Compression-Ignition Sensitivity Studies of Liquid Propellants for Guns

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Abstract:

The objective of the study reported herein was to provide a means of establishing the sensitivity of candidate liquid monopropellants to compression-ignition at pressure levels and pressurization rates comparable to those of liquid propellant gun LPG systems, particularly during the start-up phase of the ballistic cycle. Experimental testing with a specially designed compression- ignition sensitivity apparatus was performed to delineate the safe operational domain for NOS-365 liquid monopropellant with respect to the hazard associated with compression-ignition of collapsing bubbles in the liquid charge and ensuing runaway reaction. It is the purpose of this study to define the threshold conditions required to initiate runaway reaction, in the presence of finely distributed ullage. Furthermore, the theory for the mechanism of ignition of liquid monopropellants by rapid compression is advanced by examining the assumptions and limitations of previous works.Author

Author(s):
Messina, Neale A. ; Ingram, Larry S. ; Camp, Preston E. ; Benreuven, Moshe ; Summerfield, Martin
Author Organization(s):
PRINCETON COMBUSTION RESEARCH LABS INCMONMOUTH JUNCTION NJ
Descriptive Note:
Final rept. 24 Aug 78-14 Jul 79
Pagination:
0153

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PCRL-FR-79-004
Contract/Grant Number(s):
DAAK10-78-C-0315
Monitor Series:
ARDC*
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_5.3_Planning; JCA_6.1.3_Switching and Routing; JCA_5.6.3_Assess Achievement of Objectives; JCA_5.6_Monitor; JCA_6.1_Information Transport; JCA_6_Net Centric; JCA_1_Force Support; JCA_1.2.5_Lessons Learned; JCA_1.3_Human Capital Management; JCA_1.2.7_Experimentation; JCA_1.3.2_Personnel Management; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support
Modernization Areas:
Microelectronics
Communities of Interest:
Weapons Technologies
Descriptor(s):
*SENSITIVITY, *LIQUID GUN PROPELLANTS, *COMPRESSION IGNITION, MATHEMATICAL MODELS, GUN BARRELS, THRESHOLD EFFECTS, EXPLOSIONS, GUNS, DETONATIONS, INTERIOR BALLISTICS, MONOPROPELLANTS
Field(s)/Group(s):
Ammunition and Explosives, Ballistics, Combustion and Ignition
Keyword(s):
N03 365 liquid monopropellant, Liquid propellant guns
Report Date:
1979 Jul 01