Mondaloy
Nickel-based superalloy family (Mondaloy 100, Mondaloy 200) engineered for oxygen-rich staged combustion environments. Co-invented by Monica Jacinto Reza and Dallis Hardwick (AFRL Materials Directorate). ITAR-controlled; composition now proprietary to L3Harris following the 2023 Aerojet Rocketdyne acquisition. Used in 12 components of the AR1 engine and the USAF Hydrocarbon Boost Technology Demonstrator.
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Content
Mondaloy
Mondaloy is a family of nickel-based superalloys (Mondaloy 100, Mondaloy 200) engineered for oxygen-rich staged combustion (ORSC) environments — the most thermally and chemically hostile conditions in rocket propulsion. It was co-invented by Monica Jacinto Reza and Dallis Hardwick (AFRL Materials Directorate, Rockwell Science Center) under US Patent 2010/0266442 A1, "Burn-Resistant and High Tensile Strength Metal Alloys," filed 2001.
Applications
- AR1 engine: 12 components made from Mondaloy — preburner, turbine rotor, turbine housing, ducts, and hot gas manifolds. The AR1 is the congressional-mandate U.S. replacement for Russia's RD-180.
- USAF Hydrocarbon Boost Technology Demonstrator: 250,000 lbf reusable engine program.
Classification and Ownership
Mondaloy is governed by ITAR (International Traffic in Arms Regulations). Specific composition data became proprietary to L3Harris following the $4.7B acquisition of Aerojet Rocketdyne in July 2023. Most detailed technical papers were published through JANNAF and require U.S. citizenship and need-to-know clearance.
The complete knowledge chain — co-inventor Hardwick (died January 5, 2014), co-inventor Reza (missing since June 22, 2025), and AFRL Commander William Neil McCasland who authorized the programs it went into (missing since February 27, 2026) — is either dead or missing.
Mentions
Named in the text but not recorded as a relationship, so these do not count as connections or appear in the network.