P3 Technologies specializes in propulsion, pumps, and power. We are experts in research, development, design, and analysis of existing, advanced, and emerging propulsion systems including liquid propellant rocket engines of all cycles and propellants.


Based in Jupiter, Florida, P3 Technologies is an industry leader in development of state-of-the-art rotating machinery including pumps, compressors, turbines, rolling element bearings, hydrostatic bearings, fluid-film seals, and rotordynamics. We are specialists in extremely high-speed rotors and cryogenic pumps including rocket engine turbopumps.


P3 Technologies has a comprehensive team of highly skilled gas-turbine engineers experienced in developing the highest performing commercial and military turbine engines using advanced physics-based aero design, fluid dynamics, and conjugate heat transfer tools.


Our experience and development approach results in innovative solutions to the most complex technical challenges resulting in high performing, robust, and cost-effective solutions. Our focus on customer satisfaction ensures you are a fully-informed, integral member of a seamless team.

Philip C. Pelfrey, P.E.
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Philip C. Pelfrey - President

Philip Pelfrey has been developing advanced propulsion systems for more than 30 years.  He started his career in 1987 developing replacement turbopumps for the Space Shuttle Main Engine (SSME) as part of a NASA effort to increase overall launch system reliability following the Challenger accident.  Those turbopumps demonstrated 120 mission cycle life in order to be certified for 55 launches.  30 years later, the SSME (now called the RS-25) will be used on NASA’s new Space Launch System (SLS) for deep space exploration (shown in the video on the Home page).  Over his 30-year career, he has worked on virtually every rocket engine cycle and propellant combination, including developing new engine cycles and using novel propellants.

During this same period, he has helped to develop some of the most advanced commercial and military turbine engine technology including XTC/XTE-67, PW5000, F119 (powering the F-22 Raptor), F135 (powering the Joint Strike Fighter, JSF F-35 Lightning II), Trent, FTA-37F, and FTC/FTF-250C/F.  His innovation has resulted in more than a dozen patents and 30 publications.

With physics-based design and analysis tools and a comprehensive, validated development process, he started P3 Technologies to offer affordable, state-of-the-art propulsion technology and services to the U.S. Government, its contractors, and commercial companies.