Spin Launch goes around in circles with Ka'u

[kander]

yet you won't explain how that can possibly be true.


https://youtu.be/JAczd3mt3X0


And if the island never sees a dime from SpinLaunch, it's nothing to do with the company, it will be due to the attitude of a small group of people here who want progress stopped and not allow new opportunities for Big Island folk at a time when they are desperately needed.

Ok, So there are a bunch of issues Tom.
Doing some Delta V calculations on a Lox Engine for the second stage would need to be close to 2800Kg wet. (2500Kg of fuel, 200Kg Payload, and 100Kg for Engine, turbo pump, comms, guidance etc)
The centripetal forces (about 10,000G) will create a load of 32,000,000Kg of force At the end of each arm.
They aren't very clear of what magical device they plan on using to hold that kind of force that could be released in less than a millisecond, But if they plan on using explosive bolts they would be gargantuan. A 4.5" bolt will only hold 566,000KG. Explosive bolts of that size may damage the payload.
They conveniently leave out where they are going to dump the counterweight going 2Km/s at the same time the payload is launched. a 2800Kg mass or 1.3Tons kinetic equiv of TNT in the sand ought to make a thud.
Can they make a vacuum chamber that will hold stable at a few mT? maybe.
Can they detonate all the explosive bolts within a few ms. sure.
Will the payload survive the launch? doubtful.
Im kinda looking forward to the rapid unscheduled demolition it will be entertaining.

I guess when you say "small group of people" it must be  "racist" codeword for Native Hawaiian?