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Comprehensive structural dynamic analysis of the SSME/AT fuel pump first-stage turbine blade / A.M. Brown.
- Format:
- Book
- Government document
- Author/Creator:
- Brown, A. M., author.
- Series:
- NASA technical memorandum ; 1998-208594.
- NASA/TM ; 1998-208594
- Language:
- English
- Genre:
- Online resources.
- Physical Description:
- 1 online resource (v, 12 pages) : illustrations.
- Place of Publication:
- Marshall Space Flight Center, Alabama : National Aeronautics and Space Administration, Marshall Space Flight Center, August 1998.
- Summary:
- A detailed structural dynamic analysis of the Pratt and Whitney high-pressure fuel pump first-stage turbine blades has been performed to identify the cause of the tip cracking found in the turbomachinery in November 1997. The analysis was also used to help evaluate potential fixes for the problem. Many of the methods available in structural dynamics were applied, including modal displacement and stress analysis, frequency and transient response to tip loading from the first-stage blade outer gas seals (BOGS), fourier analysis, and shock spectra analysis of the transient response. The primary findings were that the BOGS tip loading is impulsive in nature, thereby exciting many modes of the blade that exhibit high stress at the tip cracking location. Therefore, a proposed BOGS count change would not help the situation because a clearly identifiable resonance situation does not exist. The recommendations for the resolution of the problem are to maintain the existing BOGS count, eliminate the stress concentration in the blade due to its geometric design, and reduce the applied load on the blade by adding shiplaps in the BOG
- Notes:
- "August 1998."
- "Performing organization: George C. Marshall Space Flight Center"--Report documentation page.
- Includes bibliographical references (page 12).
- Description based on online resource; title from PDF title page (NASA, viewed Aug. 7, 2017).
- No Copyright
- Unclassified
- Publicly Available
- Unlimited
- Other Format:
- Print version: Comprehensive Structural Dynamic Analysis Of The SSME/AT Fuel Pump First-Stage Trubine Blade
- Microfiche version: Brown, A. M. Comprehensive structural dynamic analysis of the SSME/AT fuel pump first-stage turbine blade
- OCLC:
- 703645404
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