• Title/Summary/Keyword: 슬로시

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Estimation of Slosh Model Parameters Using Experimental Test-bed (시험 장치를 이용한 슬로시 모델 파라미터 추정)

  • Oh, Choong-Seok;Sun, Byung-Chan;Park, Yong-Kyu;Roh, Woong-Rae
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.37 no.7
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    • pp.661-668
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    • 2009
  • The slosh natural frequencies, damping ratio, slosh mass and slosh force applying point of the liquid in cylindrical tank are estimated using the nonlinear least squares method in time domain. The estimated slosh model parameters are in good agreement with the results of the theoretical calculations for various liquid depths. Furthermore, this methodology will be applied to predict the sloshing parameters for a liquid propellant tank using ground experimental test-bed.

Modeling and SPM Analysis of Fuel Slosh in a Rocket-Thrusting Vehicle (로켓비행체의 액체연료슬로시 모델링 및 SPM을 이용한해석)

  • Kang, J.Y.
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.13 no.3
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    • pp.34-42
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    • 2005
  • The objectives of the study are to present simple physical and mathematical models of liquid fuel in the tank of an aerospace vehicle such launch vehicle or missile and to investigate its dynamic stability for a parameter space. In this paper, liquid in the container is modeled as multi-mass system subject to parametric excitations, and a stability diagram for determination of stable-unstable regions of the motion is obtained by using an analytical method. Also, computer simulations are conducted at various parameter points to verify the analytical results, and time histories of motion are compared to explain the effect of variation of parameters of the system.

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