It uses a Horstmann and Quast wing profile on the inner section with underwing tubes to collect high-pressure air which is then expelled through turbulator holes in the bottom wing skin ahead of the flap and aileron hinge line to prevent the separation of the laminar flow.
42.
Though the shell of a cockle may superficially resemble that of a scallop because of the ribs, cockles can be distinguished from scallops morphologically in that cockle shells lack " auricles " ( triangular ear-shaped protrusions near the hinge line ) and scallop shells lack a pallial sinus.
43.
In most families of bivalves, the two valves of the shell are almost perfectly symmetrical with one another along the hinge line, although the placement and shape of the teeth may differ slightly in the left valve and right valve in order for the two valves to articulate properly.
44.
In addition, because aircraft control surfaces are mounted on flexible structures like wings, they are prone to oscillate ( " flutter " ), a dangerous effect which can be cured by bringing the centre of gravity ( c . g . ) of the control surface to the hinge line.
45.
There is no interarea ( that is a flat area bordering the hinge line approximately perpendicular with the rest of the valve ) in either valve . " Atrypa " was a cosmopolitan and occurred from the late Lower Silurian ( Telychian ) to the early Upper Devonian ( Frasnian ).
46.
To get points Q and T on these lines giving this shortest distance, projection 5 is drawn with hinge line H 4, 5 parallel to P 4 R 4, making both P 5 R 5 and S 5 U 5 true views ( any projection of an end view is a true view ).
