of the UAV is based on a determination that the selected UAV is configured for the identified situation, and (d) cause the selected UAV to travel to the target location to provide support.

Methods and apparatus, including computer program products, are provided for drone delivery of products. In one aspect there is provided a method, which may include selecting, at a user equipment, a product; and selecting, by the user equipment, a three-dimensional location where a drone deposits the selected product. Related systems, apparatus, and articles of manufacture are also disclosed.

A method and device for assisting initiation of a flare maneuver of an aircraft during a landing. The device includes an acquisition unit for acquiring current values of flight parameters of the aircraft, including the current height of the aircraft with respect to the ground, a computation unit for computing a first reference height and a second reference height, corresponding to a height starting from which the aircraft attains a current start of flare height while maintaining its current descent conditions over a predetermined first duration and over a predetermined second duration respectively, and an acoustic emission unit for emitting at least two sound signals in the cockpit of the aircraft, namely a first sound signal when the current height of the aircraft attains the first reference height during the descent and a second sound signal when the current height of the aircraft attains the second reference height during descent.

A method and device for assisting initiation of a flare maneuver of an aircraft during a landing. The device includes an acquisition unit for acquiring current values of flight parameters of the aircraft, including the current height of the aircraft with respect to the ground, a computation unit for computing a first reference height and a second reference height, corresponding to a height starting from which the aircraft attains a current start of flare height while maintaining its current descent conditions over a predetermined first duration and over a predetermined second duration respectively, and an acoustic emission unit for emitting at least two sound signals in the cockpit of the aircraft, namely a first sound signal when the current height of the aircraft attains the first reference height during the descent and a second sound signal when the current height of the aircraft attains the second reference height during descent.

Systems and methods for mechanically rotating an aircraft about its center-of-gravity (C.sub.G) are disclosed. The system can enable the rear, or main, landing gear to squat, while the nose landing gear raises to generate a positive pitch angle for the aircraft for takeoff or landing. The system can also enable the nose gear and main gear to return to a relatively level fuselage attitude for ground operations. The system can include one or more hydraulically linked hydraulic cylinders to control the overall height of the nose gear and the main gear. Because the hydraulic cylinders are linked, a change on the length of the nose cylinder generates a proportional, and opposite, change in the length of the main cylinder, and vice-versa. A method and control system for monitoring and controlling the relative positions of the nose gear and main gear is also disclosed.