Behavior of the Lean Methane-air Flame at Zero-gravity

Behavior of the Lean Methane-air Flame at Zero-gravity

Microform - 1985
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"A special rig was designed and constructed to be compatible with the NASA Lewis Research Center Airborne Research Laboratory to allow the study of the effect of gravity on the behavior of lean limit in a standard 50.4 mm (2 in.) internal diameter tube when the mixtures are ignited at the open end and propagate towards the closed end of the tube. The lean limit at zero gravity was found to be 5.10 methane and the flame was found to extinguish in a manner previously observed for downward propagating flames at one g. It was observed that g-jitter could be maintained at less than or 0.04 g on most zero g trajectories. All of propagating lean limit flames were found to be sporadically cellularly unstable at zero g. There was no observable correlation between the occurrence of g-jitter and the lean limit, average propagation speed of the flame through the tube or the occurrence of cellular instability."--NTIS abstract.
Publisher: Urbana, Illinois : Aeronautical and Astronautical Engineering Department, University of Illinois ; [Cleveland, Ohio] : NASA Lewis Research Center, 1985.
Characteristics: 1 microfiche (ii, 40, [3] pages) : negative, illustrations ; 11 x 15 cm.

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