V1/V2/VR and density alt
Morning all
Background info.
On the 767 T/O chart has two regions high and low pertaining to density alt and flat rated thrust. The v1/v2 are higher by a few knots, and very rarely throughout the range, v2 is one knot out.
Question.
Why are the high and low speeds different , why is V2 almost unaffected.
I wont attempt to suggest an answer because I don't want to direct the answers in any one direction and although anonymous its embarrassing.
tar