Is there an easy way to raise the barber pole (max speed). I know it would be not realistic but i have raised select values in the cfg (thrust scalar and prop) to 1.10

 

in some weather situations i am getting a overspeed warning. Most of the time it is perfect.

Morning Flighto,

I dont know if you can change Vne, but typically what I do is slow to Va if penetrating weather.

Cheers,

Gmac

I guess the barber pole marks the VMO, but I think you would have to work on the gauge code to move it to another value. It's moving on the Carenado, right? So there's a curve defined somewhere.

 

On the VA, this value must not necessarily mark the speed to use for gusty weather and things. The manoeuvring speed is the speed at which pilot induced manoeuvres (due to moving the flight controls) reach the structural limits with the acceleration involved. So the travel and effectiveness of the controls will lead to that limit, depending on the setup therefore the plane and its design.

 

The rough or turbulent air penetration speed sets a mark for external forces moving and accelerating the plane. This is also dependant of the design of course, but don't takes into account how much force the pilot can induce with the controls.

 

Now I'm not saying that slowing down to VA is wrong, but there should be some planes out there with two different speeds defined. The VA and the one for 'just' penetrating rough air. It could be that the King Air is one of them while the slow folks in some C172 may only see a VA in their docs.

In the C90B, turbulent air penetration speed is 161 KIAS, while maneuvering speed is 169 KIAS.

It's moving on the Carenado, right? So there's a curve defined somewhere.

Yes! And also yes there must be a logarithmic formula somewhere. The barber pole is related to the indication of calibrated or indicated airspeed (CAS or IAS). Indicated airspeed is affected by altitude via temperature and pressure. If you use an E6B flight calculator wheel you can play the "wheel" with what-if with variables to see the effect of calibrated airspeed (CAS), pressure altitude (PA), and outside temperature (OAT or IAT) on true airspeed TAS, You can also work CAS and PA with TAS and work backward to see how CAS, along with PA and OAY drives TAS calculations. It would not be a matter of a simple .cfg edit.

And also yes there must be a logarithmic formula somewhere. ..

It would not be a matter of a simple .cfg edit.

Spot on. Hence my note on the gauge code. If there is anything defined for the King Air, it's somewhere in there and would allow altering the pointer's position. Aren't the Carenado folks on some Super King Air too?

 

Thanks to Kurt for those speed values by the way.

The Carenado C90 does have an incorrect Barber Pole. I did some quick and dirty figures and since the MMO is .46, then at FL210 on a ISA +0 day the Barber Pole should be at about 205 KTS. At FL260 it should have fallen to 185 KTS.

 

This is why the Blackhawk conversions for the C90 dont have to change any airspeed limitations. The higher temp limits on the conversion allows the engine to make rated power much higher than the old engines, pushing the True Airspeeds much higher while not exceeding the MMO.

 

The Carenado C90's Barber Pole calibration is not accurate, and would not allow you to go any faster.

 

The Barber Pole has nothing to do with Va or Max Turbulent Air Penitration speed.

 

Of course the Carenado C90 already has the conversion built in because FSX doesn't drop the ITT as you climb like the RW C90. I assume thats why they have the pole limit the airspeed at a lower value, so it has the same max cruise as the RW airplane.

 

I wish I knew how to fiddle with this, anyone have any suggestions?

Okay, Duh.

 

I figured it out....I've been tweaking my planes for years, should've been able to do this. I kept missing the Maximum Mach in the reference speed section of the .cfg. It was set at .4...I changed it to .46 and now the pole is spot on.