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UID:0-372@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20180725T163000

DTEND;TZID=Asia/Jerusalem:20180725T173000

DTSTAMP:20230527T140213Z

URL:https://aerospace.technion.ac.il/events/investigation-of-abs-paraffin-
 based-3-d-printed-hybrid-rocket-fuels/

SUMMARY:Investigation of ABS-Paraffin Based 3-D Printed Hybrid Rocket Fuels
DESCRIPTION:Lecturer:Jacob Bresler\n Faculty:Department of Aerospace Engine
 ering\n Institute:Technion – Israel Institute of Technology\n Location:C
 lassroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract
 : \n Details: \n Chemical rocket propulsion systems can be divided into so
 lid\, liquid\, and hybrid propellant systems. Despite the numerous benefit
 s that hybrid rocket systems enjoy over both solid and liquid propellant s
 ystems\, their widespread implementation has not yet been achieved. This i
 s due to the low regression rates of classical non-liquefying hybrid fuels
 \, as well as the poor mechanical properties generally possessed by higher
  performance liquefying hybrid fuels.\nPrevious works into improving the m
 echanical properties of liquefying fuels\, such as paraffin\, generally we
 re limited to the blending of the paraffin with polyethylene\, which does 
 provide some improvement\, but also slightly decreases the regression rate
  of the paraffin fuel. This research presents an investigation on the effe
 ct of the addition of an internal skeleton composed of ABS on the performa
 nce of a Paraffin/GOX hybrid propellant system.\nThe most important findin
 gs of this research were the significantly increased regression rate obser
 ved for the grains that possessed ABS structures when compared to the regr
 ession rate for grains composed solely of Paraffin\, this added regression
  rate was also accompanied by better mixing between the fuel and oxidizer\
 , as well as a higher combustion efficiency. For the oxidizer fluxes studi
 ed the regression rates of the ABS grain was approximately .2 mm/s\, of th
 e pure paraffin grain about 1 mm/s whereas for the ABS-paraffin structure 
 the regression rate reached 1.4-1.6 mm/s\, which seems to be a great impro
 vement.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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