The Effect of Some Amines on Ignition Delay Time of Dimethyl Amino Ethyl Azide (DMAZ) and White Fuming Nitric Acid (WFNA)

Pakdehi, Shahram Ghanbari; Shirzadi, Bahman

doi:10.1002/prep.201700208

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…The ignition delay of DMAZ was approximately 26 ms. When 33.3% DMAZ and 66.7% TMEDA were added into the fuel mixture, the ignition delay could be adjusted to 9 ms. 19 Pakdehi 20 carried out a dripping experiment under environmental pressure and temperature with the aid of a high-speed camera to add several amines as compounding agents to DMAZ and measured the ignition delay time between them and white fuming NA (WFNA). The results showed that adding pyrrole, tert-butylamine, and octylamine to DMAZ significantly shortened the ignition delay of DMAZ and WFNA.…”

Section: Introductionmentioning

confidence: 99%

Reactive Molecular Dynamics Calculation and Ignition Delay Test of the Mixture of an Additive and 2-Azido-N,N-dimethylethanamine with Dinitrogen Tetroxide

et al. 2022

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In order to shorten the ignition delay of 2-azido- N , N -dimethylethanamine (DMAZ) and dinitrogen tetroxide (NTO), four amines [ tert -butylamine, pyrrole, N , N , N ′, N ′-tetramethyl ethylenediamine (TMEDA), and diethylenetriamine (DABH)] with a mass fraction of 5% were added to DMAZ, and the potential energy change and the product change during the reaction of the mixture of an additive and DMAZ with NTO were analyzed by Reactive molecular dynamics (ReaxFF MD) calculation. Then, the ignition delay of the mixture of the additive and DMAZ as well as pure DMAZ with NTO was measured by a drop experiment with a photoelectric sensor and high-speed camera. The results show that the addition of pyrrole greatly reduced the time to reach the maximum system energy and greatly increased the rate of HNO 2 formation. The dripping of the fuel was approximately a uniform linear motion, and the expression was y = 43.13 + 7.16 x . The ignition delay time recorded by the camera was in good agreement with that of the optical signal. The measured ignition delay time for DMAZ with NTO was 261.5 ms. The mixture of pyrrole and DMAZ with NTO had the shortest ignition delay time of 100 ms, and the proportion of shortening the ignition delay time was the largest. The results of the droplet experiment were consistent with those of ReaxFF MD simulation, indicating that HNO 2 plays an important role in the ignition delay, that is, the formation rate of HNO 2 is positively correlated with the ignition delay.

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Section: Introductionmentioning

confidence: 99%

Reactive Molecular Dynamics Calculation and Ignition Delay Test of the Mixture of an Additive and 2-Azido-N,N-dimethylethanamine with Dinitrogen Tetroxide

et al. 2022

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“…Dimethyl aminoethyl azide (DMAZ) is a suitable candidate for replacement of hydrazine fuels in space programs. It is non‐carcinogen and has good physicochemical and performance properties 1–3. In the production process of DMAZ, the final product always contains 2–5 wt % of water 4.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the Pervaporation for Dehydration of Dimethyl Aminoethyl Azide by Ceramic Composite Membranes

Alikamar

Pakdehi

2021

Chem Eng & Technol

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Pervaporation as a membrane process is applied for dehydration of organic mixtures. The performance of a composite ceramic membrane was assessed in the pervaporation process for dehydration of dimethyl aminoethyl azide (DMAZ) solution under different operational conditions. The system behavior was modeled, and the model solved numerically with the finite element method via COMSOL software. Good verification in experimental and modeling results was observed with calculated errors of less than 2 %.

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Performance Assessment of Binary Liquid Fuels DMAZ-TMEDA with Some Nitric Acid-Based Oxidizers

et al. 2022

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The Effect of Some Amines on Ignition Delay Time of Dimethyl Amino Ethyl Azide (DMAZ) and White Fuming Nitric Acid (WFNA)

Cited by 6 publications

References 23 publications

Reactive Molecular Dynamics Calculation and Ignition Delay Test of the Mixture of an Additive and 2-Azido-N,N-dimethylethanamine with Dinitrogen Tetroxide

Reactive Molecular Dynamics Calculation and Ignition Delay Test of the Mixture of an Additive and 2-Azido-N,N-dimethylethanamine with Dinitrogen Tetroxide

Modeling of the Pervaporation for Dehydration of Dimethyl Aminoethyl Azide by Ceramic Composite Membranes

Performance Assessment of Binary Liquid Fuels DMAZ-TMEDA with Some Nitric Acid-Based Oxidizers

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