Gordon Bain <[email protected]> writes: > Thanks, I'll try that next month, with the coast box unchecked. It only > cost me an H550 since the other motor didn't ignite. I built both stages to > fly an Hs-Js, and this was a low altitude shake down flight, which I > learned from, which is the point of the project.
FWIW, on my personal first two-stage project, the sustainer motor earned serious frequent-flyer status... it wasn't until the fourth attempt that I got it lit! Serious weather-cock with the TeleMega doing the right thing and not lighting it the first time, then a booster motor CATO, then an obscure actual bug found and fixed in our firmware... and finally an awesome flight! > Follow-up question, Speed and Height greater than are what the say, aren't > they? Yes. > I want to have a minimum height and ascending speed before the > sustainer igniter lights to remain near vertical The basic idea is that the complete set of conditions you set have to be true for the channel to fire. We generally recommend using as few conditions as possible to achieve the desired result. That helps you from accidentally putting together a combination that just won't ever fire. For a simple 2-stage flight, I like to just use after first motor burnout, within a tilt limit of vertical, and a fixed time after all other conditions are met. I choose the time after playing with the simulator and considering weather conditions. Feel free to try more complex combinations, but if this is your first two-stage project and you don't *need* more complexity, getting in a successful flight with a simple config and then getting more complicated from there might be a rewarding path? Regards, Bdale
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