Environmentally responsible aviation (ERA) phase 2 for low NOX fuel flexible combustor integration NASA's goals are to expand the viable and well-informed trade space for vehicle design decisions…

Environmentally responsible aviation (ERA) phase 2 for low NOX fuel flexible combustor integration NASA's goals are to expand the viable and well-informed trade space for vehicle design decisions and enable simultaneous realization of engine noise, emissions, and performance goals. An advanced combustor for high pressure and high by-pass ratio engines is required to simultaneously meet fuel burn and NOX reduction goals. The goals of the proposed work are to demonstrate emission goals through sector RIG and full annular combustor testing and demonstrate effectiveness of conventional and alternative fuels to meet combustor performance, operability, and durability goals. This effort will attempt to mature the combustor technology identified in ERA phase I that is capable of meeting NASA's N+2 NOX goals into a hardware demonstration that will advance the TRL from the current TRL 4 to TRL 5 via a test campaign utilizing NASA's CE5 and NASA's advanced subsonic combustion RIG (ASCR) test rigs as well as a full annular RIG provided by the proposer. NASA will award up to 1 award to perform the solicited research. A sector combustor RIG will be used to demonstrate improved operability over the ERA phase I combustor over the following operational conditions: - inlet temperature: ambient to 1300 DEG F - inlet pressure: 1 to 50 ATM - flame temperature up to 3000F the work proposed includes: - utilize the NASA CE-5 flametube facility to screen injector designs prior to installation in ASCR . - contractor delivery of a new or refurbished multi-injector sector for evaluation at and with NASA at realistic engine conditions. Realistic engine conditions will define the combustor inlet pressure and temperature levels based on the offeror's advanced engine concept capable of meeting the N+2 NASA noise, emissions, and performance goals. - conduct multi-injector ARC-sector design, improvement, and testing at realistic engine conditions utilizing the NASA ASCR and CE-5 facilities. - demonstrate burning blends of 50% alternative fuel to 50% jet fuel in NASA's CE-5 flametube combustor and ASCR facilities, and proposer provided full annular test RIG, using test injector company provided hardware. - develop enabling technologies identified in the phase I contract to a level that allows successful demonstration in the full annular RIG. - demonstrate N+2-level NOX reduction for 100 HRS in a full-annular combustor in existing contractor facility. - generate additional technology development roadmaps which describe what is required to advance the technology from TRL 5 to 6. Task order NNC13TA45T will take the form of a cost sharing task with pratt and whitney