Blackbird Sims / Milviz Forum Archive

Dear MilViz,

I read the posts that you are not allowed to release any of the documents you have on performance, however how are we supposed to fly the P180 without *ANY* kind of data?
Push the thrust levers all the way forward until the red lights come on, pull them back half an inch and hope for the best?

I totally understand you are not allowed to share any official documentation, however please be so kind to at least give us some sort of guidance.

For instance: What's the min and max V speeds for the lowest and the highest weight?
Which Prop/Powersettings are we looking at roughly for takeoff, climb, cruise, descent, landing and go around?
What's the lower Vref, what's the highest?

I'm not looking for any original manufacturer charts and stuff, all I want is some guidance as to which settings I need for the different phases of flight during standart conditions and weights.
That's essential stuff for piloting any airplane...

Not exactly what you are looking for but will get you started.

I am flying it same as the 350i. I am sure I am are way off, but at least gets me somewhere.

https://contentzone.eurocontrol.int/air ... ?ICAO=P180&

This one has a few charts

https://images.app.goo.gl/yCRyJk9D5bjMJxtv8

Thanks Sergio, those tables are a starting point to work from.
I've seen the Euroscontrol database.

However they don't say which powersettings are used for adchieve those numbers.
Can you tell me the standart takeoff/climb/max range and best econ cruise settings?

Take Off
Condition Levers full forward
Throttle: Thin arrow to 685, Fat arrow to 775

Climb power I maintain about same readings. As you climb you will push the throttle more. I climb at 160 knts and that gives me about 1500 - 2000 fpm

Once at altitude, pull the condition levers to 1600 and adjust power to 90 - 95%

Emi wrote: ↑

Tue Mar 23, 2021 5:02 pm

Can you tell me the standart takeoff/climb/max range and best econ cruise settings?

Hi,

Basic operations are as follows:

Take Off
Always with flaps MID. Condition Levers full forward (1800 RPM) Torque ~ 90 -92 % or lower depending on ITT (Max 830 C). VR at about 105 Kias, V2 about 120.

Climb
Flaps UP when passing 140; aircraft pitchs up because of fw effect, so trim down a bit to compensate. Once reaching climb speed (160-180 KIAS) select FLC all way up to cruise. Ref Mach for climb is ~ 0.45/0.50. Climb Torque depends on max ITT; in ISA conditions it can be as high as 100 % up to 26-28,000 ft, but normally won't go above 95 %. Condition Levers full forward (1800 RPM)

Cruise
In ISA conditions or similar, Torque ~ 85 % at FL300 and 75 % at FL350, keeping ITT ~ 800-810 C (engine works a bit hotter that the KA340).Condition Levers full forward (1800 RPM).

Descent
Usually in VNAV PATH mode, otherwise VS according to speed/altitude restrictions. FLC is rarely used, but can be engaged once the aircraft is descending at a stable speed.Condition Levers full forward (1800 RPM).

Approach
Normal Vref with Flaps DN is 120 KIAS, increasing to 140 KIAS for Flaps UP. Condition Levers full forward (1800 RPM).

Tomas

Thank you very much, this helps a lot!