Segmented Mixing Nozzle for Aircraft Fuel Tank Inerting

The gas flow path is segmented into multiple regions: an outer gas flow path for main gas flow and an inner gas flow path for secondary gas flow. This segmentation allows different gas streams to be introduced separately, improving mixing efficiency while reducing overall pressure loss. The liquid flow path is also segmented with multiple liquid injectors distributed around the periphery, enabling uniform liquid distribution without requiring high pressure

A vaporization chamber is introduced as an intermediary component between the liquid injectors and the catalytic reactor. This chamber provides a dedicated space for fuel vaporization and gas-liquid mixing before the mixture enters the catalytic converter, improving combustion efficiency while allowing the system to operate at lower pressures. The chamber acts as a buffer that facilitates the phase change and mixing processes

Multiple functions are merged into a single integrated nozzle assembly: gas flow distribution, liquid injection, vaporization, and mixing all occur within one compact component. The outer and inner gas flow paths are combined in a concentric arrangement, and multiple liquid injectors are integrated into the nozzle body. This merging achieves high mixing efficiency while minimizing the number of separate components

The vaporization chamber serves multiple functions simultaneously: it provides a mixing zone for gas and liquid, a vaporization chamber for fuel, a flow distribution chamber for uniform mixture delivery, and a pressure equalization volume. This multi-functionality improves oxygen reduction effectiveness without requiring additional separate components for each function