FSUIPC Offset For Climb Power

[activex]

Hi Pete,

Sorry to bother you. I did much searching but could not find an offset in FSUIPC (for FSX) for climb power before take-off, ie. N1 preset power (in %) which will be used on take off when TOGA is active or N1 is depressed, also know as target N1 power.

Is there an offset for this?

Thanks.

Luke

[Pete Dowson]

I did much searching but could not find an offset in FSUIPC (for FSX) for climb power before take-off, ie. N1 preset power (in %) which will be used on take off when TOGA is active or N1 is depressed, also know as target N1 power.

Is there an offset for this?

Not that I know of, at least not by such a name. Is this simulated in the default FSX aircraft at all? I know it is by some add-ons with FMCs (I use Project Magenta which of course includes it).

There are these controls listed for FSX:

AP_N1_REF_INC Increment the autopilot N1 reference.

AP_N1_REF_DEC Decrement the autopilot N1 reference.

AP_N1_REF_SET Sets the autopilot N1 reference.

I don't know if these work, but if they do the autopilot variable which seems to relate to this is the AUTOPILOT RPM HOLD VAR, which is found at offset 07F4.

Regards

Pete

[activex]

Thanks Pete for the reply.

In the default 737 for example when you hit TOGA you will notice in the engine display the value of '0' in green (preset climb power) changes to '90.0'. So I figured, flight sim must have this value available. Anyway, I tried the suggested offset and it did not work (the value never changed).

Regardless, I realize that I don't need to read this value anymore. It is sufficient to read the RPM hold value to determine if N1 is depressed for my TQ interface software. Therefore, don't worry about it.

Thanks again for your pompt response. It is greately appreciated and helpful.

Luke

[Pete Dowson]

In the default 737 for example when you hit TOGA you will notice in the engine display the value of '0' in green (preset climb power) changes to '90.0'. So I figured, flight sim must have this value available. Anyway, I tried the suggested offset and it did not work (the value never changed).

It never changes when you use the controls to change it? That makes no sense.

The value you are talking about is probably set in the AIRCRAFT.CFG file.

Regards

Pete

[activex]

It never changes when you use the controls to change it? That makes no sense.

The value you are talking about is probably set in the AIRCRAFT.CFG file.

Ah, OK. The value only changes from 0 to 90 when you hit toga but it never changes after that. I thought it was coming from the simulator.

[Pete Dowson]

Ah, OK. The value only changes from 0 to 90 when you hit toga but it never changes after that. I thought it was coming from the simulator.

So, 90% N1 is the TO/GA RPM rating for that aircraft. Isn't that what you were after? It probably wouldn't be set BEFORE you press TO/GA because it is an autopilot target setting.

Regards

Pete