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Re: Metalurgy lesson ?
[QUOTE=jCandlish;50364]Attached please find "Fig 23. Streamline tube splicing using round tube (applicible to landing gears)." Reference CAM18.6141
[QUOTE]
LOL! funny you should mention that. I've been reading the follow-on to CAM 18, which is AC 43.13. It has the same illustration. Do you understand that to be showing cutting an oval slot in the top and bottom of the streamlined tubing, forcing a piece of round tubing into the streamlined tubing, then welding the streamlined tubing to the round tubing thru the oval? Now THAT's convuluted.
Now, I don't know if the CAM shows this, but in the AC, it's Figure 4.44. It shows a repair by inner sleeve for streamlined material. To get the inner sleeve, you take outer sleeve material, cut off part of the trailing edge and re-weld it. I'll start another thread on that technique as it's one i like, but got spanked for suggesting some time ago
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I like the technique shown in 4.44, but the original streamline tubing may no longer be available (I've been told and I haven't seen it in catalogs), so I may have to go up to a slightly larger streamlined tube. Using dissimilar dimension tubing is not unheard of; we see it when we decrease the longeron diameter as we go further aft, so... I'm wondering if I can use Forrest's suggestion of retaining a stub of original material, fabricating an internal sleeve, and completing the strut with slightly larger streamlined tubing. Your thoughts?
- MIke
[QUOTE=jCandlish;50364]Attached please find "Fig 23. Streamline tube splicing using round tube (applicible to landing gears)." Reference CAM18.6141
[QUOTE]
LOL! funny you should mention that. I've been reading the follow-on to CAM 18, which is AC 43.13. It has the same illustration. Do you understand that to be showing cutting an oval slot in the top and bottom of the streamlined tubing, forcing a piece of round tubing into the streamlined tubing, then welding the streamlined tubing to the round tubing thru the oval? Now THAT's convuluted.
Now, I don't know if the CAM shows this, but in the AC, it's Figure 4.44. It shows a repair by inner sleeve for streamlined material. To get the inner sleeve, you take outer sleeve material, cut off part of the trailing edge and re-weld it. I'll start another thread on that technique as it's one i like, but got spanked for suggesting some time ago
.I like the technique shown in 4.44, but the original streamline tubing may no longer be available (I've been told and I haven't seen it in catalogs), so I may have to go up to a slightly larger streamlined tube. Using dissimilar dimension tubing is not unheard of; we see it when we decrease the longeron diameter as we go further aft, so... I'm wondering if I can use Forrest's suggestion of retaining a stub of original material, fabricating an internal sleeve, and completing the strut with slightly larger streamlined tubing. Your thoughts?
- MIke
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