# Talk:Aspect ratio (aeronautics)

(Redirected from Talk:Aspect ratio (wing))
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## Removed from Aspect Ratio

In aviation, the aspect ratio of aircraft tapered wings is found by dividing the square of the wing span {b} by the total wing area (S):

AR = b2/S

If the wing has a constant chord, the aspect ratio is the result of dividing the wingspan (b) by the value of the chord (c):

AR = b/c

Similarly, if the value of the mean geometric chord is known, the aspect ratio is the result of dividing the wingspan by the value of the mean geometric chord:

AR = b/cmean

(Material is posted for review or incorporation and may be deleted after period of review.) Stephen Charles Thompson (talk) 07:40, 5 July 2008 (UTC)

## (other)

Should there be an entire paragraph devoted to the flight patterns of migratory birds? A sentence or two should suffice.

I removed the paragraph (and the associated external reference) since it was also almost totally wrong. I don't see V-formation flying in migratory birds as too relevant to aspect ratio. 58.96.71.120 22:10, 2 December 2007 (UTC)

I removed this section, added by an anon contributor:

Drag: an aircraft wing works by employing lift. Lift is created by causing the air to take a longer path across the top of the wing. This creates lower pressure above the wings than below the wings, moving the aircraft upwards. The longer the winds, the more drag is created by the wings, slowing down the aircraft. However, in low aspect-ratio wings, the air simply travels from under the wing to above the wing along the sides. This causes turbulence, which slows the plain down more than the drag did. The XF5U fighter used an inovative method to solve this problem.

This is wrong in so many ways. First the explanation of lift is false. See lift (force). Second, while a bigger wing will produce more drag than a smaller one in absolute terms, it's the L/D RATIO that matters. Higher aspect ratios always have better L/D ratios, therefore citing drag as a disadvantage is wrong. Third, the explanation of turbulence is couched in wooly language without any scientific rigour, and fails to get to the heart of the matter, which in any case is covered admirably elsewhere - notably at induced drag. Fourth, there are some bizarre spelling mistakes. Fifth, the XF5U may or may not be relevant but this passage doesn't even begin to explain why. The anon contributor would do well to read up on the full extent of the aerodynamics coverage on WP (which is extensive) before adding ad-hoc and badly thought-through passages like this one. Sorry to sound so harsh but I also refer you to my views about anon contributors in general. Graham 03:46, 30 August 2005 (UTC)

I was the anon user who added that paragraph. All information there was based on the History Channel program Secret Allied Aircraft of World War II, which aired 8/29/05, at 5:00pm EST. The importance of the overall lowering of drag, while raising the ratio is important because the XF5U utalized this principle along with propellers at the edge of its wings to allow for the lowest drag ratio possible. I am by no means a scientist, and understand very little about aircraft, aerodynamics, drag, or life (apparently). I direct the person that removed by paragraph to the "Bernoulli's principle" section of the lift article he linked to. That was what I was trying to state in my definition of lift.
In my opinion, the increase in overall drag created by low aspect ratio wings, and how this is properly utilized by the XF5U should be included somewhere in the article. However, since I will invariably explain it wrong, it would be appreciated if someone else would explain it correctly and simply. Thank you. Gogf 22:14, 30 August 2005 (UTC)