# Questions tagged [aspect-ratio]

Use for the aerodynamic aspect ratio

9 questions
Filter by
Sorted by
Tagged with
201 views

### How is the wing area of an airplane determined?

Picture source is from here. Here are wing areas of several airplanes. As we can see the Spitfire, B747-400, and Mirage 2000, their wing area are not rectangular. The line drawn from left side to the ...
• 4,411
51 views

### Literature request for effect of Aspect Ratio and Wing Sweep on critical angle of attack?

So I'm trying to find academic literature detailing how both aspect ratio and taper ratio affect the critical angle attack of an aerofoil - namely for a v. low AR wing (AR<1), and high sweep (~75 ...
• 1,185
569 views

### Comparisons between the A340 and 747-200 wing: sweep angle and span

Here is a picture of the wings of the A340 (launched in the late 1980s) and the Boeing 747-200/400 (launched in the early 1970s / 80s) superimposed upon each other (source: https://www.amazon.com/...
• 944
1k views

### How to calculate sink rate from wing measurements

First of all, sorry to bother you when I am coming from a bird rather than aircraft background. I have two questions that I'm struggling to get an answer for. Firstly, how is sink rate calculated (...
• 141
3k views

### How have engineers managed to increase commercial airliner wing aspect ratios over time?

Over time, the wing aspect ratios of commercial airliners have increased. For evidence ,see the following data: 1980s: Boeing 747-400: 7.91, Boeing 757-200: 8.0 Boeing 767-300: 8.0 Airbus A310: 8.8 ...
• 944
268 views

### Aspect Ratio conceptual estimate

so I know that AR=b^2/S. But let’s say that I don’t know b or S, how can I estimate the optimal AR if I know only this: How many passengers are going to be onboard, cruise velocity (subsonic), ...
641 views

### Does the 737 have a higher aspect ratio than most later 7X7's?

In this video: The Insane Engineering of the 787 there's a chart (at around 10:40 in) which shows that the 737 (which series?) has an aspect ratio of over 9, while the 747, 757, 767 and 777 rise from ...
• 546