Many thanks to Sean for providing this back-of-the-envelope calculation, which estimates how high Dean Gokel's "pigoline" generator flew during the explosion chronicled first here then here:

If it was 87 degrees, and all acceleration came from a single blast, then to land 80 yards away, the biostill would have to have been traveling around 271 fps, or about 185 mph. Total hang-time: 17 seconds; max height: 1174 feet. Of course, that's a simplified calculation.

The only thing I remember from high-school physics is that my teacher's name was Ken, and his wife, no joke, was named Barbie.