Vr

[Guest metaleye]

I need some help with the correct angle of rotation after V1. Is there an angle that most aircraft rotate at.Thank You.

[Guest]

Bigger jets are usually about 14degrees pitch up to clear initial obstacles and noise abatement, small planes climb on asi, taking whatever vertical speed they can get holding best rate of climb or angle of climb speeds.michael

[Guest metaleye]

Thank Michael for your help. I was using 10 now I have 4 more to "play" with.

[Guest]

As you get a Vr from the reference tables of the aircraft you are flying, you will also get a V2. Standard practise is to initially climb at whatever angle you need to reach V2+10 knots until noise abbatment height is reached, often 1500 feet (above ground) and then reduce angle to allow acceleration to 250. So there is no angle as such, but rather speeds. Angles used will be a factor of your configuration (flaps, weight, N1 used) and climatic conditions.

[Guest]

hi,the normal take-off prcedure for a modern jet airliner:het takes-off with a fixed amount of thrust (TO thrust)at Vr he'll rotate and the flight director will indicate a pitch ton maintain V2+10.so,there's actually that pitch angle,because you're climbing with a fixed thrust,speed is controlled through pitch.at thrust reduction altitude,TO thrust will become climb thrust and at flap acceleration altitude,the pitch will lower to maintain 250 for the fixed climb thrust this time.speed is normally controlled through pitch for climbspeed is controlled with thrust for cruise and descent.hope this helps a bit