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  #81  
Old 08-10-2020, 08:45 PM
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Royatl Royatl is offline
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Quote:
Originally Posted by 5x7
Cool, Wow! Is around 100fps at ejection correct?



220 fps at burnout, 90 fps at ejection so probably could've gotten another 50 ft in altitude.


Here's a flight I made Saturday on a C6-5 (no altimeter or fancy graphics, unfortunately)

https://youtu.be/lb1ekZhnopM
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  #82  
Old 08-10-2020, 08:54 PM
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Quote:
Originally Posted by Royatl
220 fps at burnout, 90 fps at ejection so probably could've gotten another 50 ft in altitude.


Here's a flight I made Saturday on a C6-5 (no altimeter or fancy graphics, unfortunately)

https://youtu.be/lb1ekZhnopM


Sweet! Second base?
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  #83  
Old 08-10-2020, 09:40 PM
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Quote:
Originally Posted by Royatl
220 fps at burnout, 90 fps at ejection so probably could've gotten another 50 ft in altitude.


Here's a flight I made Saturday on a C6-5 (no altimeter or fancy graphics, unfortunately)

https://youtu.be/lb1ekZhnopM
Great flight Roy. Looks like a nice sized field you guys fly at in GA.
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  #84  
Old 08-10-2020, 11:27 PM
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Royatl Royatl is offline
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Quote:
Originally Posted by 5x7
Sweet! Second base?


Short. Infield fly rule.
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  #85  
Old 08-10-2020, 11:40 PM
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Quote:
Originally Posted by snaquin
Great flight Roy. Looks like a nice sized field you guys fly at in GA.

The field we launch low power from is about 1800 ft long, but only 400 ft wide. There's an adjacent baseball field (which the astrocam landed in), and an adjacent track/ tennis courts, but lots of thick trees between them. And under the trees are a large creek and a small creek. And for some reason the trees suck rockets towards them. In winter, the trees reveal their haul over the years! Hard to do mid power there, but it can be done. A kid flew an Argent on an F15 this weekend and it landed about 50 ft from the pad. I've flown a NCR Phantom one a G40 three times there, but it has to be a NO WIND weekend (like this one... though the Astrocam still jumped the trees to get to the ballfield.)

However, the school likes us there, we've been there thirteen years and it's the closest place we have to Atlanta proper. So we do one launch a month there. In the next couple of months we start flying mid-high power about an hour away west of Cartersville, with a 2700' diameter sod farm and an extension that goes with prevailing winds up to a mile. Can't wait!
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  #86  
Old 08-10-2020, 11:47 PM
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Here's another on a C6-5 from the same day as the other two (last Friday). https://youtu.be/X1qcNIyeBBM

I figured out (finally) that the place to tether the pouch containing the FlightSketch Mini was not at the base of the nose cone where the shock cord was attached but to the same loop that the parachute is attached to. After I started doing this, I got far less tangling of things and therefore better results on the descent (camera pointing more or less down, body of rocket in the frame most of the time).

I got another on a C6-5 today where the field was almost empty and the descent rate was reduced by some thermal activity, so a relatively slow descent. For some reason the FS Mini stopped recording at ejection on today's flight, however. I haven't started to do the data overlay on that one yet so it won't be up on YouTube for awhile.
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  #87  
Old 08-11-2020, 07:36 AM
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Quote:
Originally Posted by 5x7
Sweet! Second base?

Not Sweet. WHAT!
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