Structurally compliant rocket engine combustion chamber: Experimental and analytical validation
Abstract
A new, structurally compliant rocket engine combustion chamber design has been validated through analysis and experiment. Subscale, tubular channel chambers have been cyclically tested and analytically evaluated. Cyclic lives were determined to have a potential for 1000 percent increase over those of rectangular channel designs, the current state of the art. Greater structural compliance in the circumferential direction gave rise to lower thermal strains during hot firing, resulting in lower thermal strain ratcheting and longer predicted fatigue lives. Thermal, structural, and durability analyses of the combustion chamber design, involving cyclic temperatures, strains, and low-cycle fatigue lives, have corroborated the experimental observations.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1994
- Bibcode:
- 1994STIN...9434392J
- Keywords:
-
- Combustion Chambers;
- Durability;
- Rocket Engine Design;
- Rocket Engines;
- Structural Strain;
- Thermal Fatigue;
- Elastic Properties;
- Engine Parts;
- Strain Distribution;
- Stress Distribution;
- Temperature Distribution;
- Thermodynamic Cycles;
- Spacecraft Propulsion and Power