Modeling and experiments of laser-induced ignition of nitramine propellants

S. J. Ritchie, Stefan Thynell, K. K. Kuof

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The objective of the work is to develop and experimentally verify a model for CO2 laser-induced ignition of nitramine-based propellants. The onedimensional model considers heat conduction in the condensed phase coupled to heat and mass transport with global chemical kinetics of a heterogeneous propellant in the gas-phase region. The highly nonlinear model was solved numerically. Experimentally, increases in heat flux (125 -375 W/cm2) lowered the ignition delay time but changes in pressure (200 -550 psia) had very little effect. This supports the assumption that RDX decomposition is primarily temperature controlled. These trends are correctly predicted by thc model. Predictions of ignition delay time fall within the experimental uncertainty. Sensitivities of the numerical solution to the material properties and kinetic rate constants are addrased.

Original languageEnglish (US)
Title of host publication31st Joint Propulsion Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9780000000002
StatePublished - Jan 1 1995
Event31st Joint Propulsion Conference and Exhibit, 1995 - San Diego, United States
Duration: Jul 10 1995Jul 12 1995

Publication series

Name31st Joint Propulsion Conference and Exhibit

Other

Other31st Joint Propulsion Conference and Exhibit, 1995
CountryUnited States
CitySan Diego
Period7/10/957/12/95

Fingerprint

Propellants
Ignition
Lasers
Time delay
Experiments
Heat conduction
Reaction kinetics
Heat flux
Rate constants
Materials properties
Mass transfer
Decomposition
Kinetics
Gases
Temperature

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Systems Engineering
  • Aerospace Engineering

Cite this

Ritchie, S. J., Thynell, S., & Kuof, K. K. (1995). Modeling and experiments of laser-induced ignition of nitramine propellants. In 31st Joint Propulsion Conference and Exhibit [AIAA 95-2862] (31st Joint Propulsion Conference and Exhibit). American Institute of Aeronautics and Astronautics Inc, AIAA.
Ritchie, S. J. ; Thynell, Stefan ; Kuof, K. K. / Modeling and experiments of laser-induced ignition of nitramine propellants. 31st Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, 1995. (31st Joint Propulsion Conference and Exhibit).
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Ritchie, SJ, Thynell, S & Kuof, KK 1995, Modeling and experiments of laser-induced ignition of nitramine propellants. in 31st Joint Propulsion Conference and Exhibit., AIAA 95-2862, 31st Joint Propulsion Conference and Exhibit, American Institute of Aeronautics and Astronautics Inc, AIAA, 31st Joint Propulsion Conference and Exhibit, 1995, San Diego, United States, 7/10/95.

Modeling and experiments of laser-induced ignition of nitramine propellants. / Ritchie, S. J.; Thynell, Stefan; Kuof, K. K.

31st Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, 1995. AIAA 95-2862 (31st Joint Propulsion Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The objective of the work is to develop and experimentally verify a model for CO2 laser-induced ignition of nitramine-based propellants. The onedimensional model considers heat conduction in the condensed phase coupled to heat and mass transport with global chemical kinetics of a heterogeneous propellant in the gas-phase region. The highly nonlinear model was solved numerically. Experimentally, increases in heat flux (125 -375 W/cm2) lowered the ignition delay time but changes in pressure (200 -550 psia) had very little effect. This supports the assumption that RDX decomposition is primarily temperature controlled. These trends are correctly predicted by thc model. Predictions of ignition delay time fall within the experimental uncertainty. Sensitivities of the numerical solution to the material properties and kinetic rate constants are addrased.

AB - The objective of the work is to develop and experimentally verify a model for CO2 laser-induced ignition of nitramine-based propellants. The onedimensional model considers heat conduction in the condensed phase coupled to heat and mass transport with global chemical kinetics of a heterogeneous propellant in the gas-phase region. The highly nonlinear model was solved numerically. Experimentally, increases in heat flux (125 -375 W/cm2) lowered the ignition delay time but changes in pressure (200 -550 psia) had very little effect. This supports the assumption that RDX decomposition is primarily temperature controlled. These trends are correctly predicted by thc model. Predictions of ignition delay time fall within the experimental uncertainty. Sensitivities of the numerical solution to the material properties and kinetic rate constants are addrased.

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Ritchie SJ, Thynell S, Kuof KK. Modeling and experiments of laser-induced ignition of nitramine propellants. In 31st Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA. 1995. AIAA 95-2862. (31st Joint Propulsion Conference and Exhibit).