“Do lithiated rocket programs take into account that lithiated propulsion
engineers will be less worried about performance numbers?”
Perfect 😊
From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> On Behalf Of
Ben Brockert
Sent: Tuesday, May 3, 2022 12:12 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Regarding alitec propellants
Wouldn't that show up as variation of c* efficiency? The models assume the
chemicals are fully involved, if a significant amount of propellants are going
out the nozzle unreacted then there would be a performance shortfall between
the real motor and the model.
Does non-lithiated HTPB run at 85% c* typical?
Do lithiated rocket programs take into account that lithiated propulsion
engineers will be less worried about performance numbers?
On Tue, May 3, 2022 at 6:28 PM Barry Jolly <1bcjolly@xxxxxxxxxxxxx
<mailto:1bcjolly@xxxxxxxxxxxxx> > wrote:
Question: Do computer programs such as Micropep and NASA’s CET85 have the
ability to predict improvements in parameters, such as Isp, due to changes in
combustion phenomena? From my understanding of Alitec’s explanation, their
propellants increased performance is due to a difference in boiling temperature
of lithium as compared to aluminum in alloy form causing an explosion of the
alloy into nano-type particles which burn very close to the surface of the
propellant. Such explanation appears to me to be based on burning
characteristics of the propellant rather than differences between enthalpies of
propellant reactants and exhaust products.
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