Lift Coefficient, 757 Options

[Saltman66]

Given the fact that a 757 has 1,951 sq. ft. of area that occupies its wing surface, and a MGTOW of 255,000 lbs., would I be correct in assuming that upon Vr, ( if the lift coefficient were evenly distributed - which it is not), would each sq. ft. of surface area be subjected to just over 131 lbs. per sq. ft?

[Piltdown Man]

First things first. We are talking about wing loading here. During all stages of flight un-accelerated (1g) flight the lift generated by the wing equals the weight of the aircraft. However, it also produces a little bit more lift to account for the "negative" lift poduced by the tailplane (called trim drag) - required to make the aircraft stable in pitch.

PM

[Aspiring Boeing ...]

First things first. We are talking about wing loading here. During all stages of flight un-accelerated (1g) flight the lift generated by the wing equals the weight of the aircraft. However, it also produces a little bit more lift to account for the "negative" lift poduced by the tailplane (called trim drag) - required to make the aircraft stable in pitch.

PM

hence the usage of pitch trim. Then there is the weight of the plane which decreases as the plane flies, fuel is been burned too, so the number changes all the time, if you measuring it to 1 decimal place then it will change often, in incriments usually, unless there are winds and turbulence about, darn turbulence.


Regards,
Chris

Regards,
Chris

[Kilrah]

What was that supposed to mean?