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Status Report for 2 of my Flights Saturday, 5-8-21 1 month 2 weeks ago #3246

Attached is a link to some of the pics, videos, and info on a couple of my flights on Saturday. www.dropbox.com/sh/x9xzh235sjs6a1i/AACJG...pGdfDYFxeAQuesa?dl=0   2-stage Flight  I236 --> G58
There’s a before and after look of the 2 stager. Thanks to those that pointed out where it landed. And thanks to Emit Talley and Tom Laird for helping to extract the sustainer from the ground where it augered in and the pictures and videos they sent me. I’m pretty sure the failure was due to a stuck parachute with JL Chute Release binding in the body tube. The charge fired. I always ground test after estimating the charge via BP calculators. My ground test video is included.
Now a damage report…. 
The Eggfinder module was crinkled and is now junk. The LiPo battery with it exploded into little tiny pieces. 
The chute release doesn’t work. JL gave me some ideas to fix or I can send it back to him. Some of the parachute got melted since it wasn’t ejected.
The sustainer video camera kinda works.  The audio is out of sync.
The Proton flight computer lives! Even though the all threads are bend on the sled, I was able to download data from it. Its LiPo battery is a little deformed but seems to work. Eggfinder owner, Cris Erving told me that he uses 1/16” boards vs 1/32” so that helps when I told him the Proton survived.
Data….Apogee was 3290’ according to the Proton. Lower than the sim, but I hadn’t accounted for the 2 strapped on cameras and their drag. The sustainer lit at 700’. The booster topped out at 1404’ and is undamaged. I included a slo mo from the camera on the booster looking up. Unfortunately, at mid day, you’re looking sometimes at the sun. You can hear the ignition and then the motor pressuring up. You can see that I had a little drag separation just before ignition of the sustainer. A better view is with the down looking sustainer camera (with the audio out of sync).
Greezd Lynt’in 
I included the Stratologger CF flight profile of this flight on a J316 (pink). The RRC2+ redundant altimeter recorded 2582’. I’ve had really good agreement between the MissleWorks and Perfectflite altimeters.

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Last edit: by Allan Howard.

Status Report for 2 of my Flights Saturday, 5-8-21 1 month 2 weeks ago #3247

Hi Allan,
Thanks for sharing and sorry for the loss of the sustainer. That looks to be damaged a bit past the "you can buff that out" stage. Hopefully you plan on rebuilding it and flying it again. See you again at the next launch!

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Status Report for 2 of my Flights Saturday, 5-8-21 1 month 1 week ago #3248

I am sorry about all the electronics, especially since it's another JLCR 'event.'

After the smack-in of my fiber-glassed Mini-Magg I won't use JLCR for anything but mid-power rockets BT70+ that can survive an oops on grass. I've had both the "stuck in tube" oops and the "it released but didn't unfurl the chute" oops.

Apologies / Robert
Cheers / Robert

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Status Report for 2 of my Flights Saturday, 5-8-21 1 month 1 week ago #3252

Well, after looking at the fin can, I will rebuild with the parts I have left over. Basically, I can salvage the fin can albeit a few inches shorter. BTW....JL's advice worked. I did resolder the button and it now appears to work again. Not sure I'll have the sustainer ready for the next launch, but it will live again.

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