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Leak rate quantification method for gas pressure seals with controlled pressure differential
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Daniels, Christopher C. Braun, Minel J. Oravec, Heather A. Mather, Janice L. Taylor, Shawn C. |
| Copyright Year | 2015 |
| Description | An enhancement to the pressure decay leak rate method with mass point analysis solved deficiencies in the standard method. By adding a control system, a constant gas pressure differential across the test article was maintained. As a result, the desired pressure condition was met at the onset of the test, and the mass leak rate and measurement uncertainty were computed in real-time. The data acquisition and control system were programmed to automatically stop when specified criteria were met. Typically, the test was stopped when a specified level of measurement uncertainty was attained. Using silicone O-ring test articles, the new method was compared with the standard method that permitted the downstream pressure to be non-constant atmospheric pressure. The two methods recorded comparable leak rates, but the new method recorded leak rates with significantly lower measurement uncertainty, statistical variance, and test duration. Utilizing this new method in leak rate quantification, projects will reduce cost and schedule, improve test results, and ease interpretation between data sets. |
| File Size | 396888 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150022419 |
| Archival Resource Key | ark:/13960/t38103k5q |
| Language | English |
| Publisher Date | 2015-07-27 |
| Access Restriction | Open |
| Subject Keyword | Seal Leakage Seals Stoppers Atmospheric Pressure O Ring Seals Cost Reduction Gas Pressure Statistical Tests Decay Rates Real Time Operation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
