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UID:0-194@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20230313T133000

DTEND;TZID=Asia/Jerusalem:20230313T143000

DTSTAMP:20230504T121802Z

URL:https://aerospace.technion.ac.il/events/hypergolic-ignition/

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://techni
 on.zoom.us/j/97346140543\n Abstract: The present work seeks to characteriz
 e the hypergolic ignition of a proprietary propellant. It consists of hydr
 ogen peroxide as oxidizer\, a kerosene-based gel fuel and a certain amount
  of sodium borohydride as an energetic additive.\nAn experimental parametr
 ical investigation was conducted in order to correlate between different p
 hysical and chemical parameters that affect ignition delay times. The afor
 ementioned parameters are Weber and Reynolds numbers\, momentum\, kinetic 
 energy and hydrogen peroxide concentration. The videos of the conducted dr
 op-on-drop test were analyzed using digital image processing. The phenomen
 on of ignition and combustion of the gelled fuel was divided into two main
  events: the "Primary Ignition" and the "Fuel Ignition". These delay times
  were calculated and plotted versus all different parameters and analyzed.
 \nIncrease in momentum and kinetic energy led to about 40% reduction in bo
 th primary and fuel ignition delay times. Usage of 90% hydrogen peroxide l
 ed to decrease of more than 20 ms compared to 70% hydrogen peroxide. Minim
 al ignition delay times of 4-5 ms were observed.\n Details: \n 
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng

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DTSTART:20221030T010000

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