Vac below Vref?

[DanielR]

Hi,

I'm surprised that Vac can be lower than Vref... is that really correct?

 

Best regards,
Daniel

[kecm80]

hahaha, sorry for my useless answer but want just to say that there are thousands of Vspeeds and i think V1 Vr V2 and Vref, and maybe Vref +20, or 10 are all speeds we need to care about.  So a difference by 1 (and of a total of 122) between two speed that should be the same i wouldn't give to much account, maybe some kind of computed approximation. in your case Vac should be 129 as written in papers

 

ps: there are sop's that uses Vref -10 for GA speed (VAC) so i'm really confused about all these speeds

 

Edited February 16, 2022 by kecm80