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Show Experlm.eatation (Tbiokol_9 'f-35) pF'opellant oommercial if the begun by firings 'was burner 'Would pr-ope Ll.ant , had exhibited in the tests, approx1naat,ely thirty firings made /J the was removal of a short transducer to 2 inches ment mean before to succe ss ruf of the chambez-. chamber pressure only.. Oscillatory burning tubing an was firings '.Ph.is was irregularit1es upon a 'tub1n.g,1t fiJled measure oscillatory adjacent flush mounted observed immediately aft:er ex.perience demonstrated the effects geome trr-Lea.I The removed ana the mounting hole was were length of tubi.ng used to connect burning was'to be measured by the of sealedQ seemingly acoustic This minor properties of the cav1tyo gas 'Fir1.ngs for the Tere then made to of seleoting a purpose systematc studyq were no made eDd burner dampen chamber oscillations and allow to the previous long and one-fourth inch 1,1:'1 diameter, with grease p.Lckup, w'ere leadi.ng end fla:n,ge of the the AltrJ.()ugh thi,g Several minor procedural changes the major modi,fication but determine perchlol'llate-,polysulfide composite" oscillatory bUJfn1ng oscillations appearedo short. grains of in order to pr-oduo e osc1l1ationo aJTJ.rJ9,o;nium an of trl'ed test basic different propellants composition Approximately 30 composition for variations Many of these had low burning rates and exhibit-ed oscillati.ons at a I L, It was only after fast burning rates |