Is it exponential, or logarithmic?
--
Ian M Garcia
________________________________
From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> on behalf of
Dr Edward Jones <RocketPioneer@xxxxxxxxx>
Sent: Tuesday, January 26, 2021 10:54:21 PM
To: arocket <arocket@xxxxxxxxxxxxx>
Subject: [AR] Mass fraction vs Isp
Seems to me that (all other things being equal) improving the
propellant mass fraction is exponentially more effective than
improving Isp of the propellant.
In flights to orbit, won't a one percent better mass fraction be more
effective than a one percent improvement in Isp? And isn't one a
linear improvement, while the other is exponential?
Edward Jones