Astronot
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I just recently replaced my 24/40 case because I severely damaged my first one because I didn't know what I was doing.
You can refer to this thread if you wish. Aerotech 24/40 Test stand CATO
Thanks to you guys and/or gals I was able to figure out what I did wrong and learn from my mistake.
I just recently performed a second test stand firing of my replacement case and I consider it a success (No motor case damage and motor performed as expected), but I do have a question about what I found when I disassemble the motor case for cleaning.
The motor was much harder to assemble this time. I had to back off of the forward closure just to get the aft closure started. Once the aft closure was started I tightened the forward closure all the way and then proceeded to install the after closure with the tool I bought when I purchased my hardware originally.
OK, here are the pictures of what I found. By the way, I tried to take a picture of the motor in the thrust phase but when it ignited it startled me enough to throw my camera aim off. :sad:
The reload was an E18-7W. Very long delay. I didn't think it would ever fire the ejection charge.
I have a question about the aft O-ring, It looks like it suffered significant burn through and the case liner seems to have a dimple or crease in it. I don't know if you can see it in the photograph but the crease goes down most of the length of the case liner. I can only assume that this dimple occurred when I was tightening done the aft closure.
Thanks for the feedback and help,
David
You can refer to this thread if you wish. Aerotech 24/40 Test stand CATO
Thanks to you guys and/or gals I was able to figure out what I did wrong and learn from my mistake.
I just recently performed a second test stand firing of my replacement case and I consider it a success (No motor case damage and motor performed as expected), but I do have a question about what I found when I disassemble the motor case for cleaning.
The motor was much harder to assemble this time. I had to back off of the forward closure just to get the aft closure started. Once the aft closure was started I tightened the forward closure all the way and then proceeded to install the after closure with the tool I bought when I purchased my hardware originally.
OK, here are the pictures of what I found. By the way, I tried to take a picture of the motor in the thrust phase but when it ignited it startled me enough to throw my camera aim off. :sad:
The reload was an E18-7W. Very long delay. I didn't think it would ever fire the ejection charge.
I have a question about the aft O-ring, It looks like it suffered significant burn through and the case liner seems to have a dimple or crease in it. I don't know if you can see it in the photograph but the crease goes down most of the length of the case liner. I can only assume that this dimple occurred when I was tightening done the aft closure.
Thanks for the feedback and help,
David