Gelled liquid oxygen/metal powder monopropellantsAl, Al-80/Mg-20 wt pct, Si, and Fe powders were mixed with LOX and gelled with 2-3 wt pct Cab-o-Sil to viscosities of 100 to 900 cps, at shear rates of up to 300/sec. These monopropellants were burned in a cylinder that was submerged in a liquid nitrogen bath. Ambient pressure data have shown that the monopropellants were extinguished when the flame front reached regions that had been submerged under the liquid nitrogen. Burning occurred in a pulsed fashion, and was most nearly steady in the case of the Al-Mg mixture. No sparking or energetic burning occurred in any of the cases tested.
Document ID
19920066380
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wickman, John H. (NASA Lewis Research Center Cleveland, OH, United States)
James, Eric (Wickman Spacecraft and Propulsion Co. Citrus Heights, CA, United States)