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Using Dispersed Modes During Model CorrelationUsing model dispersions as a starting point allows us to quickly adjust a model to reflect new test data: a) The analyst does a lot of work before the test to save time post-test. b) Creating 1000s of model dispersions to provide "coarse tuning," then use Attune to provide the "fine tuning." Successful model tuning on three structures: a) TAURUS. b) Ares I-X C) Cart (in backup charts). Mode weighting factors, matrix norm method, and XOR vs. MAC all play key roles in determining the BME. The BME process will be used on future tests: a) ISPE modal test (ongoing work). b) SLS modal test (mid 2018).
Document ID
20170001489
Acquisition Source
Marshall Space Flight Center
Document Type
Presentation
Authors
Stewart, Eric
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Hathcock, Megan
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
February 9, 2017
Publication Date
January 11, 2017
Subject Category
Launch Vehicles And Launch Operations
Computer Programming And Software
Report/Patent Number
M17-5781
Report Number: M17-5781
Meeting Information
Meeting: AIAA SciTech 2017 Forum and Exposition
Location: Grapevine, TX
Country: United States
Start Date: January 9, 2017
End Date: January 13, 2017
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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