Talk:Krueger flap

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Drawings too faint

The text and very narrow lines used in the drawings for "Krueger flap operation" and "Slat operation" are too narrow to display properly, the drawings look faint and washed out. —Preceding unsigned comment added by Dougher (talk • contribs) 05:12, 28 August 2010

That can't be right

The Boeing 720 was equipped with Krueger flaps, and I'm pretty sure that pre-dates the 747 that the text claims here. Maury Markowitz (talk) 19:27, 23 April 2011 (UTC)[reply]

The article isn't claiming that the Krueger flaps on the 747 were the first, or pre-dated those on the 720 or 727. The article is citing page 114 from John W.R. Taylor's book Lore of Flight. It may be that Taylor's book talks only about Krueger flaps on the 747 and omits any reference to such flaps on earlier aircraft types. I don't have immediate access to a copy of Taylor's Lore of Flight so I can't comment further.

If the article is to have a statement about Krueger flaps on the 720 it needs to cite a reliable published source for that statement. Dolphin (t) 03:28, 25 April 2011 (UTC)[reply]

I believe I added that entry and it is being misread, it's just saying that the Kruger flaps of the 747 are made from fibreglass and are forced into a curve in operation, checking the reference shows a wing cross section of the B737, also equipped with them. It would be nice though to find out who Kruger is or was and when they were first used, I would think that would have been some aerodynamic prototype test bed aircraft. They're not confined to airliner types either, the Tornado GR1 has them but they are locked closed as a maintenance nuisance. Nimbus (Cumulus nimbus floats by) 07:49, 25 April 2011 (UTC)[reply]

Indeed, this is a reading issue. Maury Markowitz (talk) 12:11, 27 April 2011 (UTC)[reply]

This does not makese sense to me...

Hi there! The following sentence does not make sense to me: Krueger flaps, hinged at their foremost position that once deployed actually become their trailing edges.. The Krueger flaps are connected under the wing at the leading edge, from where they hinge in or out, whilst the trailing edge is the back of the wing. What don't I understand? Greetings from the Afrikaans Wikipedia! Oesjaar (talk) 15:50, 17 August 2024 (UTC)[reply]

I have removed the confusing part of that text and also the link which related to the trailing edges of wings, not trailing edges of leading edge devices. What it was trying to describe was that Krueger flaps are hinged at the front of the surface when they are retracted, as they extend the flap hangs vertically below the hinge momentarily while travelling to the extended position. When they are fully extended the edge of the flap that was rearmost under the wing when stowed does become the leading edge of the wing.

The second image here might make things clearer, I couldn't find a similar image on Commons. If you hold out a hand, palm down, then make a fist and open out your fingers the fingernails that were initially rearmost are now forwards. Nimbus (Cumulus nimbus floats by) 07:52, 19 August 2024 (UTC)[reply]