Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid

S. Q. Wang, Stefan Thynell

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

Abstract

A drop-on-pool impingement setup, coupled with a high-speed camera, was used to investigate the ignition delay of several hydrazine-, amine- and azide-based fuels, including monomethylhydrazine (MMH), 1,1-dimethylhydrazine (UDMH), tetramethylethylenediamine (TMEDA) and 2-dimethylaminoethylazide (DMAZ), with white fuming nitric acid (WFNA) as the oxidizer. The drop-on-pool impingement experiments were conducted in an N2 purged chamber with pressures ranging from -40 kPa to 600 kPa (gauge). In general, the ignition delay of hydrazines (MMH and UDMH) decreases with increasing pressure, whereas the ignition delay of TMEDA and DMAZ increases with increasing pressure. In addition to the pressure effect, the ignition delay of MMH/WFNA is also significantly affected by the type of droplet-pool interaction. The droplet stays within the pool after impingement at sub-atmospheric pressures (type I), while the droplet is ejected from the pool at elevated pressures (type II). The critical pressure is about 0 kPa (g) at which either interaction type was observed. The ignition delay of type I interaction is much longer than that of type II at that pressure. The ignition delay of a mixture of 33.3% DMAZ and 66.7% TMEDA was also studied. This mixture has a shorter ignition delay than both pure TMEDA and DMAZ. In addition, the pressure effect on the ignition delay of this mixture is not significant.

Original languageEnglish (US)
Title of host publication8th US National Combustion Meeting 2013
PublisherWestern States Section/Combustion Institute
Pages2720-2725
Number of pages6
ISBN (Electronic)9781627488426
StatePublished - Jan 1 2013
Event8th US National Combustion Meeting 2013 - Park City, United States
Duration: May 19 2013May 22 2013

Publication series

Name8th US National Combustion Meeting 2013
Volume3

Other

Other8th US National Combustion Meeting 2013
CountryUnited States
CityPark City
Period5/19/135/22/13

Fingerprint

Monomethylhydrazine
monomethylhydrazines
dimethylhydrazines
Nitric Acid
Pressure effects
nitric acid
pressure effects
Nitric acid
ignition
Ignition
impingement
hydrazine
Hydrazine
hydrazines
Hydrazines
oxidizers
Azides
critical pressure
N,N,N',N'-tetramethylethylenediamine
dimazine

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Wang, S. Q., & Thynell, S. (2013). Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid. In 8th US National Combustion Meeting 2013 (pp. 2720-2725). (8th US National Combustion Meeting 2013; Vol. 3). Western States Section/Combustion Institute.
Wang, S. Q. ; Thynell, Stefan. / Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid. 8th US National Combustion Meeting 2013. Western States Section/Combustion Institute, 2013. pp. 2720-2725 (8th US National Combustion Meeting 2013).
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title = "Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid",
abstract = "A drop-on-pool impingement setup, coupled with a high-speed camera, was used to investigate the ignition delay of several hydrazine-, amine- and azide-based fuels, including monomethylhydrazine (MMH), 1,1-dimethylhydrazine (UDMH), tetramethylethylenediamine (TMEDA) and 2-dimethylaminoethylazide (DMAZ), with white fuming nitric acid (WFNA) as the oxidizer. The drop-on-pool impingement experiments were conducted in an N2 purged chamber with pressures ranging from -40 kPa to 600 kPa (gauge). In general, the ignition delay of hydrazines (MMH and UDMH) decreases with increasing pressure, whereas the ignition delay of TMEDA and DMAZ increases with increasing pressure. In addition to the pressure effect, the ignition delay of MMH/WFNA is also significantly affected by the type of droplet-pool interaction. The droplet stays within the pool after impingement at sub-atmospheric pressures (type I), while the droplet is ejected from the pool at elevated pressures (type II). The critical pressure is about 0 kPa (g) at which either interaction type was observed. The ignition delay of type I interaction is much longer than that of type II at that pressure. The ignition delay of a mixture of 33.3{\%} DMAZ and 66.7{\%} TMEDA was also studied. This mixture has a shorter ignition delay than both pure TMEDA and DMAZ. In addition, the pressure effect on the ignition delay of this mixture is not significant.",
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Wang, SQ & Thynell, S 2013, Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid. in 8th US National Combustion Meeting 2013. 8th US National Combustion Meeting 2013, vol. 3, Western States Section/Combustion Institute, pp. 2720-2725, 8th US National Combustion Meeting 2013, Park City, United States, 5/19/13.

Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid. / Wang, S. Q.; Thynell, Stefan.

8th US National Combustion Meeting 2013. Western States Section/Combustion Institute, 2013. p. 2720-2725 (8th US National Combustion Meeting 2013; Vol. 3).

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

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N2 - A drop-on-pool impingement setup, coupled with a high-speed camera, was used to investigate the ignition delay of several hydrazine-, amine- and azide-based fuels, including monomethylhydrazine (MMH), 1,1-dimethylhydrazine (UDMH), tetramethylethylenediamine (TMEDA) and 2-dimethylaminoethylazide (DMAZ), with white fuming nitric acid (WFNA) as the oxidizer. The drop-on-pool impingement experiments were conducted in an N2 purged chamber with pressures ranging from -40 kPa to 600 kPa (gauge). In general, the ignition delay of hydrazines (MMH and UDMH) decreases with increasing pressure, whereas the ignition delay of TMEDA and DMAZ increases with increasing pressure. In addition to the pressure effect, the ignition delay of MMH/WFNA is also significantly affected by the type of droplet-pool interaction. The droplet stays within the pool after impingement at sub-atmospheric pressures (type I), while the droplet is ejected from the pool at elevated pressures (type II). The critical pressure is about 0 kPa (g) at which either interaction type was observed. The ignition delay of type I interaction is much longer than that of type II at that pressure. The ignition delay of a mixture of 33.3% DMAZ and 66.7% TMEDA was also studied. This mixture has a shorter ignition delay than both pure TMEDA and DMAZ. In addition, the pressure effect on the ignition delay of this mixture is not significant.

AB - A drop-on-pool impingement setup, coupled with a high-speed camera, was used to investigate the ignition delay of several hydrazine-, amine- and azide-based fuels, including monomethylhydrazine (MMH), 1,1-dimethylhydrazine (UDMH), tetramethylethylenediamine (TMEDA) and 2-dimethylaminoethylazide (DMAZ), with white fuming nitric acid (WFNA) as the oxidizer. The drop-on-pool impingement experiments were conducted in an N2 purged chamber with pressures ranging from -40 kPa to 600 kPa (gauge). In general, the ignition delay of hydrazines (MMH and UDMH) decreases with increasing pressure, whereas the ignition delay of TMEDA and DMAZ increases with increasing pressure. In addition to the pressure effect, the ignition delay of MMH/WFNA is also significantly affected by the type of droplet-pool interaction. The droplet stays within the pool after impingement at sub-atmospheric pressures (type I), while the droplet is ejected from the pool at elevated pressures (type II). The critical pressure is about 0 kPa (g) at which either interaction type was observed. The ignition delay of type I interaction is much longer than that of type II at that pressure. The ignition delay of a mixture of 33.3% DMAZ and 66.7% TMEDA was also studied. This mixture has a shorter ignition delay than both pure TMEDA and DMAZ. In addition, the pressure effect on the ignition delay of this mixture is not significant.

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Wang SQ, Thynell S. Experimental investigation of pressure effect on ignition delay of monomethylhydrazine, 1,1-dimethylhydrazine, tetramethylethylenediamine and 2-dimethylaminoethylazide with nitric acid. In 8th US National Combustion Meeting 2013. Western States Section/Combustion Institute. 2013. p. 2720-2725. (8th US National Combustion Meeting 2013).