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High-Temperature Fuel Coking Mitigation Frangible Coatings for Fuel Nozzles and Screens

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-23-C-0015
Agency Tracking Number: N212-127-0110
Amount: $999,917.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N212-127
Solicitation Number: 21.2
Timeline
Solicitation Year: 2021
Award Year: 2023
Award Start Date (Proposal Award Date): 2022-12-29
Award End Date (Contract End Date): 2025-01-15
Small Business Information
410 Sackett Point Road
North Haven, CT 06473-3168
United States
DUNS: 178154456
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Codruta Zoican-Loebick
 (203) 287-3700
 cloebick@precision-combustion.com
Business Contact
 Anthony K. Anderson
Phone: (203) 287-3700
Email: aanderson@precision-combustion.com
Research Institution
N/A
Abstract

Increasing heat loads projected for advanced aircraft of the near future will lead to higher fuel system temperatures. Fuel deposit issues currently prevent long-term fuel system operation at temperatures over ~300-400 F. Thermal fuel decomposition is expected to have the highest negative impact in the vicinity of the fuel injectors, which are wetted by fuel with the highest time-at-temperature exposure. Of specific concern are the "last-chance screens", positioned immediately upstream of the fuel injectors, because the screen openings comprise some of the smallest fuel passages in the entire system. Blockage of these passages can have serious consequences in terms of aircraft propulsion control with these issues exacerbated by the copper contamination of the fuel. In Phase 1 of the project PCI developed and proof-of-concept demonstrated a frangible coating for last-chance screens capable of sloughing off carbonaceous depositions from hot fuel.  In Phase 2 of the project, we will evaluate the coating properties at the larger scale with particular emphasis on fuel system flow conditions and geometries expected in a real aircraft fuel system. Multiple iterations will be executed to reach the 5X MTBO (defined as time to 80 % blockage of the screen) lifetime as predicted from the Phase1 proof-of-concept data. The coating composition and procedure will be applied to other components of interest in the refueling system especially the fuel nozzles under the same test and operating conditions. Prototype coated screens and nozzles will be fabricated and delivered to the Navy for additional testing.

* Information listed above is at the time of submission. *

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