Fluid slosh studies. Volume 1: Study of slosh dynamics of fluid filled containers on threeaxis stabilized spacecraft
Abstract
The problems of the localization of fluid monopropellants in spacecraft tanks are documented. A mathematical formulation and an approximate solution of the cross section of the equilibrium shapes of the liquid surfaces is given. Sample calculations are performed on a tank of type TVSAT, and guidelines for propellant management devices are derived. In order to obtain mechanical analogs for the dynamic calculation of coupling between liquid motion and spacecraft motion, as input for the attitude control system, use of simplified models of liquid motion was considered. However, the low degree of accuracy because of necessary approximations, and the difficulty in estimating model accuracy, make comparison with experiment necessary. Experiment designs for low gravity tests are given.
 Publication:

Final Report Erno Raumfahrttechnik G.m.b.H. Bremen (Germany
 Pub Date:
 November 1984
 Bibcode:
 1984ergm.rept.....B
 Keywords:

 Analog Simulation;
 Dynamic Structural Analysis;
 Fuel Tanks;
 Liquid Sloshing;
 Spacecraft Stability;
 Three Axis Stabilization;
 Attitude Control;
 Fuel Control;
 Reduced Gravity;
 Rotating Fluids;
 Spacecraft Models;
 Fluid Mechanics and Heat Transfer