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  #1  
Old 01-29-2023, 10:29 PM
Vanel Vanel is offline
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Default Looking for Estes Astron Explorer fin data

Anyone got the dimensions/shape? Either numbers or a pic with ruler would be helpful. Iím trying to sim it and I canít find any Rocksim/OpenRocket files.

Thanks much!
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  #2  
Old 01-30-2023, 05:00 AM
Scott_650 Scott_650 is offline
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Thereís a scan of the fins on the Ashasta site but no ruler for reference http://ashasta-sadie.com/2021/02/11/astron-explorer/
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  #3  
Old 01-30-2023, 04:58 PM
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erik442 erik442 is offline
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Default astron explorer fin

A few photos
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Name:  astron_exp2.jpg
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  #4  
Old 01-30-2023, 05:22 PM
Vanel Vanel is offline
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Just what I needed - Thanks very much!
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  #5  
Old 01-30-2023, 06:13 PM
Vanel Vanel is offline
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OpenRocket (22.2.beta.5) file attached. Internet tells me the BT-20 pod tubes are 12 inches long, hoping that's right. Had to leave off the plastic tail cone as i have no specs for that, but inserted a mass object at the CG to bring the weight up to the value on the face card.
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File Type: ork astron_explorer.ork (4.2 KB, 5 views)
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  #6  
Old 01-30-2023, 08:33 PM
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erik442 erik442 is offline
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I can confirm the pod tubes are 12" long.
The instructions list the lower detail cone as part no. 071044.
Exposed length is 6.5", shoulder length is 1", taper under shoulder is 3/8" in length.
Tail cone is part no. 072690. Exposed length 11/16", shoulder is 1/4". Rear taper diameter is 1-1/8".
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  #7  
Old 02-01-2023, 01:17 PM
wizardofflight wizardofflight is offline
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Here is a full size PDF extracted from the Estes instruction sheet. It is 4 in wide balsa. I did rearange the fins to fit on std 8.5x11 paper
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File Type: pdf 7264 ASTRON EXPLORER FINS 4in.pdf (7.5 KB, 21 views)
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