Physics-Based Lifing Analysis of Rotating Detonation Thrust Chambers
Abstract
This proposed research will analyze deformation and damage behaviors in regeneratively cooled RDRE thrust chambers, considering physically representative thermal and mechanical stresses during startup, shutdown, and steady-state operation. The analysis will account for key chemical degradation processes (oxidation, blanching) and mechanical deformation phenomena (strain ratcheting, low cycle fatigue, high cycle fatigue, creep) to determine how different candidate materials respond to ultrasonic frequency detonative loading. Specific combustor materials that will be considered include- OFHC, GRCop-42, IN718 (with and without a thermal barrier coating), Nb C103, and C-SiC composites. The analysis will assume RP2-GOX propellants, but other propellant combinations can be considered as well. The resulting knowledge outcomes and computational framework for predicting the service life of an RDRE combustor under multiple hot fires and a range of operating conditions. They can also be used to assess the effects of different combustor and cooling channel architectures (e.g., pin fins v. cooling channels) and combustor materials on longevity.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 14, 2024
- Source ID
- FA95502310761
Entities
People
- Zachary C. Cordero
Organizations
- Air Force Office of Scientific Research
- Massachusetts Institute of Technology
- United States Air Force