Atlasboy
Well-Known Member
- Joined
- May 27, 2012
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- 282
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My L2 went well this weekend on my ARR Predator on a Loki J350. Folks really liked how that motor screamed.
I downloaded the data file from the Telemetrum (I realized the file from the radio stream had some drop outs which is why it looked weird).
Overall it looks very good. I made it under the AGL, hit Mach .8 and got a nice acceleration curve. Descent rates are the only part that bother me a little. Drogue was average of -76/ft/s. I'm pretty much okay with that. But main which opened at about 800 feet was an average of -34 ft/s. I was expecting something closer to 25-30.
The rocket had really minor damage. Just cosmetic paint scrapes, etc. that I think most people would just ignore. I touched her up anyway.
There is nothing even close to structural damage.
I'd prefer to have a softer landing but there just isn't any room for a bigger main chute. I can barely fit the four foot Rocketman in there as it is. I could put a larger drogue. But I'm not too excited about the prospect of having it go much further (it landed .63 miles away from the launch site).
Thoughts on a -34/ft/s descent? Maybe fire the main at say 1100 feet so I get a bit more time (main was open for 30 seconds on this flight). Or maybe just call it close enough and leave her alone?
I downloaded the data file from the Telemetrum (I realized the file from the radio stream had some drop outs which is why it looked weird).
Overall it looks very good. I made it under the AGL, hit Mach .8 and got a nice acceleration curve. Descent rates are the only part that bother me a little. Drogue was average of -76/ft/s. I'm pretty much okay with that. But main which opened at about 800 feet was an average of -34 ft/s. I was expecting something closer to 25-30.
The rocket had really minor damage. Just cosmetic paint scrapes, etc. that I think most people would just ignore. I touched her up anyway.
There is nothing even close to structural damage.
I'd prefer to have a softer landing but there just isn't any room for a bigger main chute. I can barely fit the four foot Rocketman in there as it is. I could put a larger drogue. But I'm not too excited about the prospect of having it go much further (it landed .63 miles away from the launch site).
Thoughts on a -34/ft/s descent? Maybe fire the main at say 1100 feet so I get a bit more time (main was open for 30 seconds on this flight). Or maybe just call it close enough and leave her alone?