Originally Posted by
Mike-Bracknell
A little p.s. from me - having looked at Clive's diagram on this page showing the bathtubs, aren't the strengtheners the oval cups outboard of the main fixings on the page? with one pointed to by the words "Bottom machined skin panel"?
Nope.....
You're looking at a generic picture of the junction between the upper and lower skins of the innner and outer wings at the level of rib 12, which is the rib just outboard of the engines.
The 'sample' you're looking at in that diagram has been "cut away"
between two spars. The strengtheners are on the spars themselves, so they don't show up here.
CJ