MASB747 From , joined Dec 1969, posts, RR: Posted (11 years 3 months 2 weeks 5 days 19 hours ago) and read 4342 times:
It´s known that the 8´s aren´t fitted with the classical slats extending from the leading edge but they do have quite a unique kind of wing-lift-devices - it´s called the "slots" and tey are kinda like slats that are built into the wing rather than extending out of it (the white squares visible on the left pic represent these slots in their ´up- position as I couldn´t find a pic which shows them open in the db).Now something just escapes me as for how they are working and affecting the airflow.And how are they activated ? Is there another aircraft that has a similiar design or is this a unique feature of the DC-8 ?
B747skipper From , joined Dec 1969, posts, RR:
Reply 7, posted (11 years 3 months 2 weeks 4 days ago) and read 4071 times:
I flew the DC8-60 and 70 series mostly, also 50s but not often... I remember some old 50s I flew were actually converted 20 or 30s with fan JT3D engines, but all had "slots"... in case these "did not open" for takeoff, it was a "no go" item... for landing, if they failed to open, you had to add an extra 10 (or 15?) knots faster to compensate for the loss of lift... dont remember - sorry...
Let's try to find a Diesel-8 expert here... dont remember much about the aircraft... was quite different from the Boeings in design !!!