Star Grain Regression Analysis under Spin Effect and Chamber Pressure Effect

Theangularaccelerationduetothespineffectincreasestheburningrateofsolidpropellantandchangesthemotorperformancebyincreasingtheoperatingpressureanddecreasingtheburningtime.Soitisimportanttoknowthegrainregressiontakenplaceinthesolidpropellantrocketmotorintheaccelerationfield.Thisstudyrepresentsthegrainregressionanalysisoftwo-dimensionalaxis-symmetricstargrainconfigurationofthesolidpropellantrocketmotorwithspininducedaccelerationeffectandpressureeffectonburnrateusinggeometricalandnumericalanalysis.Whiletherocketisspinning,theburnratesoneachpointofthepropellantsurfacearedifferentwithitsradialdistance,accelerationvectorangleandsurfaceslope.Withthedifferentburnratesonthepropellantsurface,weanalyzethepropellantsurfaceperimeterandportarea,andtheseresultsarecomparedwiththoseofconstantburnrateandburnrateaffectedbythechamberpressure.