Cookoff of Black Powder and Smokeless Powder
Abstract
We have completed a series of both vented and sealed cookoff experiments of black powder and smokeless powder in our Sandia Instrumented Thermal Ignition (SITI) apparatus at bulk densities of 1078 and 729 kg/m3, respectively. The confining aluminum cylinder was ramped from room temperature to a set point temperature and then held at the setpoint temperature until ignition. The setpoint temperatures varied between 495 to 523 K for the black powder and 401 to 412 K for the more sensitive smokeless powder. The vented experiments show a significant delay in thermal ignition, indicating that the ignition is dependent on pressure. Post experimental debris shows greater violence for our smokeless powder experiments than our black powder experiments. A simplified universal cookoff model (UCM) was calibrated using the black powder and smokeless powder SITI data and used to predict pressurization and thermal ignition. The current work presents the first calibration of the UCM with a double base propellant. Finally, this work also presents the first pressure-dependent cookoff model for black powder and smokeless powder.
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1784620
- Report Number(s):
- SAND-2021-6006J
Journal ID: ISSN 0721-3115; 696264
- Grant/Contract Number:
- AC04-94AL85000; NA0003525
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Propellants, Explosives, Pyrotechnics
- Additional Journal Information:
- Journal Volume: 46; Journal Issue: 3; Journal ID: ISSN 0721-3115
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; cookoff; thermal ignition; black powder; smokeless powder; double base propellent; Bullseye®
Citation Formats
Hobbs, Michael L., and Kaneshige, Michael J. Cookoff of Black Powder and Smokeless Powder. United States: N. p., 2021.
Web. doi:10.1002/prep.202000214.
Hobbs, Michael L., & Kaneshige, Michael J. Cookoff of Black Powder and Smokeless Powder. United States. https://doi.org/10.1002/prep.202000214
Hobbs, Michael L., and Kaneshige, Michael J. Thu .
"Cookoff of Black Powder and Smokeless Powder". United States. https://doi.org/10.1002/prep.202000214. https://www.osti.gov/servlets/purl/1784620.
@article{osti_1784620,
title = {Cookoff of Black Powder and Smokeless Powder},
author = {Hobbs, Michael L. and Kaneshige, Michael J.},
abstractNote = {We have completed a series of both vented and sealed cookoff experiments of black powder and smokeless powder in our Sandia Instrumented Thermal Ignition (SITI) apparatus at bulk densities of 1078 and 729 kg/m3, respectively. The confining aluminum cylinder was ramped from room temperature to a set point temperature and then held at the setpoint temperature until ignition. The setpoint temperatures varied between 495 to 523 K for the black powder and 401 to 412 K for the more sensitive smokeless powder. The vented experiments show a significant delay in thermal ignition, indicating that the ignition is dependent on pressure. Post experimental debris shows greater violence for our smokeless powder experiments than our black powder experiments. A simplified universal cookoff model (UCM) was calibrated using the black powder and smokeless powder SITI data and used to predict pressurization and thermal ignition. The current work presents the first calibration of the UCM with a double base propellant. Finally, this work also presents the first pressure-dependent cookoff model for black powder and smokeless powder.},
doi = {10.1002/prep.202000214},
journal = {Propellants, Explosives, Pyrotechnics},
number = 3,
volume = 46,
place = {United States},
year = {Thu Jan 28 00:00:00 EST 2021},
month = {Thu Jan 28 00:00:00 EST 2021}
}
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