Take-Off and Climb Power / Performance Chart

[flanker0ne]

By studying the various takeoff procedures, I read often that the takeoff power or climb power is obtained as a percentage added to the power (5-10% above hover torque) required for hover (Hover Check).

Considering the instrumentation of the Ka-50, what can we use as reference wanting to get a similar effect?

What could be used to compile a Performance Chart?

Rotor Pitch Indicator,

Engine Tachometer, or

Engine Power Indicator, although not easily readable.

[AlphaOneSix]

There are three different ways to calculate "Takeoff Power":

 

1: Easiest way, look at the EPR gauge on the right side, just above the battery switches. If the yellow marks are above the "H", then you're in takeoff power. (Anything below the "K" is Cruise", and anything within the "H" is "Nominal", also called "Limited Cruise"). The engine manuals also say that this is the best way to determine power production at all altitudes and temperatures, since this gauge is corrected for changes in altitude and temperature.

 

2: You can use the Engine RPM gauge to determine your power level, but it varies based on temperature, and the graph is not included in the manual. The graph I have is for a VM series engine, which produces slightly less power than the VMA engines on the Ka-50, so I won't waste you time with it since it won't be correct.

 

3: The last way to gauge engine power output is through the EGT gauge. Of the three methods, this is the least desirable, since it only tells you a max temperature, and you could be into a power setting well below the given temperature. For example, your max indicated EGT for takeoff power is 990. It's not a very helpful number since your engine governors are going to limit the EGT's to 990 anyway, and besides, you could be in takeoff power well below 990 depending on outside air temperature and altitude. Again, this chart is not included in the manual, and since I only have data for a VM series engine, it's not worth looking at.

 

So I guess I just spent a lot of time typing stuff just to end up saying that the nly real way to determine engine power in the sim is to use the EPR gauge, which I think they actually call the Engine Power Indicator gauge. (EPR stands for Engine Pressure Ratio)

[Mikoyan89]

....

What could be used to compile a Performance Chart?

Rotor Pitch Indicator,

Engine Tachometer, or

Engine Power Indicator, although not easily readable.

Hello flanker,If you want to draw a perf. chart and you need some help with tests to collect datas maybe we can collaborate

[flanker0ne]

Hello Mikoyan, I think that will take advantage of your kindness very soon.