Standard 19 mm stinger tube and tooling.
Both using pure meal as the propellant, one tube cut 2.5" long, the other 3" as a longer duration burn test. Fused and primed in the usual manner.
Launched from a large bamboo skewer pushed into the sand.
Both flew well.
The longer stinger was slightly unstable on launch, tipping over and flying at a shallow angle. It was *very* fast though, flying hundreds and hundreds of metres down range, landing well out into the surf. It hummed quite loud, with a huge doppler shift from the massive acceleration.
The shorter device flew in pretty much the direction I aimed it, as all previous ones have. It also took off like a lightening bolt, reaching at least 75 metres before burn-out. It hummed very loud as well, a well-delayed echo very audible, probably from a large building about 300 metres away.
title | type | size |
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Long Device Video | video/x-msvideo | 1.038 Mbytes |
Short Device Video | video/x-msvideo | 664.724 kbytes |
Pre-Test Picture | image/jpeg | 43.562 kbytes |