The invention relates to a method for controlling an operating characteristic (for example ground clearance or acceleration) of a vehicle (100) resting on a contact surface (200) by means of at least one landing gear (150) comprising means of actuating (160) adapted to vary a behaviour of the landing gear when the latter is in contact with the contact surface, whereby the said method makes the operating characteristic of the vehicle dependent upon a given set-point by generating a command intended for the means of actuating as a function of a difference (ε) between the operating characteristic and the set-point. According to the invention, the control system comprises the use of an estimation (P.sub.est) of a load (P) seen by the landing gear to generate a modification of the command so as to minimise a variation in the deviation caused by a variation in the load.

The invention relates to a method for controlling an operating characteristic (for example ground clearance or acceleration) of a vehicle (100) resting on a contact surface (200) by means of at least one landing gear (150) comprising means of actuating (160) adapted to vary a behaviour of the landing gear when the latter is in contact with the contact surface, whereby the said method makes the operating characteristic of the vehicle dependent upon a given set-point by generating a command intended for the means of actuating as a function of a difference (ε) between the operating characteristic and the set-point. According to the invention, the control system comprises the use of an estimation (P.sub.est) of a load (P) seen by the landing gear to generate a modification of the command so as to minimise a variation in the deviation caused by a variation in the load.

An aircraft landing event system is disclosed including a processor, the processor being configured to receive aircraft braking performance information from a plurality of aircraft that have performed a landing event on a particular runway. The processor is configured to determine an aircraft braking performance indicator on the basis of the aircraft braking performance information of the plurality of aircraft, and communicate the aircraft braking performance indicator to an aircraft landing system of an approaching aircraft that is about to perform a landing event on the particular runway.

Methods and systems are provided for runway overrun alerts for an aircraft using manually entered parameters for a non-standard runway. The method includes accessing an interface for an enhanced ground proximity warning system (EGPWS). The following parameters are then manually entered: identification of the non-standard runway; a displaced threshold of the non-standard runway; surface conditions of the non-standard runway; a declared length of the non-standard runway; and availability of thrust reversers on the aircraft. The parameters for the aircraft to safely land and stop on the non-standard runway are calculated with the EGPWS. An alert with the EGPWS is generated if the stopping point of the aircraft is near or beyond the end of the non-standard runway.

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.

Systems and methods for establishing an ad-hoc collaboration between unmanned aerial vehicles (UAVs) are provided. A method includes: configuring intent data of a first UAV using a controller of the first UAV; configuring a collaboration plan for the first UAV and a second UAV based on a determination of a shared intent between the first UAV and the second UAV; executing the collaboration plan by flying the first UAV and gathering data using the first UAV based on the collaboration plan; and sharing the gathered data with an operator of the second UAV.

Methods and systems are provided for guiding or otherwise assisting operation of an aircraft when diverting from a flight plan. One method involves determining a gliding trajectory for the aircraft based at least in part on a current altitude of the aircraft, providing a graphical representation of the gliding trajectory for the aircraft, identifying a plurality of landing locations within a range defined by the gliding trajectory from the aircraft, and for each landing location of the plurality of landing locations, providing a graphical representation of a respective landing location with respect to the gliding trajectory at a respective altitude associated with the respective landing location and at a respective distance with respect to a graphical representation of the aircraft corresponding to a respective geographic distance between a current location of the aircraft and the respective landing location.

A relative navigation system comprising of a pair of Global Navigation Satellite System (GNSS) and Inertial Navigation System (INS) units that communicate to provide updated position, velocity and attitude information from a master to a rover. The rover unit produces a carrier based solution that enables the system to reduce the uncorrelated low latency position error between the master and the rover units to less than 50 cm.

Described is a system comprising (a) a UAS registry including a plurality of UAS accounts, (b) a plurality of UAS registration computing systems operable to create UAS accounts for the UAS registry, (c) a plurality of USS computing systems that each provide service to one of a plurality of service areas within an airspace, wherein each USS computing system is operable to: (i) receive, from UAS operators, operation data for UASs operating in the service area served by the USS computing system, (ii) receive, from the other USS computing systems for the airspace, operation data for UASs operating in the other service areas served the other USS computing systems, (iii) combine the operation data received from the UAS operators, with the operation data received from the other USS computing systems, to maintain an airspace-wide UAS database, and (iv) provide a publicly accessible application interface based on the UAS database.

An airport approach assistance system for aircraft includes a controller including electronic circuitry configured to: obtain a first image captured by a camera configured to capture images of a field of view ahead of the aircraft; obtain a second image stored in a database representing a runway where the aircraft is supposed to land; make changes to the first image and/or to the second image, in order to transpose them into a same spatial reference frame; extract a first region of interest from the first image, so as to isolate a landing area; compare the extracted first region of interest with a second region of interest associated with the second image; and generate a signal according to a comparison result. Thus, a pilot of the aircraft is assisted in confirming that the landing takes place on the expected landing runway.