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The 3rd notification of the 14th conference on Explosion Mechanics Notification of the 14th conference on Explosion Mechanics (supplement) Contributions wanted for the special issue: the Propagation of Waves Explosion and Shock Waves is in the 6th edition of the list of S&T Journals of China List of awrard by Explosion and Shock Waves in 2022 Notification of the 14th conference on Explosion Mechanics
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Volume 30 Issue 6
May  2014
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Article Navigation >  Explosion And Shock Waves  > 2010  >  30(6): 658-663
ZHANG Ling-ke, ZHOU Yan-huang, YU Yong-gang, LU Xin, LIU Dong-yao. Effectsofencroachmentanddesquamationofignitionjetoncombustionpropertyofbasebleedpropellant[J]. Explosion And Shock Waves, 2010, 30(6): 658-663. doi: 10.11883/1001-1455(2010)06-0658-06
Citation: ZHANG Ling-ke, ZHOU Yan-huang, YU Yong-gang, LU Xin, LIU Dong-yao. Effectsofencroachmentanddesquamationofignitionjet oncombustionpropertyofbasebleedpropellant[J]. Explosion And Shock Waves, 2010, 30(6): 658-663. doi: 10.11883/1001-1455(2010)06-0658-06
shu

Effectsofencroachmentanddesquamationofignitionjet oncombustionpropertyofbasebleedpropellant

doi: 10.11883/1001-1455(2010)06-0658-06
  • 1.

    PowerEngineeringCollege,NanjingUniversityofScienceandTechnology,

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  • Corresponding author: ZHANG Ling-ke
  • Publish Date: 2010-11-25
    Abstract
  • Toinvestigatethecaseoffragmentsdroppingandcombustionpropertychangingofbase bleedpropellantgrainresultingfromtheeffectofencroachmentanddesquamationcausedbythejetof ignition,thesemi-closedbombwasusedtosimulatethestageofrapiddepressurizationafterbase bleedprojectileflightoutofthenozzle.Theserialimagesofignitionandcombustionofbasebleed propellantgrainwererecordedbymeansofhighspeedvideosystem.Themathematicmodelofcombustionofbasebleedpropellantinthesemi- closedbombwasbuilt.Thechangesofaveragepressure, massflowrateandcombustiontimefordifferentqualityoftotalfragmentswerecalculatedandanalyzed. Thestudyresultsareasfollows:Thephenomenonofencroachmentanddesquamationhappen atinitialstagesofignition;Thefragmentsaredesquamatedfromthepartofbasebleedpropellant grainnotbeingignited;Theeffectofencroachmentanddesquamationiscausedbytheencroachment andimpactofignitionjet;Themassofallfragmentsis(7-9)percentoftheinitialmassofthebase bleedpropellant;Theactionofencroachmentanddesquamationaffectsseriouslytheconsistenciesof ignitionofigniterandcombustionofbasebleedpropellantgrain.Thecalculationresultsagreewell withtheexperimentalresults.
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