Jan 8, 2014 · An extremely high-aspect ratio wing takes up a ton of space relative to the rest of the aircraft. In an attempt to offset this, early 777s (which had a larger span than 767s and 747s) were offered with folding wingtips, but nobody bought that option and it got dropped.

Mar 4, 2017 · A higher aspect ratio (given the same wing area) means more wing span and less lift-dependent drag. At the same angle of attack, higher aspect ratio also means more lift (within limits). Lift is produced by deflecting the oncoming stream of air downwards. The more air can be affected, the more efficient lift production becomes.

Feb 5, 2025 · On the other hand, if you want your vertical surface to work well over a high range of sideslips, give it a lower aspect ratio so it will stall later. Since the local angle of attack change of a V-tail with the sideslip angle is reduced by the cosine of the dihedral angle, you can increase its aspect ratio over that of a comparable vertical ...

Jun 5, 2020 · There is no direct relationship with speed and aspect ratio, indeed, high subsonic aircraft such as airliners, that strive for maximum efficiency, are seen with increasingly higher aspect ratios in recent years. Structural strength is the main limitation which continues to challenge engineers today.

Feb 5, 2021 · A higher aspect ratio wing is moving a longer and skinnier package of air compared to a low aspect ratio one of the same area that is moving the same total mass of air. This means that the escape route around the tip is a smaller proportion of the total mass affected, so the overall losses, the amount of leakage, is a smaller part of the ...

Sep 20, 2021 · The larger aspect ratio means the span of the wing increases and hence so does the weight of the structure. So, to carry the same load you need a heavier wing, which will decrease the benefit of the lower drag, or you need to choose different materials (metal -> composite) or construction technique (lightening holes in ribs, for example) for the wing to …

Oct 23, 2021 · A plane with a high aspect ratio will fly straight well but be poor for maneuvering. All optimum speeds will be shifted to higher lift coefficients when compared to a lower aspect ratio airplane, meaning they will be nearer to the airplane's stall speed. Low power-to-weight ratio: The lower drag will reduce the need for installed thrust.

May 2, 2020 · The boundary depends on the type of aircraft. Fighter wings will be called high aspect ratio when the same aspect ratio in a glider wing will still be called low. Generally, values below 5 are low, regardless of aircraft type. With passenger aircraft, the boundary might be around 8. Gliders will only have a high aspect ratio if it surpasses 20.

Feb 13, 2022 · The advantage of a higher aspect ratio wing is that it increases L/D ratios by reducing induced drag, and thus for a given amount of lift, an airliner will incur less drag and burn less fuel. However, this is traded-off against the fact that the wing has to be thicker to counter the increased bending moments from the longer wings.

Oct 2, 2023 · Typically, the reference wing area Sref, span b, and aspect ratio AR are based on somewhat simplified wing forms. The reference wing extends to the aircraft centerline. In the case of the aircraft shown, the reference wing probably matches what you've depicted -- with the exception of the 747.