국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Validation of Slosh Model Parameters and Anti-Slosh Baffle Designs of Propellant Tanks by Using Lateral Slosh Testing
저자	Perez, Jose G.;; Parks, Russel, A.;; Lazor, Daniel R.
Keyword	BAFFLES;; DAMPING;; EXTRACTION;; FREQUENCIES;; LIQUID SLOSHING;; PENDULUMS;; POSITION (LOCATION); PROPELLANT TANKS
URL	http://hdl.handle.net/2060/20130000590
보고서번호	M12-1999
발행년도	2012
출처	NTRS (NASA Technical Report Server)
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.