Disclosed is an ice protection system for an aerodynamic surface of an aircraft, a surface having a flow facing side and an inwardly facing side that opposes the flow facing side, the system having: a perforated sheet configured for disposal in the surface; a heating source connected to the perforated sheet; and a suction source disposed to draw ice melted by the heating source through the perforated sheet and heating source.

An arrangement for supplying heated air to a wing anti-icing system on an aircraft propelled by a jet engine includes, but is not limited to, an ejector that is configured for coupling to a wing anti-icing system. The ejector is further configured to receive a first flow of air, to entrain a second flow of air with the first flow of air, the second flow of air having a lower temperature than the first flow of air, to mix the first flow of air with the second flow of air to form a combined flow having a temperature and a volume suitable for use by the wing anti-icing system, and to exhaust the combined flow into the wing anti-icing system.

An arrangement for supplying heated air to a wing anti-icing system on an aircraft propelled by a jet engine includes, but is not limited to, an ejector that is configured for coupling to a wing anti-icing system. The ejector is further configured to receive a first flow of air, to entrain a second flow of air with the first flow of air, the second flow of air having a lower temperature than the first flow of air, to mix the first flow of air with the second flow of air to form a combined flow having a temperature and a volume suitable for use by the wing anti-icing system, and to exhaust the combined flow into the wing anti-icing system.

An anti-icing system at least includes: a precooler that exchanges heat between bleed air and outside air; and an anti-icing unit that receives the bleed air passed through the precooler. A bleed air flow rate adjusting section that adjusts a flow rate of the bleed air supplied to the anti-icing unit adjusts the flow rate of the bleed air to suppress pressure of the bleed air to a pressure upper limit or lower by using relationship r1 and relationship r2. The relationship r1 is a relationship between an altitude and a pressure upper limit of the bleed air. The relationship r2 is a relationship between the pressure upper limit and outside air temperature at which the temperature of the bleed air reaches allowable temperature of ducts and other members through which the bleed air flows. The relationship r2 is provided based on the altitude.

An anti-icing system at least includes: a precooler that exchanges heat between bleed air and outside air; and an anti-icing unit that receives the bleed air passed through the precooler. A bleed air flow rate adjusting section that adjusts a flow rate of the bleed air supplied to the anti-icing unit adjusts the flow rate of the bleed air to suppress pressure of the bleed air to a pressure upper limit or lower by using relationship r1 and relationship r2. The relationship r1 is a relationship between an altitude and a pressure upper limit of the bleed air. The relationship r2 is a relationship between the pressure upper limit and outside air temperature at which the temperature of the bleed air reaches allowable temperature of ducts and other members through which the bleed air flows. The relationship r2 is provided based on the altitude.

A bleed air system for an aircraft includes a turbocompressor including a turbine portion coupled to drive a compressor portion. The compressor portion includes a compressor inlet and a compressor air discharge. The turbine portion includes a turbine inlet and a turbine discharge. A passage delivers air to the compressor inlet from one or more locations of an engine. A passage delivers air to the turbine inlet from at least one or more locations of the engine. A passage receives air from the compressor discharge selectively delivered to one or more locations of the engine. An outlet passage receives air from the turbine discharge communicating airflow to an aircraft system. A controller directs inlet and discharge airflow of the compressor portion and the turbine portion to control operation of the turbocompressor. A gas turbine engine and a method are also disclosed.

A bleed air system for an aircraft includes a turbocompressor including a turbine portion coupled to drive a compressor portion. The compressor portion includes a compressor inlet and a compressor air discharge. The turbine portion includes a turbine inlet and a turbine discharge. A passage delivers air to the compressor inlet from one or more locations of an engine. A passage delivers air to the turbine inlet from at least one or more locations of the engine. A passage receives air from the compressor discharge selectively delivered to one or more locations of the engine. An outlet passage receives air from the turbine discharge communicating airflow to an aircraft system. A controller directs inlet and discharge airflow of the compressor portion and the turbine portion to control operation of the turbocompressor. A gas turbine engine and a method are also disclosed.

An aircraft wing is provided having a wing leading edge, a wing leading edge slat positioned forwardly of the wing leading edge having an internal duct extending in a spanwise direction of the wing leading edge, a cut-out opening in the wing leading edge, a telescopic tube extending through the cut-out opening and connected to the internal duct of the wing leading edge to establish fluid communication with heated air associated with an aircraft anti-icing system, wherein the telescopic tube is moveable between retracted and extended conditions in response to the wing leading edge slat being moved between slat retraction and deployment positions, respectively, and a shuttering mechanism synchronously connected to the telescopic tube to close the cut-out opening in response to the telescopic tube being moved from the retracted condition to the extended condition thereof.

An outlet door is provided for covering an outlet defining an outlet area in a skin (24) of an aircraft component to exhaust a flow of heated air to an outside of the aircraft. The outlet door includes a body defining a door area and extending between a leading edge and a trailing edge and a linkage (38) connecting the body to the aircraft, permitting the body to transition between at least one of an open position and a closed position. In the closed position, the body at least partially occupies the outlet area. In the open position, the body forms an angle with the skin of the aircraft. The leading edge of the body and the skin of the aircraft define a separation (202) therebetween when the body is in the open position. The separation defines and air flow for mixing cold air with the flow of heated air.

An outlet door is provided for covering an outlet defining an outlet area in a skin (24) of an aircraft component to exhaust a flow of heated air to an outside of the aircraft. The outlet door includes a body defining a door area and extending between a leading edge and a trailing edge and a linkage (38) connecting the body to the aircraft, permitting the body to transition between at least one of an open position and a closed position. In the closed position, the body at least partially occupies the outlet area. In the open position, the body forms an angle with the skin of the aircraft. The leading edge of the body and the skin of the aircraft define a separation (202) therebetween when the body is in the open position. The separation defines and air flow for mixing cold air with the flow of heated air.