Originally Posted by
pineteam
And why on heavy weight the V1,Vr V2 speeds are higher on conf 3 versus conf 2 but not on light aircraft?
thank you.
When heavy and with more drag, you are likely to be performance-limited at 2nd segment. V2min is normally way below Vx, so increasing VR/V2 where runway length permits will improve 2nd segment performance.
With light aircraft, you are unlikely to be limited, so V2 will be V2min, which is obviously lower for a configuration with more lift at low speeds (CONF 3).