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Shock tube study of the effect of unsymmetric dimethyl hydrazine on the ignition delay of methaneoxygen-argon mixtures

✍ Scribed by R.Ravi Kumar; K.A. Bhaskaran

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
328 KB
Volume
27
Category
Article
ISSN
0010-2180

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✦ Synopsis

The effect of trace quantities (4 to 15% of methane) of pure unsymmetric dimethyl hydrazine (UDMH) on the ignition delay of methane-oxygen diluted with argon has been studied behind reflected shock waves, over a temperature range 1600-2100 °K, at a pressure of 3 atm and composition range of 0.5 to 2.0 (tb) times the stoichiometric ratio. Ignition was identified by pressure rise and by visible light emission using piezoelectric pressure and photomultiplier detection respectively. The delay periods were found to decrease with increasing quantities of UDMH. The reduction in the delay period was found to be more for cb = 0.5, less for cb = 1.0 and least for cb = 2.0. A probable reason for this phenomena is offered.

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