Enough power, stable off the pad, each stage powered and stable, deployment, not breaking the freaking escape tower, sports scale good looks. So many complexities!
Genius.... torpedo chutes in the stuffer tubes....Consider making only the center motor a -0, and the outboards -3. Then the flash pan ignites in an orderly manner from center to outboards. This has the added happy effect that you can use the outboards for chute deployment.
Will 5xC6 get all that weight moving fast enough? 18mm composite motors on first stage?And if you want to do a moon shot.. load it up with C6 motors in all the stages and an A motor in the 4th stage for a 2,800 foot apogee
But the chances of finding all the parts would be Slim and Nun. Slim is still walking around at the launch site; the Nun went back to the convent.
View attachment 548375
31.6 mph off the rod. Anything over 30 mph I consider guud enuff.Will 5xC6 get all that weight moving fast enough? 18mm composite motors on first stage?
A nice, long, strong and thick rod! Warm, no wind and at altitude!31.6 mph off the rod. Anything over 30 mph I consider guud enuff.
Well done Old Chap! Well done.
Thanks for the suggestion.I've never done flashpan inside a rocket... not sure I'd want to. If I were doing it, I'd use ultra fast burning paper fuse from one of the previous stage motors to the 5 next stage motors.
https://www.skylighter.com/collections/firework-fuse/products/quick-fuse-white-gn1207
It lights VERY easily (as easily as BP) and burns at 0.1sec per foot. 5 sections from the central booster motor to the 5 next stage motors is how I'd do it.
Yes Mr. RSO, I ditched the internal flash plan for quick fuse!I've never done flashpan inside a rocket... not sure I'd want to. If I were doing it, I'd use ultra fast burning paper fuse from one of the previous stage motors to the 5 next stage motors.
https://www.skylighter.com/collections/firework-fuse/products/quick-fuse-white-gn1207
It lights VERY easily (as easily as BP) and burns at 0.1sec per foot. 5 sections from the central booster motor to the 5 next stage motors is how I'd do it.
In the motor, I expose 1/4" of the match inside and put that into the motor nozzle. That is secured with an Estes plug if there is room and if not, a wad of wadding and masking tape over the nozzle. For the booster ejection end, similarly expose 1/4" of the match and bundle all of them together with the exposed ends into the ejection area. That is then secured with masking tape.Thanks for the suggestion.
Do you just insert these into the motor and secure with ignitor plug, or secure them with masking tape to the motor?
Just curious if there are any techniques to ensure success.
I used only a single booster motor so that all staging is based on that motor. The others were standard delay motors. I also wrapped the paper fuse (not quick match!!, that's regulated) with aluminum tape so that if the booster motor didn't fire for any reason, the delay motors didn't light the paper fuseYes Mr. RSO, I ditched the internal flash plan for quick fuse!
Again, with fuse, how do you get (guarantee) the upper stage motors to light simultaneously given the slighty different burn rates of the booster C6 0s?
An internal flash pan blowing off a burning interstage ring would be so awesome. EXTRA SCALE POINTS!
Could it be this will work? Is Lakeroadster the Kwisatz Haderach?
Go to that place where you dare not go......there you will find him.Could it be this will work? Is Lakeroadster the Kwisatz Haderach?
But I want on board footage of the booster section blowing off with the burning interstage ring blowing off right behind it! Maximum scale pointage! My expectations are super high!My concern with the 2nd stage flash pan ignition was stage separation occurring prior to motor ignition due to rapid pressurization when the powder ignites.
The fuse eliminates that issue.
We safety dancing zealots find this place...terrifying. Kill the abomination...get out of my mindsim!Go to that place where you dare not go......there you will find him.
Simple! Quick fuse from the center booster motor to a cross-shaped flash pan under the second stage motors. It's probably slightly easier to prep than multiple fuses to all of the second stage motors.But I want on board footage of the booster section blowing off with the burning interstage ring blowing off right behind it! Maximum scale pointage! My expectations are super high!
Simple! Quick fuse from the center booster motor to a cross-shaped flash pan under the second stage motors. It's probably slightly easier to prep than multiple fuses to all of the second stage motors.
That's a lot of RPM. I'd be pretty surprised if it got anywhere close to that, but that's just a mindsim talking. Regardless, it would be prudent to plan for that much spin just in case it does happen. I see two straightforward ways to handle this, depending on your preferences.Part of my concern is the canted fins. The rocket will be spinning (per the sim) at 960 rpm's at 1st stage burnout. I'm thinking that won't be to conducive to black powder loose in a flash pan.
Thoughts?
Dream on, Dream on. Maybe tomorrow the good lord will take me away.That's a lot of RPM. I'd be pretty surprised if it got anywhere close to that, but that's just a mindsim talking. Regardless, it would be prudent to plan for that much spin just in case it does happen. I see two straightforward ways to handle this, depending on your preferences.
Option 1: Flashpans! Rather than a cross-shaped flash pan, set up five little cups of 18mm tubing at the top of Stage 1. These are sealed on the bottom, open on the top, and aligned with the 5 motors above so that they fit over the base of the motor. A little dollop of BP in each will do the job. Connect them in a cross shape with the quick fuse so that when the center one flashes off, the outboards go very shortly thereafter. Connect the center one with the center -0 motor in the first stage as previously discussed. At 0.1s/ft burn rate, all five will light nearly simultaneously in a blaze of glory suitable for @Daddyisabar's wildest dreams.
Option 2: Booooring! Basically the same as Option 1 except that the fuses for the outboards lead direct to the motors instead of to flashpans. Those fuses will need to be secured to Stage 2 somehow.
The big difference is where you do your prep. For Option 1, the prep for lighting Stage 2 happens entirely in the Stage 1 envelope. In Option 2, you have a hybrid of stuff that in Stage 2 (fuses for the outboards) and Stage 1 (fuse for the center). That said, I don't see any reason why you couldn't light the center motor on Stage 2 with standard gap staging, then have the outboard fuses lit by the staging charge on the center motor. That would eliminate the fuse to the Stage 1 center motor, likely removing another possible point of failure.
Option 2 is easier to build and probably easier to prep. Option 1 has more fire. The choice is left as an exercise for the student.
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