Abstract: A system is disclosed for treating a biologically active surface or material and inerting a protected space. Water is delivered to an anode of an electrochemical cell with the anode and a cathode separated by a proton transfer medium separator. A voltage difference is applied between the anode and the cathode to electrolyze water at the anode to form a mixture of protons and ozone. The protons are transferred across the separator to the cathode, and air is delivered to the cathode where oxygen is reduced to generate oxygen-depleted air, which is directed to the protected space. The ozone is transferred to an ozone storage or distribution system, and ozone is transferred from the ozone storage or distribution system to the biologically active surface or material.

Abstract: A heat exchanger cleaning arrangement includes a spray tube array configured to be attached to a heat exchanger. The spray tube array includes at least one tube, a plurality of nozzles, and a connector. The plurality of nozzles is configured to port pressurized fluid from the at least one tube toward the heat exchanger. The connector is in operable communication with the spray bar array and is configured such that a pressurized fluid source can be attached to the connector for porting fluid from the pressurized fluid source to the plurality of nozzles.

Abstract: Disclosed is an air cycle machine (ACM) having: a turbine; a compressor; a compressor shaft connected to the compressor and configured to receive rotational energy from a gearbox; and a turbine shaft connected to the turbine and configured to provide rotational energy to the gearbox; wherein the turbine shaft and the compressor shaft operate at different rotational speeds.

Abstract: An environmental control system for an aircraft according to an example of the present disclosure includes a first turbine coupled to an engine and a second turbine coupled to a compressor. One or more ducts are configured to provide bleed air from the engine to the first and second turbines and the compressor such that the first and second turbines and the compressor condition the bleed air. A method of conditioning air is also disclosed.

Abstract: An integrated fuel and environmental control system is provided and includes a first heat exchanger in which fuel and oil thermally communicate and a second heat exchanger disposable in a super-cooled fluid flow. The second heat exchanger is receptive of at least one of the fuel and oil from the first heat exchanger whereby the at least one of the fuel and oil thermally communicate with the super-cooled fluid flow. The second heat exchanger is also receptive of a second fluid whereby the second fluid thermally communicates with the super-cooled fluid flow downstream from the thermal communication of the super-cooled fluid flow with the at least one of the fuel and oil.

Abstract: An integrated fuel and environmental control system is provided and includes a first heat exchanger in which fuel and oil thermally communicate and a second heat exchanger disposable in a super-cooled fluid flow. The second heat exchanger is receptive of at least one of the fuel and oil from the first heat exchanger whereby the at least one of the fuel and oil thermally communicate with the super-cooled fluid flow. The second heat exchanger is also receptive of a second fluid whereby the second fluid thermally communicates with the super-cooled fluid flow downstream from the thermal communication of the super-cooled fluid flow with the at least one of the fuel and oil.

Abstract: An environmental control system of an aircraft includes a ram air circuit including a ram air shell having a heat exchanger positioned therein and a dehumidification system arranged in fluid communication with the ram air circuit. A plurality of expansion devices is arranged in fluid communication with the ram air circuit and the dehumidification system. At least one of the expansion devices is a simple cycle expansion device.