Hi: i wonder if there's any program that calculate v1 , vr and v2 of a specific flight and aircraft giving the weight and type of airplane in a flight !! i want to use it with fspassenger when i start a flight it gives me to put in what are the v1 ,vr and v2 ! but i don't know what to put !

Try TOPCAT

Try TOPCAT

Thank you so much !! that's exactly what i was looking for !!