An aircraft includes an environmental control system having a bleed air inlet, a gas turbine engine having a low pressure bleed air supply and a high pressure bleed air supply, and a turbo air cycle machine. The turbo air cycle machine includes a compressor fluidly coupled to the low pressure bleed air supply, as well as a turbine fluidly coupled to at least one of the low pressure bleed air supply or the high pressure bleed air supply.

An assembly for connecting an air connection fitting to a pneumatic de-icer of an aircraft includes a molded base and a machined insert. The molded base includes a flexible material and forms a sealing interface with a portion of the pneumatic de-icer. The machined insert is set into the molded base and includes a radially inward threaded surface that forms an opening extending axially through the machined insert. The radially inward threaded surface is configured to mate with a terminal end of the air connection fitting.

An assembly for connecting an air connection fitting to a pneumatic de-icer of an aircraft includes a molded base and a machined insert. The molded base includes a flexible material and forms a sealing interface with a portion of the pneumatic de-icer. The machined insert is set into the molded base and includes a radially inward threaded surface that forms an opening extending axially through the machined insert. The radially inward threaded surface is configured to mate with a terminal end of the air connection fitting.

Systems and methods for operating sensors in an aircraft are provided. Aspects include receiving, by a processor associated with a sensor, a first request to test a transmitter function of the sensor, transmitting a test message to one or more other sensors associated with the aircraft, and listening to a transmitter associated with each of the one or more other sensors to determine a transmitter status of the sensor, wherein the transmitter status of the sensor is a pass status based on receiving a confirmation from at least one of the one or more other sensors. Aspects also include transmitting air data parameters and health status parameters associated with the air data probe to the one or more other air data probes.

An aircraft includes a fuselage and an engine housed in the fuselage. A ram-air engine inlet is formed on an exterior of the fuselage. The ram-air engine inlet is defined, at least in part, by a cowling door. The cowling door is moveable between a closed position and an open position. An intake duct fluidly couples the ram-air engine inlet to the engine. A filter is disposed across the intake duct. A bypass duct is formed in the ram-air engine inlet aft of the intake duct. The bypass duct is operable to be selectively opened and closed.

A system for modifying a location of a water impingement limit on an airfoil of an aircraft includes a flight control computer configured to receive data representative of environmental parameters in an environment of a flight path of an aircraft, determine, based on the environmental parameters, an existence of icing conditions to which the aircraft is currently subjected or is predicted to be subjected, and generate, based on the existence of icing conditions, a command signal for actuating a movable surface of the aircraft. The system further includes a surface actuator configured to receive the command signal from the flight control computer and adjust the movable surface in a manner causing an increase in an angle of attack of the airfoil to thereby modify a water impingement limit on the airfoil.

A system for modifying a location of a water impingement limit on an airfoil of an aircraft includes a flight control computer configured to receive data representative of environmental parameters in an environment of a flight path of an aircraft, determine, based on the environmental parameters, an existence of icing conditions to which the aircraft is currently subjected or is predicted to be subjected, and generate, based on the existence of icing conditions, a command signal for actuating a movable surface of the aircraft. The system further includes a surface actuator configured to receive the command signal from the flight control computer and adjust the movable surface in a manner causing an increase in an angle of attack of the airfoil to thereby modify a water impingement limit on the airfoil.

An arrangement for mechanically changing a surface includes an insulating layer, a pair of electrodes, which is arranged on or in the insulating layer, and a piezo element, which is arranged on or in the insulating layer. The piezo element is separated from the pair of electrodes by the insulating layer. The pair of electrodes is designed to generate in a region of the piezo element an electric field, which causes the piezo element to carry out a mechanical change of shape, in order in this way to mechanically change a surface of the arrangement. The pair of electrodes is also designed to generate the electric field such that the electric field has a minimum field strength in a surrounding area of the arrangement, in order in this way to generate a plasma in the surrounding area of the arrangement.

A method and apparatus combining an aircraft wing and engine ice protection system with an aircraft electronic cooling system.

A method of making an adhesive for an ice protection assembly includes mixing ferrous nanoparticles into the adhesive. Removal of the adhesive for ice protection assembly inspection or repair includes heating the ferrous nanoparticles in the adhesive to soften the adhesive and allow for easy removal or repositioning of the ice protection assembly.