Mikeym_us wrote: |
so how do the passengers avoid upper body injuries while sitting in the jump seats between the ribbing. |
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I'm not quite sure I am understanding your question. The troop seats in CH-46s didn't have any backs to them. On CH-47s the troops seats have adjustable seat backs but neither design is going to prevent upper body injuries. It isn't as if there is armor plate nor are they 'crash attenuating' seats...
Both types are of a very simple construction consisting of nylon material stretched over aluminum tubing. The lower support legs fit into recepticles in the cabin floor and can be disengaged in order to fold the seats up along the cabin interior to allow for the loading of vechicles, pallets of cargo and other oversized equipment.