3 ms·
in the high power rocketry the newer flight controllers that have staging capabilities have lockouts now. We can configure logic like "only fire the second stag
by chasd00 3y ago
in the high power rocketry the newer flight controllers that have staging capabilities have lockouts now. We can configure logic like "only fire the second stage igniter if N seconds have elapsed since stage 1 burnout AND the rocket is traveling at a min of X ft/sec AND no more than Y degrees off vertical". It makes things a lot safer and more convenient
1) an M motor igniting 45 degrees off vertical 20k feet up means a long drive let alone a long walk.
2) an M motor igniting at a negative velocity ( descending and likely pointing down) is very scary heh.
- vidanay 3y agoWe had Christmas paper tubes, balsa fins cut with a dull xacto knife, a hand carved nose cone and a super glued washer as a thrust ring.
- systems_glitch 3y agoThat sounds about right :P There's some really cool stuff nowadays, but I certainly didn't grow up with it!
- polishdude20 3y agoA year back or so I built a thrust vectored model rocket with two stages using an Estes E12 and an F15 motor for the second stage. The flight computer had logic in it to only light the second stage if the first stage had been successful to lift off the ground and the rocket at some vertical angle plus/minus some degrees and the velocity was positive upwards and non-zero. Luckily this first attempt worked out! https://www.youtube.com/watch?v=zPtFv-cwcfQ https://www.youtube.com/watch?v=zPtFv-cwcfQ The first stage was designed to be pushed out by the second stage and a bit before the first stage was completely out or the rocket would lose too much control authority.