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UID:0-192@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20230313T133000

DTEND;TZID=Asia/Jerusalem:20230313T143000

DTSTAMP:20230228T084626Z

URL:https://aerospace.technion.ac.il/events/hypergolic-ignition-of-kerosen
 e-based-gel-fuel-with-hydrogen-peroxide-in-rocket-motors/

SUMMARY:Hypergolic Ignition of Kerosene-Based Gel Fuel with Hydrogen Peroxi
 de in Rocket Motors
DESCRIPTION:Lecturer:Roni Goldin\n Faculty:Department of Aerospace Engineer
 ing\n Institute:Technion – Israel Institute of Technology\n Location:Cla
 ssroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: https://techn
 ion.zoom.us/j/97346140543\n Abstract: The present work seeks to characteri
 ze the hypergolic ignition of a proprietary propellant. It consists of hyd
 rogen peroxide as oxidizer\, a kerosene-based gel fuel and a certain amoun
 t of sodium borohydride as an energetic additive.\n An experimental parame
 trical investigation was conducted in order to correlate between different
  physical and chemical parameters that affect ignition delay times. The af
 orementioned parameters are Weber and Reynolds numbers\, momentum\, kineti
 c energy and hydrogen peroxide concentration. The videos of the conducted 
 drop-on-drop test were analyzed using digital image processing. The phenom
 enon of ignition and combustion of the gelled fuel was divided into two ma
 in events: the "Primary Ignition" and the "Fuel Ignition". These delay tim
 es were calculated and plotted versus all different parameters and analyze
 d.\nIncrease in momentum and kinetic energy led to about 40% reduction in 
 both primary and fuel ignition delay times. Usage of 90% hydrogen peroxide
  led to decrease of more than 20 ms compared to 70% hydrogen peroxide. Min
 imal ignition delay times of 4-5 ms were observed.\n\n Details: \n 
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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DTSTART:20221030T010000

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