"v1..vr...v2..."
Hi, Pilots
I heard that pilot will read out some statement while taking off. something like " V1, VR, V2..."
I guess it should relate to airspeed. But I don't know the indication of such specific speed. and then I have following question:
1. what is the meaning of each airspeed?
2. Why pilot need to read it out while taking off?
3. What is the entire statement which pilot will read out during take off and approach?
Could anyone enlighten me?
I would appreciate for your kind reply.