OK kind of like alcohol and LOx, O/F is much lower than hydrocarbons like
kerosene plus the exhaust is transparent studded with shock diamonds. So is
the ISP somewhat lower than PB for similar reasons?
Ken
On Tue, Jul 7, 2020 at 10:26 PM Troy Prideaux <troy@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Yes no metals within that propellant, but also, PPG has a fair bit of
oxygen itself, so it’s easier to produce a smoke free exhaust than with
something like a polybutadiene as a binder which might still provide
noticeable black carbon (rich diesel looking) exhaust utilising the same %
of AP. I was able to do it with a 75% ratio of AP.
Troy
*From:* arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx]
*On Behalf Of *roxanna Mason
*Sent:* Wednesday, 8 July 2020 2:43 PM
*To:* arocket@xxxxxxxxxxxxx
*Subject:* [AR] Re: Making composite APCP in Australia
"no smoke"
Do you mean no aluminum?
On Tue, Jul 7, 2020 at 8:45 PM Ben Brockert <wikkit@xxxxxxxxx> wrote:
On Tue, Jul 7, 2020 at 8:19 PM Troy Prideaux <troy@xxxxxxxxxxxxxxxxxxxxx>
wrote:
BUT, the catch is the processing. You need to invest in the processingkit or get real clever with the chem.
Are you willing to go into any more detail, or is "process it at
temperatures and pressures that preclude the existence of water" the
crux of it? it being higher performance, full density, and no smoke
make me surprised that it isn't more common.
Thanks,
Ben