The communication apparatus (1100) configured to be installed in a first aircraft (1b) comprises a controller (1110) and a transmitter (1106). The controller (1110) is configured to acquire resource information and determine a communication condition based on the resource information, the resource information being related to a second aircraft (1a) different from the first aircraft (1b) or to a radio altimeter installed in the second aircraft (1a). The transmitter (1106) is configured to transmit transmission data to one other communication apparatus installed in the first aircraft (1b), according to the communication condition.

A method of assisting in piloting an aircraft having a fuselage, the aircraft having a first side arrangement and a second side arrangement, which arrangements are disposed laterally on either side of the fuselage, and each of them participates in the movement of the aircraft. During an assistance phase, the method includes the following steps: measuring a value of a first ground clearance of the first side arrangement and a value of a second ground clearance of the second side arrangement; and displaying on a screen at least one symbol that varies as a function of the variation in the value of the first ground clearance and/or of the variation in the value of the second ground clearance.

A UAV including a first barometer and a processing unit is provided. The first barometer provides a first air pressure value. The processing unit is coupled to the first barometer for receiving the first air pressure value from the first barometer, performing timing-synchronization on the first air pressure value provided by the first barometer and an external reference air pressure value provided by an external reference barometer to obtain a timing-synchronized first air pressure value and recalculating the timing-synchronized first air pressure value to generate a compensated air pressure value, wherein the processing unit performs data fusion calculation on the first air pressure value, the compensated air pressure value and a sensor data to obtain a target fused data and real-timely controls the altitude and the posture of the UAV according to the target fused data.

An unmanned aerial vehicle (UAV) includes a vehicle body, one or more propulsion units coupled to the vehicle body and configured to effect movement of the UAV, and one or more processors coupled to the one or more propulsion units and individually or collectively configured to receive one or more sets of altitude restrictions for the UAV, receive location information indicating a current location of the UAV, determine a priority of the one or more sets of altitude restrictions by which the UAV abides based on the location information, select a set from the one or more sets of altitude restrictions based on the determined priority, and generate control signals to control the one or more propulsion units such that the UAV is operated in compliance with the selected set of altitude restrictions.

An unmanned aerial vehicle (UAV) includes a vehicle body, one or more propulsion units coupled to the vehicle body and configured to effect movement of the UAV, and one or more processors coupled to the one or more propulsion units and individually or collectively configured to receive one or more sets of altitude restrictions for the UAV, receive location information indicating a current location of the UAV, determine a priority of the one or more sets of altitude restrictions by which the UAV abides based on the location information, select a set from the one or more sets of altitude restrictions based on the determined priority, and generate control signals to control the one or more propulsion units such that the UAV is operated in compliance with the selected set of altitude restrictions.

The present disclosure pertains to a system for effectuating presentation of a terrain around a vehicle on a display in the vehicle. In some implementations, the system receives information related to the vehicle's location, the height above the ground surface of the terrain, and the vehicle's orientation from one or more first sensors coupled to the vehicle; obtains a three dimensional topographical map of a terrain around the vehicle based on the location of the vehicle; and receives imagery data from one or more second sensors coupled to the vehicle, the imagery data corresponding to the terrain, wherein the imagery data comprises instantaneous imagery and previously recorded imagery. The system effectuates presentation of the imagery data corresponding to the terrain on the three dimensional topographical map based on the location, the height above the ground surface of the terrain, and the orientation of the vehicle.

A smoke mitigation system for an aircraft includes an exhaust shutter in an upper region of a fuselage of the aircraft. The exhaust shutter has a closed position in which the exhaust shutter does not exchange air from outside of the fuselage with air inside of a passenger cabin that is within the fuselage and an open position in which the exhaust shutter exchanges air from outside of the fuselage and inside of the passenger cabin, thereby enabling escape of smoke from the passenger cabin. The system includes one or more devices for opening the exhaust shutter and a device for initiating opening of the exhaust shutter. The device for initiating opening of the exhaust shutter includes mechanisms for determining that it is safe to open the exhaust shutter.

Methods, apparatuses, and systems for predicting radio altimeter failures are provided. An example method may include determining a first plurality of altitude values associated with a first radio altimeter, determining a second plurality of altitude values associated with a second radio altimeter, calculating a first level feature based at least in part on the first plurality of altitude values and the second plurality of altitude values, and determining a radio altimeter failure indicator based at least in part on the first level feature.

A method and a system for establishing a route of an unmanned aerial vehicle are provided. The method includes identifying an object from surface scanning data and shaping a space, which facilitates autonomous flight, as a layer, collecting surface image data for a flight path from the shaped layer, and analyzing a change in image resolution according to a distance from the object through the collected surface image data and extracting an altitude value on a flight route.

A method of positioning an instrument by an unmanned aircraft for measurement purposes relating to a target surface is provided. The method includes coupling the instrument to the unmanned aircraft and moving the unmanned aircraft to position the instrument away from the target surface. The method further includes stabilizing the unmanned aircraft to maintain a constant altitude and a level attitude relative to the target surface and orientating the instrument perpendicular to the target surface. A measurement is conducted by the instrument while the instrument is orientated perpendicular to the target surface. The method also includes transmitting the measurement to a receiver.