NOTE:
I was stationed in the UK for over three years during Maggie’s era,
working side-by-side with the Brits to keep the f’n commies off our beaches.
Looks like that was a waste of time (yeah, talkin’ to you Dems, too).
Oh, Boy, is this Greeaat!
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• Story
• Title cultural ref
Stuff That’s Hard to Do (4-10 Aug)
Routine Week Planned:
• SUN wee hours Falcon9, Starlink CA (now that‘s the fog I remember)
• SUN morning Falcon9, Cygnus FL (landing at Cape)
Cygnus ISS approach/capture
• SAT morning Falcon9, Starlink FL
Stuff That’s Hard to Do (28 Jul – 3 Aug)
BUSY WEEK: Falcon9 is back in operation
• SUN early am Falcon9, Starlink FL (300th booster re-flight)
• SUN morning Falcon9, Starlink CA
• TUE morning AtlasV, USSF FL
• THU night Falcon9, Starlink FL
• FRI mid-day Electron NZ local night-time
Go full-screen
@52sec the three inner engines ignite
Fun rocket-engineering stuff (intro to exhaust shape):
• The three outer engines are optimized for on-orbit ops,
while the three inner engines are optimized for sea-level ops, i.e. landing.
• The larger expansion ratio produces low nozzle exit pressure to match atmospheric pressure in space,
so the plume gets squeezed into an hour-glass shape by sea-level atmospheric pressure in ground testing.
• The smaller expansion ratio produces a higher exit pressure that matches ground atmospheric pressure,
so it’s not squeezed and is more efficient for landing.
• Any mass not moving straight back reduces thrust and efficiency.
• Yes, this will be on the exam (slide rules only, please)
