Patent ID: 7081153

Claim:
A gas generating system comprising: a duct assembly for ducting an air stream, the duct assembly having: a bleed air inlet; a ram air inlet; an air stream exit; and a control loop system; a primary heat exchanger for receiving the air stream from the duct assembly and cooling the air stream, the primary heat exchanger located downstream from the bleed air inlet and located downstream from the ram air inlet; a gas generating system heat exchanger for receiving the air stream from the duct assembly, cooling the air stream, and providing the cooled air stream to the duct assembly; a first temperature sensor and a second temperature sensor, each sensor for determining temperature in the duct assembly and generating a temperature value corresponding to the temperature, each temperature sensor mechanically associated with the duct assembly; a controller monitor for receiving a temperature value and a pressure value, and generating a corresponding command signal; a valve for receiving and responding to the command signal, the valve selected from the group consisting of a pressure regulating and shutoff valve, check valve, a flow shutoff valve, an ejector shutoff valve, a thermal shutoff valve, an ASM shutoff valve, and an isolation valve; an air separation module (ASM) assembly having a primary module and a secondary module, each module for receiving the air stream from the duct assembly; separating nitrogen enriched air (NEA) from the air stream; and providing the NEA to the duct assembly, the ASM assembly located downstream from the temperature sensor; a flow control orifice for controlling receiving and regulating NEA flow from the ASM assembly via the duct assembly, the flow control orifice associated with a portion of the duct assembly located downstream from the ASM assembly; and an NEA check valve for preventing entry of contaminants into the ASM assembly, the NEA check valve located downstream from the flow control orifice.