Dr. Perrella is a mechanical engineer specializing in heat transfer, fluid mechanics, and cryogenic refrigeration. He has applied his expertise to solve complex mechanical problems for the aerospace and defense industries involving the design, testing, and production of cryogenic cooling devices, linear electric motors, and thermal management systems. His experience with the development and manufacture of defense articles for prime contractors spans conceptual design, detailed design, material procurement, production readiness assessment, and verification testing. Dr. Perrella is proficient at troubleshooting Stirling cryocoolers and similar devices and possesses hands-own experience with performance and reliability testing, root-cause analysis, and failure analysis due to material defects, vendor defects, and workmanship. He is conversant in measurement uncertainty and repeatability, geometric dimensions and tolerancing, machining best practices, and evaluating components against various MIL-STD and ASME specifications.
Before joining Exponent, Dr. Perrella worked as a cryocooler engineer who was responsible for the design and sustainment of multiple tactical cryocooler product lines and was intimately involved in all stages of the manufacturing process. His doctoral research involved the development of hydrodynamic resistance parameters for oscillating fluid flow through the porous media of cryocooler regenerators at cryogenic temperatures and the theoretical modeling of novel pulse-tube cryocooler concepts for space applications. He has expertise in the detailed modeling of complex thermal and fluid systems incorporating multi-mode heat transfer, buoyancy effects, pipe flow, and porous media hydrodynamics. Dr. Perrella is well-versed in the design and execution of experiments as well as data mining and analysis and is proficient with multiple CFD modeling and data acquisition tools.
CREDENTIALS & PROFESSIONAL HONORS
- Ph.D., Mechanical Engineering, Georgia Institute of Technology (Georgia Tech), 2017
- M.S., Mechanical Engineering, Georgia Institute of Technology (Georgia Tech), 2015
- B.S., Mechanical Engineering, Auburn University, 2012
Periodic Flow Hydrodynamic Resistance Parameters for ErPr Rare-Earth Regenerator Material at Cryogenic Temperatures, CEC, 2015
Periodic Flow Hydrodynamic Resistance Parameters for Multiple Regenerator Filler Materials at Cryogenic Temperatures, ICC 19, 2016
Development of a miniature Stirling cryocooler for LWIR small satellite applications, TTDR II, 2017
Cryocooler Engineer Specialist, L3Harris | Space & Sensors, 2017-2019
Graduate Research/ Teaching Assistant, Georgia Institute of Technology, 2012-2017
Mechanical Engineering Intern, Raytheon Space and Airborne Systems, 2016
Quality Control/ Design Engineer, Focus Engineering, 2012
Intern, Naval Surface Warfare Center, 2011
Co-op, VT Miltope, 2008-2010