The High Power Rocketry blog found this video of the Navy's 2006 rocket sled record of 6,453 mph. I previously posted about the 1/31/2008 run that broke that record with a speed of 6,589 mph. Actually, I never saw the official confirmation of the unofficially reported speed. Oh, well no matter - the 4 stage sled in the video is generally the same as the newer version. Like we could tell 6,453 mph from 6,589 anyway. Note the staging...and the impact at the end!
Two other related posts: