Kip_Daugirdas
Well-Known Member
- Joined
- Jun 2, 2013
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Hi all,
I am looking for anyone with real world experience using webbing or rope guides as recovery anchors. This is in terms of 10-20 lb rockets. If so, what kinds, sizes etc. Below are examples...
Webbing guide: https://www.mcmaster.com/#8030t15/=y93d9k
Rope guide: https://www.mcmaster.com/#8860t81/=y93d2q
Why I'm considering the use of rope guides or webbing anchors?
1.) Lower profile than U-bolts, Eye-bolts, or Eye-nuts. In a 3" or 4" airframe, the previously mentioned anchors eat into the recovery space because they stick out 1-2" from the bulkhead and take up unnecessary space.
2.) Easier to install. Webbing guides can be installed via tapped holes on aluminum bulkplates - removing the need for nuts on the backside (U-bolts)
3.) Shorter profile = lower weight
What McMaster doesn't provide is load ratings for the guides. Outside of me starting ANSYS on my computer and doing an FEA, I have no way of finding out the rating. Just by looking at the webbing guide, I can see that it will have a lower load rating than a rope guide due to the smaller radii (higher stress concentration).
Another option for low profile anchors are tie-downs. However from the ones I purchased on McMaster are heavy and overkill (load rating wise) for a 15 or 20 lb rocket.
Any help or insight is much appreciated!!! Thanks!
-Kip
I am looking for anyone with real world experience using webbing or rope guides as recovery anchors. This is in terms of 10-20 lb rockets. If so, what kinds, sizes etc. Below are examples...
Webbing guide: https://www.mcmaster.com/#8030t15/=y93d9k
Rope guide: https://www.mcmaster.com/#8860t81/=y93d2q
Why I'm considering the use of rope guides or webbing anchors?
1.) Lower profile than U-bolts, Eye-bolts, or Eye-nuts. In a 3" or 4" airframe, the previously mentioned anchors eat into the recovery space because they stick out 1-2" from the bulkhead and take up unnecessary space.
2.) Easier to install. Webbing guides can be installed via tapped holes on aluminum bulkplates - removing the need for nuts on the backside (U-bolts)
3.) Shorter profile = lower weight
What McMaster doesn't provide is load ratings for the guides. Outside of me starting ANSYS on my computer and doing an FEA, I have no way of finding out the rating. Just by looking at the webbing guide, I can see that it will have a lower load rating than a rope guide due to the smaller radii (higher stress concentration).
Another option for low profile anchors are tie-downs. However from the ones I purchased on McMaster are heavy and overkill (load rating wise) for a 15 or 20 lb rocket.
Any help or insight is much appreciated!!! Thanks!
-Kip
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