Do pilots rotate on V1 or V2?

Question

I know that V1 is the point of no return, but when do the pilots rotate the aircraft on takeoff?

Answer 1

Seriously people, if you don't know, then shut the hell up.

V1 - takeoff decision speed. Engine failure before V1, abort happens, after V1 you continue flying. V1 has nothing to do with flying ability of the plane, it has to do with runway conditions, weight of airplane and length of runway. If you are operating out of a short, contaminated runway, V1 will be low, if you are operating out of a 14000 ft runway, V1 will be large. In fact V1 could actually be larger than Vr, but because it would be impossible to abort after rotation, it is moved down to Vr.

Vr - rotation speed, easy enough

V2 - takeoff safety speed. Speed held after engine failure. This speed enables the aircraft to climb at the best rate per distance until achieving a safe flap retraction speed.

Once again, to all the idiots on here, if you don't know, don't pull stuff out of your a**

Answer 2

Vr = Rotation speed. Depending on weight, field conditions, or other factors, V1 could be well before Vr, or it could be immediately before Vr. Whatever speed is calculated for Vr for that operation will be the speed that you'll use.

As a pilot, the easiest way to use these speeds is:
1.) Hands come off the throttles at V1 (you're committed to
the TO)
2.) Rotate at Vr.
3.) Climb at V2+10 or +15 or whatever your airline's
profiles require.
4.) Climb at V2 if you've lost an engine at or after V1.

Answer 3

bobbs b is correct

and yes shut up if you don't know this

first thing that happens is 80knots
the pilot calls out 80 knots

then v1
the minimum speed at which an aircraft pilot may continue a takeoff after the failure of the most critical engine

then Vr or rotate
simple takeoff

positive rate of climb gear up

the v2 or Velocity 2
the speed where an aircraft accelerating on a runway must lift-off

Answer 4

V1 is takeoff decision speed. After this speed is passed the aircraft is commited to taking off, even with an engine failure since there is not enough runway left to stop.

V2 is engine failure safety speed. This speed will give the aircraft the best performance in the event of engine failure after takeoff and is a bit faster than V1.

How come some of you ignorants have given me 4 thumbs down for basically the right answer?


Vr or Rotation speed is right after V1 and before V2

Answer 5

Neither!

We rotate at rotation speed, which is above V1 (for obvious reasons) and below V2 (again, the reasons should be obvious)

Answer 6

Vr

And, Comair, check your definition of V2.

Answer 7

Neither; rotation is done at Vr, which is usually between those speeds.

Answer 8

your vspeeds vary depending on the aircraft.. you want to research your aircraft operators manual and discover the best rate of climb... best rate would be best rotation speed...