An aircraft platform includes a base, a landing pad, a level sensor, and at least one actuator. The landing pad is supported on the base. The level sensor is configured to detect an inclination angle of at least one of the landing pad and the base with respect to a level ground. The at least one actuator is connected to change an inclination of the landing pad.

An unmanned delivery system includes a self-propelled robot, an unmanned aerial vehicle which transports a package to an intermediate location on the way of delivering the package, and robot circuitry which controls the self-propelled robot so that the self-propelled robot delivers to a receiver's address the package which is unloaded at the intermediate location.

An unmanned delivery system includes a self-propelled robot, an unmanned aerial vehicle which transports a package to an intermediate location on the way of delivering the package, and robot circuitry which controls the self-propelled robot so that the self-propelled robot delivers to a receiver's address the package which is unloaded at the intermediate location.

The present embodiments disclose a torque dependent and resonant operating thrust-generating rotor assembly including a cyclic pitch control system for controlling tilting moments about a longitudinal rotor blade axis of one or more rotor blades, in order to control the pitch angle of the rotor blades and thereby also the horizontal movements of a helicopter vehicle or a rotary wing aircraft. A rotor torque assembly of the rotor assembly is further configured to operate in resonance, thereby providing a resonant gain effecting a rotational offset in relation to changes in torque generated by the motor.

A method of providing communication coverage includes collecting a location of an unmanned aerial vehicle (UAV) while the UAV is flying along a flight path, determining a communication signal distribution in a proximity of the location, determining one or more locations for arranging one or more relays based on the communication signal distribution to improve communication coverage along the flight path, and instructing the UAV to communicate with a user terminal via at least one of the one or more relays when the UAV is determined, based on the communication signal distribution, to be incapable of directly communicating with the user terminal at a predetermined minimum quality level.

An aircraft having an electric motor coupled to a rotor and an instrument electronically connected to the electric motor and configured to communicate a time available value before a motor condition reaches a motor condition limit.

According to one implementation of the present disclosure, a method for formation flight is disclosed. The method includes: during flight, arranging for a first aircraft to fly into a proximity range of a second aircraft; and determining first aircraft positioning based on power consumption data of the first aircraft, where the first aircraft positioning corresponds to power-reducing formation flight of the first aircraft.

A power apparatus including: a first engine (13) and a second engine (14) symmetrically arranged side by side; a first rotating shaft (21) connected to an output end of the first engine; a second rotating shaft (22) connected to an output end of the second engine; and a speed reducer (3) connected to the first rotating shaft and the second rotating shaft, where a side face of the first engine facing away from the second engine and a side face of the second engine facing away from the first engine are each provided with an exhaust port. Further provided is an unmanned helicopter including the power apparatus.

A power system includes a speed reducer, and a first turboshaft engine and a second turboshaft engine configured to drive the speed reducer. The speed reducer includes an output shaft. The first turboshaft engine is mounted on a first side of the speed reducer, the second turboshaft engine is mounted on a second side of the speed reducer, and the first turboshaft engine and the second turboshaft engine are arranged symmetrically about the output shaft.

Techniques are described for configuring a monitoring system to assist users during a detected emergency condition at a property. In some implementations, sensor data from one or more sensors that are located at the property are obtained by a monitoring system that is configured to monitor the property. A determination that there is an emergency condition at the property is made by the monitoring system based on the sensor data, determining. A location of a person inside the property is determined by the monitoring system based on the sensor data. A first path to the person and a second path to guide the person away from the emergency condition are determined by the monitoring system. The first path to the person and the second path to guide the person away from the emergency condition are navigated by a computing device of the monitoring system.