John - Getting off-topic but one thing that eluded me with the Silverbird
methodology was the confidence interval at the end. I wound up reverse
engineering most of it into an Excel sheet in case the site went offline
(and then putting it into a forward-calculator for building up a launch
vehicle for a given payload and propellant constraints, again for personal
use though I did wind up using it in Realism Overhaul for KSP) but I never
could figure out where the 95% CI came from. Regarding Electron - maybe
it's down to greater influence from drag rather than purely gravity losses
because the BC is smaller?
Best,
-Matt L.
On Mon, Jan 17, 2022 at 4:52 PM John Schilling <
john.schilling@xxxxxxxxxxxxxx> wrote:
On 1/17/2022 10:03 AM, Henry Spencer wrote:
On Mon, 17 Jan 2022, Matthew JL wrote:And it's long overdue for some updates; I need to get on that.
Tangent - John, if you are the same Dr. Schilling behind Silverbird
Astronautics...
Yup, he is.
Henry
Unfortunately the most-requested update is for the Electron, and I've
still not been able to come up with a model that matches their claimed
performance on that one - too many weird things going on there.
John Schilling
