Info on Boeing's wingsweep angle
 

Where can I find info regarding all of Boeing's wingsweep angle? I have tried their website but there isn't any info unlike Airbus'.

http://www.boeing.com/commercial/777...00product.html

http://www.airbus.com/en/aircraftfam...fications.html

are examples

Boeing 707 - 35 degrees

Boeing 727 - ?

Boeing 737 - 25 degrees

Boeing 757 - 25 degrees

Boeing 747 - 37.5 degrees because it's halfway between 35 degrees of the 707 and 40 degrees that the performance guys wanted but engineers didn't.

Boeing 767 - 31.5 degrees

Boeing 777 - ?

For the other two unlisted aircraft a small cheap scale model or an aerial photograph of the planes along with na protractor should provide the answers. I wonder if the 747 series is the most swept of all the airliners flying?

so any body got the figure for the 777's sweep angle?

so any body got the figure for the 777's sweep angle?

The same as the 767.

Close - it's 45° from the wing root to the outboard engines, then it's 37.5°.

777-200 = 37.5
777-300 = 31.6

I thought the 707 was so named because of the 45 degrees of sweep: Tan 45 being 0.707? Maybe a myth?

No, both the 772 and 773 have the same quarter chord sweep of 31.6 deg.

what about the MD11 ?

Pure myth - Albeit a clever one.

MD11 = 35 degrees

727 is 35 Degrees.

Except wing sweep isn't measured from the wing root it's measured from a quarter chord (C/4) which is 37.5°.