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Back. I got lots of pictures but for some reason I haven't been able to figure out imgur won't accept them from this computer. So they'll have to wait a few days until I have access again to a different computer.
Anyway... I think the double sonic booms that the Falcon 9 first stage makes when returning to land are louder than the ones the shuttle made. I have no data our understanding of why that might be... just my experience of being very near the landing sites of both during landings.
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The shuttle sonic booms came off the vehicle when it was flying by (vertical shock wave) the runway a few miles off shore at altitude, and it was a couple minutes before landing. This thing comes screaming in strait down so the shock waves travel horizontally off of it. I don't know the decent velocity but it's pretty dam fast since it was like 2 seconds after landing that I heard the booms and the engines.
I was at the VAB during launch and landing so prolly 8 miles strait line from the landing pad, where were you at?
Would be cool to have an arfcom launch get together sometime.