Quite so, I do remember the 3 Atlas orange plumes. But so has steel when
combusting/melting in insufficiently cooled passages with for instance O2/H2.
Orange sparks appear even. We saw this with our ignition torch tests.
jd
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Ben Brockert
Sent: vrijdag 3 juli 2015 17:19
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: [UK OFFICIAL] Students Aim for Space with 3D-Printed Rocket
Engine
Lox/kero has bright orange plumage.
On Fri, Jul 3, 2015 at 9:57 AM, John Dom <johndom@xxxxxxxxx> wrote:
Is the orange exhaust due to metal powder remnants combusting or is
the 3D motor wall combusting in oxygen?
jd
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx
[mailto:arocket-bounce@xxxxxxxxxxxxx] On Behalf Of Aplin Alexander T
Sent: vrijdag 3 juli 2015 15:43
To: arocket@xxxxxxxxxxxxx
Subject: [AR] [UK OFFICIAL] Students Aim for Space with 3D-Printed
Rocket Engine
Classification: UK OFFICIAL
Handling Instruction: DISCLAIMER - this is a personal e-mail and only
represents the views of the sender
http://www.space.com/29808-students-3d-printed-rocket-engine.html
"There was still some sintering powder stuck in the passages after the
3D-print job. We were forced to put the injector in an ultrasonic
cleaner for a few days and were fortunate to see a large amount of
[the] powder leave it!"
Alex Aplin
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