Just been looking through minibus fcom.
Stallspeed vs1g for A319 at 60T 1+F is about 112kts at 0 pressure altitude
The minimum V2 speed for take-off limited by VMU/VMCA is 128kts.
Minimum VR is a conservative 113kts.
Stallspeed vs1g for A319 at 60T conf 3 is about 106kts at 0 pressure altitude
The minimum V2 speed for take-off limited by VMU/VMCA is 119kts.
Minimum VR is a conservative 113kts
Can't find any exact VMU values unfortunately. But obviously VR is limited by VMU, so I guess the higher V2 limit must come from VMCA.
Anyway I have the idea these values are all not that far apart. Certainly not as comfortable as mustafagander claims:
For a normal conf 1+f takeoff, a 112kts Vs1g would dictate a V2 of at least 112 x 1.13= 126kts
Yet the minimum V2 for VMU/VMCA is 128kts. (but VR is ok at 113kts)
For conf 3 both are 119kts
Last edited by 737Jock; 13th April 2014 at 16:44.