Where did you source your brown iron oxide?
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On Mon, 10/8/18, Nikolai Nielsen <nielsen.nikolai86@xxxxxxxxx> wrote:
Subject: [sugpro] end burner motor
To: sugpro@xxxxxxxxxxxxx
Date: Monday, October 8, 2018, 10:32 AM
(re
sending because sugpro said message was too big)i have
just completed a successful test of an end burner motor
using sucrose and brown iron oxide. i found that the
smallest nozzle diameter could be 5.5mm and the pvc pipe is
schedule 40 40mm OD. The fuel mix was a standard 65/35 ratio
using 1% brown iron oxide. the punt depth is 5 mm. The fuel
was cast on the motor tube which is causing some problems
with the fuel that is up against the cement nozzle,
absorbing the moisture from it but i am still working on
waterproofing the nozzle on the inside to protect the fuel,
im thinking a two part adhesive should do it but i don't
have anything like that i can use that isn't expensive.
I considered wax but the hot fuel would melt it away. The
nozzle and fuel are separated by a small amount of homemade
gun cotton(nitrocellulose) which serves to create a space
for the flame to burn the fuel as soon as the gun cotton
catches fire which allows the fuel to burn from one side to
the other instead of the fuel burning just from the point of
ignition and radiating out. the length of the fuel grain was
about 5-6 cm, i didnt measure it as it isnt that relevant
for an end burner. Without a washer on the nozzle, the
erosion would open the nozzle about 5x wider so i drilled a
5.5 mm hole in a small square of sheet metal and placed it
on the nozzle mould in the image below. ive also included
the motor test video https://photos.app.goo.gl/mfjuKtFY9AD8XHxf7Nikolai
Nielsen
