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Experimental and theoretical investigation of fatigue life in reusable rocket thrust chambers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kasper, H. J. Pavli, A. J. Hannum, N. P. |
| Copyright Year | 1976 |
| Description | During a test program to investigate low-cycle thermal fatigue, 13 rocket combustion chambers were fabricated and cyclically test fired to failure. Six oxygen-free, high-conductivity (OFHC) copper and seven Amzirc chambers were tested. The failures in the OFHC copper chambers were not typical fatigue failures but are described as creep rupture enhanced by ratcheting. The coolant channels bulged toward the chamber centerline, resulting in progressive thinning of the wall during each cycle. The failures in the Amzirc alloy chambers were caused by low-cycle thermal fatigue. The zirconium in this alloy was not evenly distributed in the chamber materials. The life that was achieved was nominally the same as would have been predicted from OFHC copper isothermal test data. |
| File Size | 14810026 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760019182 |
| Archival Resource Key | ark:/13960/t3fz22f54 |
| Language | English |
| Publisher Date | 1976-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Fatigue Life Zirconium Thermal Cycling Tests Creep Rupture Strength Thrust Chambers Thermal Fatigue Combustion Chambers Copper Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
