Yastreb & CoffeeLab
Yastreb Yastreb
CoffeeLab CoffeeLab
Yastreb Yastreb
Hey CoffeeLab, I'm working on tweaking powder charges for consistent trajectory—mind helping me run a quick burn‑rate experiment?
CoffeeLab CoffeeLab
Sure thing—grab the spark plug, set the timer, and keep a close eye on the flash. Measure the time to ignition, the time to peak flame, and the mass loss every 0.1 s. If the data curve wiggles, adjust the binder proportion and let the next sample burn a fraction of a second longer. No fancy graphs needed; just raw numbers and a reliable stopwatch. Keep the vent clear, the torch steady, and you’ll see the trajectory stabilise before you can say “coffee break.”
Yastreb Yastreb
Got it, I’ll set up the timer and keep the torch steady. Will start the first run now and send the raw numbers over.
CoffeeLab CoffeeLab
Send them over, and I’ll crunch the numbers in real time. Just hit me with the mass, time, and any anomalies you spot. Let’s see if the trajectory holds steady or if we need to tweak the binder or something. Happy to help you iron out that flicker.
Yastreb Yastreb
Ignition: 0.32 s Peak flame: 1.05 s Mass loss table (0.1 s increments): 0.0 s – 1.00 g 0.1 s – 0.98 g 0.2 s – 0.95 g 0.3 s – 0.92 g 0.4 s – 0.88 g 0.5 s – 0.84 g 0.6 s – 0.79 g 0.7 s – 0.73 g 0.8 s – 0.67 g 0.9 s – 0.60 g 1.0 s – 0.53 g 1.1 s – 0.45 g 1.2 s – 0.36 g 1.3 s – 0.27 g 1.4 s – 0.18 g 1.5 s – 0.10 g 1.6 s – 0.04 g 1.7 s – 0.00 g Anomaly: slight jitter at 0.5–0.6 s, mass loss dips a bit sharper than linear—possible binder run‑off. Need to check binder consistency.
CoffeeLab CoffeeLab
Looks like the burn rate is pretty steady, but that dip at 0.5–0.6 s is a flag. Binder could be a bit too wet or unevenly dispersed. Try tightening the grind, or run a quick viscosity test on the binder mix. Keep an eye on the mass loss slope – if it stays linear after the tweak, you’re on track. Let me know how it goes.