twin otter aft fuel tank
hello firestorm,
good remark about the "holes" of phu & his flapper valves. but i thinks the "holes" makes sense as it ensures a fuel feed to the collector tank(cell 5) from the other cells. assume a straigt & level flight, then all flapper valves are closed. analysing the diagramm of this aft fuel tank, i suppose the collector cell 5, feeds the engines through 2 boosterpumps & associated checkvalves. the boosterpumps, by means of the ejector draw fuel from cell 6 +7+8 into the collector cell 5.
i flew the twin otter in another life(1985) & i agree it's a fascinating experience.
v1 ooops is the best & confirms all above.
kregards,
bm.