Vp - What does it mean

[Butter side-up]

I was in the cockpit of a Dash 8 the other day and on the Take Off and Landing cribsheet (weight v performance) there was mention of Vp. Does anyone know what this is? Presumably something to do with the propellers - but what exactly does it mean?

Thanks in advance.

[Fred Elliot]

..... used to be a DHC-8 captain......never heard of it.

Only time I've come across 'VP' as an acronym, it meant 'variable pitch', as in propellors.

Having said that, the props are set from max (1200) to flight (900) in the after T/O check and vice-versa prior to landing.






That's a nice piece of brisket, that, Ashley.


:rolleyes:

[Butter side-up]

Thanks for you input.

The way it was written (capital V, lower case p) definitely led me to believe that it was a specific speed. The aircraft in question was an ex SAS one - maybe their operating procedures have something unique?

Any other thoughts from anyone?

Cheers.

[Fokker-Jock]

Vp is the pattern speed, or minimum speed with stall protection up to 30 degrees bank angle.

I currently fly the Dash8-Q400 and the speeds from our speed booklet in our company is probably not reqognised anywhere else.

Vp = Minimum speed (followed by a flap setting) stall protection
up to 30 degrees bank
Vref = Minimum speed (followed by a flap setting) stall protection
up to 5 degrees bank (Threshold speed 1,3 x Vs0)

[Butter side-up]

Focker Jock

Thanks very much for your reply - nice to get to the bottom of this. All the best.