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Prediction of propellant behavior in spinning flow of a space motorA model for 2-phase flow dynamics in a spinning spherical rocket motor, developed for the Ofeq satellite program, is based on the sectional approach to solution of the flow equations. An experimental model was built, to enable the motion of the aluminum/aluminum-oxide particles resulting from combustion within a solid-fuel motor to be simulated by injected paraffin droplets. The injected droplets included under-5 micrometer droplets which move with the gas stream and larger droplets, averaging 20 micrometer diameter, which simulate the motion of aluminum particles. The test chamber comprised a pair of cylindrical pyrex tubes with a sharp contraction in diameter, rotated at various speeds by a frequency-controllable motor. An optical system, based on a 5 W argon ion laser with a beam splitter and frequency shifter, mounted on a movable table, facilitated sectional measurements of the three velocity components and determination of size-velocity relationships. Preliminary results indicate that the effect of rotation on axial velocity is negligible, while its effect on tangential velocity approximates to solid-body rotation.
Document ID
19960009727
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gany, A.
(Technion - Israel Inst. of Tech. Haifa, Israel)
Levy, Y.
(Technion - Israel Inst. of Tech. Haifa, Israel)
Timnat, Y. M.
(Technion - Israel Inst. of Tech. Haifa, Israel)
Date Acquired
August 17, 2013
Publication Date
April 1, 1992
Publication Information
Publication: Proceedings of the Second International Workshop on Civilian Space Applications
Subject Category
Spacecraft Propulsion And Power
Accession Number
96N16893
Distribution Limits
Public
Copyright
Other

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