Bruno_do you have a report about your findings with such torch inside a
chamber?
Our torch inner tube kept melting, even burning & sparking. The paper
advises Haynes alloy for that tube instead of nickel. Next the torch
propellants and the cooling GH2 around the tube have the engine pressure to
counter. Influencing ratio GH2/GOX ratio maybe. Easy?
jd
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Bruno Berger
Sent: maandag 20 juli 2015 19:41
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: bipropellant torch igniter
We used H2/O2 torch igniters on our test stand for all engines we have fired
so far. It reliably ignites under almost every condition and mixing ratio
and does not produce any residues (Except condensed water which can be a
problem when it accumulates close to spark plug) In a flying vehicle I would
use the propellants which are already on board...
Bruno
"At that time [1909] the chief engineer was almost always the chief test
pilot as well. That had the fortunate result of eliminating poor engineering
early in aviation" (Igor Sikorsky)
--
Bruno Berger
Swiss Propulsion Laboratory
E-Mail: bruno.berger@xxxxxx (HTML-Mails will be dropped!)
PGP: http://www.spl.ch/contact/Bruno.Berger.asc
WWW: http://www.spl.ch
HAM: HB9RSU
Am 20.07.2015 um 16:16 schrieb John Dom:
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940022921.pdf
with it?
Does anybody know of any operational bipropellant motor inside which
the above GH2/GOX torch igniter was used? Does anybody have experience
BTW, SSME used no torches but 6 sparkers (sort of spark plugs) inside
each chamber and probably more sparkers on the pad.
jd
