Highly Compact Metallic Heat Exchangers for Extreme Environments (EEHX) Dr. Ali Yousefiani Boeing Research & Technology Develop heat exchangers for use in long-life sCO 2 Brayton power cycles, which can be employed in high efficiency Integrated Power & Thermal Management Systems (IPTMS) for hypersonic aircraft Project Vision
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Highly Compact Metallic Heat
Exchangers for Extreme
Environments (EEHX)
Dr. Ali Yousefiani
Boeing Research & Technology
Develop heat exchangers for use
in long-life sCO2 Brayton power
cycles, which can be employed in
high efficiency Integrated Power
& Thermal Management Systems
(IPTMS) for hypersonic aircraft
Project Vision
Project Overview
Historical Context:‣ BR&T has been developing EEHX (~800C) since 2008. Long history of development of performance enhanced
metallics using advanced bottom-up synthesis and manufacturing approaches. Subawardee on ARPA-E METALS
‣ UMD is world leader in broad HEX technology. UMD has been collaborating with BR&T on development of AM
aircraft engine precoolers (>500C) under ARPA-E ARID
‣ ATI is a global manufacturer of technically advanced specialty materials and complex components
‣ Metalysis has developed a unique technology (originally based on the Cambridge FFC® process) capable of
producing a vast range of metals and complex alloy powder feedstock at low cost
‣ AFRL is a world leader in refractory complex concentrated alloy development and characterization
Fed. funding: $2.4M
Length 30 mo.
Team member Location Role in project
Boeing Research & Technology (BR&T) CAManage program and lead materials, manufacturing processes and
EEHX development; T2M planning & TEA for aerospace market
University of Maryland (UMD) MD Lead topology optimization, EEHX testing, T2M for power generation
ATI NC Lead traditional feedstock production/characterization and AM tasks
Metalysis UK Lead nontraditional feedstock production/characterization
Air Force Research Laboratory (AFRL) OH Lead alloy selection and support development/characterization
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Innovation, Objectives, Final Deliverable
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Advanced Manufacturing: AM, PM, Hybrid AM-PM, SPF, and Novel Solid State Joining