A UAV obstacle avoidance system and a control method thereof are provided. The UAV obstacle avoidance system comprises a cover, at least two obstacle avoidance lens modules and an infrared light source. The infrared light source is located between the at least two obstacle avoidance lens modules. Each obstacle avoidance lens module comprises a sensing unit and an infrared shutter. The sensing unit comprises a filter layer and a sensing element. The filter layer is located between the cover and the sensing element, and the filter layer has at least one filter region, wherein one of the filter regions is an infrared filter region. The infrared shutter is located between the cover and the sensing unit and configured to switch an infrared cut-off filter to a turn-on state or a turn-off state. The UAV obstacle avoidance system and the control method thereof can be used for day and night environments.

A lighting system for an aircraft includes at least one light mounted on at least one landing gear assembly of the aircraft. The at least one light is configured to emit ultraviolet light when the at least one landing gear assembly is in a lowered condition.

A method of collision warning using broad antenna pattern ultra-wide band (UWB) radar includes emitting a first radar ping from a broad beam UWB antenna and receiving a first return signal identifying an object. A first hemisphere with a first radius is determined for the object. A second ping, second return and second hemisphere is defined for the object. At the intersection of the hemispheres, an object ring is defined. The radius of the object ring is compared with the radius of a collision cylinder (e.g., representing a safe distance around a system or device, such as a drone). The object may be identified as posing a collision threat when the radius of the object ring is smaller than the radius of the collision cylinder.

A real-time aircraft bird congestion indicator system for measuring congestion in an airspace between aircraft and birds uses one or more radars to continuously survey an airspace around an airport or aerodrome and continuously generate aircraft tracks and bird tracks in the airspace. A congestion processor connected to the radar(s) receives the aircraft and bird tracks and processes them to periodically generate a congestion indicator that measures the congestion in the airspace. A display processor connected to the congestion processor receives the congestion indicator which is updated periodically by the congestion processor and displays the congestion indicator to a user, generates an alert if the congestion indicator falls outside set operating limits, and/or sends the congestion indicator or alert to another system.

An aircraft structure protected from collisions with foreign objects includes a first support proximate to an aircraft structure root; first sheets attached to the first support to form a first leading edge portion of the aircraft structure; a second support proximate to an outer end of the aircraft structure; second sheets attached to the second support to form a second leading edge portion; and a door including one or more ribs disposed between the first and second supports and configured to give shape to a third leading edge portion of the aircraft structure; and third sheets, attached to the ribs to form the third portion of the leading edge; wherein the first support, the first sheets, the second support, the second sheets, the one or more ribs, and the third sheets are disposed to mitigate damage from a foreign object collision by absorbing kinetic energy from a collision.

An energy absorbing arrangement may comprise an inner barrel comprising a centerline axis, an outer barrel, a webbing extending between the outer barrel and the inner barrel and configured to be offset from a nose lip by a distance, the webbing being folded together to form a plurality of folds, the plurality of folds being stitched together via a plurality of stitches, wherein the webbing is configured to absorb energy from an object in response to the object passing through the nose lip and applying a force to the webbing.

A method, apparatus, and system for automating detection and avoidance for an aircraft. A process activates a set of lamps visible on an exterior of an aircraft to emit light. The process modulates an intensity of light from the set of lamps at a set of frequencies that is detectable by a remote collision avoidance system in a remote aircraft during flight. The light from the set of lamps at the set of frequencies is perceived as continuous by a person looking at the aircraft in a sky, reducing visibility of the aircraft in the sky.

A support device for a radio equipment of an aircraft, radio system and aircraft are provided. The support device includes a fastening structure (31), intended to be secured to a lower surface of a fuselage of an aircraft, and a support platform (33) of the radio equipment (25). The support platform (33) is mounted pivoting on the fastening structure (31) around a pivot axis (A) between an operational position and a backup position. The support device comprises a locking mechanism (56), able to be actuated from a locked configuration, in which said locking mechanism (56) keeps the support platform (33) in its operational position while preventing any pivoting of the support platform (33), to an unlocked configuration, in which the locking mechanism (56) allows the support platform (33) to pivot relative to the fastening structure (31).

In an aircraft, the airframe includes a windshield frame, with an energy attenuating windshield corner support extending across a corner of the windshield frame. The energy attenuating windshield corner support is configured to deform upon an impact to a windshield disposed in the windshield frame. This energy attenuating windshield corner support may be shaped and/or sized to enable, and/or comprised of a material that enables, the aircraft windshield corner support to deform upon the impact to the windshield disposed in the windshield frame, attenuating energy of the impact to the windshield disposed in the windshield frame.

A system and method for preventing flight accidents of an air mobility to prevent collision between the air mobility and birds and to secure flight stability by forming an image in front of the air mobility during flight of the air mobility such that birds perceive and avoid the image.