V Speeds

[rjdreamer]

Can't seem to find these V-speeds in the book. Any help is much appreciated. Thanks in advance to all.

Vap, Vac, Vfs

 

[avbug]

Vfs = Flap Safety Speed, the speed which provides a margin of safety during flap retraction after takeoff or a go-around

Vap is sometimes expressed as approach speed

Vac; dunno.

Note that none of these are official designations, but are either manufacturer-use or common-use designations. You'll frequently come across speeds designated by a particular manufacturer that aren't used by other aircraft manufacturers. Nothing springs to mind as a good example, but I'm sure others here will have some.

 

[rjdreamer]

V speeds

Avbug,
Thanks for the info. Was just guessing Vap as approach. Had no idea about the others. Tks again.

 

[flydog]

Vac is approach climb

 

[Mickey]

Vap= Approach speed
Vac= Approach climb speed (speed used for second segment climb)
Vfs= Final segment climb speed

 

[Cornelius]

Mickey is right about Vfs, it is final segment climb speed not flap safety speed. The other Vspeeds mentioned are correct.

C-ya

 

[rjdreamer]

V speeds

Thanks to all for the help. Fly safe and enjoy.