B747 Wing
Thread Starter
Join Date: Nov 2005
Location: North America
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
B747 Wing
Question for any B747 Drivers.
Did Boeing use the Krueger Flap instead of a slats on the leading edge of the wing because the B747 wing is to thick to effectively use slats?
Thank you for the info.
Did Boeing use the Krueger Flap instead of a slats on the leading edge of the wing because the B747 wing is to thick to effectively use slats?
Thank you for the info.
Join Date: May 2004
Location: 3.5 from TD
Age: 47
Posts: 1,042
Likes: 0
Received 0 Likes
on
0 Posts
Actually, I think you meant it is too "thin" to use the conventional slats as seen on other airplanes. The 400's wing is very thin. It looks razor sharp when you look at it from the front (as opposed to slower planes like the 75 or 76).
Keep in mind that the 400's MMo is .90, and boeing took it well past that during certification. They were able to achieve that through the highly sweptback thin wing design.
I don't know if the classic wing is also as thin as the 400, but it seems to me to be thicker when looked at from head on.
Keep in mind that the 400's MMo is .90, and boeing took it well past that during certification. They were able to achieve that through the highly sweptback thin wing design.
I don't know if the classic wing is also as thin as the 400, but it seems to me to be thicker when looked at from head on.
My understanding is that it uses less efficient Kruger flaps inboard and slotted flaps outboard. The slotted flaps continue to work at a higher angle of attack.
This helps to "engineer out" the nose pitch up during a stall with a swept wing. ie: assists in wingroot stalling first.
Picture says a 1000 words
This helps to "engineer out" the nose pitch up during a stall with a swept wing. ie: assists in wingroot stalling first.
Picture says a 1000 words
