Record Details

Record 1 of 1
Validation of Slosh Model Parameters and Anti-Slosh Baffle Designs of Propellant Tanks by Using Lateral Slosh Testing
NTRS Full-Text: Click to View  [PDF Size: 899 KB]
Author and Affiliation:
Perez, Jose G.(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Parks, Russel, A.(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Lazor, Daniel R.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Abstract: The slosh dynamics of propellant tanks can be represented by an equivalent mass-pendulum-dashpot mechanical model. The parameters of this equivalent model, identified as slosh mechanical model parameters, are slosh frequency, slosh mass, and pendulum hinge point location. They can be obtained by both analysis and testing for discrete fill levels. Anti-slosh baffles are usually needed in propellant tanks to control the movement of the fluid inside the tank. Lateral slosh testing, involving both random excitation testing and free-decay testing, are performed to validate the slosh mechanical model parameters and the damping added to the fluid by the anti-slosh baffles. Traditional modal analysis procedures were used to extract the parameters from the experimental data. Test setup of sub-scale tanks will be described. A comparison between experimental results and analysis will be presented.
Publication Date: Oct 16, 2012
Document ID:
20130000590
(Acquired Jan 09, 2013)
Subject Category: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
Report/Patent Number: M12-1999
Document Type: Conference Paper
Publication Information: (SEE 20120015663)
Meeting Information: 28th Aerospace Testing Seminar; 16-18 Oct. 2012; Los Angeles, CA; United States
Meeting Sponsor: Aerospace Corp.; United States
Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 39p; In English; Original contains color and black and white illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: LIQUID SLOSHING; PROPELLANT TANKS; PENDULUMS; DAMPING; EXTRACTION; BAFFLES; POSITION (LOCATION); FREQUENCIES
› Back to Top
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed
Find Similar Records
 
NASA Logo, External Link

NASA Official: Gerald Steeman
Sponsored By: NASA Scientific and Technical Information Program
Site Curator: STI Support Services
Last Modified: April 09, 2013

Privacy Policy & Important Notices Disclaimers, Copyright, Terms of Use Freedom of Information Act USA.gov NASA.gov NASA OCIO Free Adobe PDF Reader Free MS Word Viewer