Question for the Motor Heads

[ARM505]

Again, I must ask/clarify:

In the following situation - constant everything (ie altitude, throttle setting, mixture setting, airspeed etc), a change in RPM via the prop control lever will result in (and I have tried both the A2A model and CLOD in similar density alts/airspeeds, for what it's worth):

a) a slight decrease in indicated boost (ie the A2A model Spit)

b) an increase in indicated boost (ie the CLOD model)

One is correct, the other not. So....which is it?

[Sutts]

Originally Posted by ARM505

Again, I must ask/clarify:

In the following situation - constant everything (ie altitude, throttle setting, mixture setting, airspeed etc), a change in RPM via the prop control lever will result in (and I have tried both the A2A model and CLOD in similar density alts/airspeeds, for what it's worth):

a) a slight decrease in indicated boost (ie the A2A model Spit)

b) an increase in indicated boost (ie the CLOD model)

One is correct, the other not. So....which is it?

You haven't said whether you're increasing or decreasing RPM with the prop control.

Increased RPM.....lower boost
Reduced RPM....higher boost

[ATAG_Dutch]

Originally Posted by Sutts

You haven't said whether you're increasing or decreasing RPM with the prop control.

Increased RPM.....lower boost
Reduced RPM....higher boost

He must be reducing rpm as the CoD model would show an increase.

[Sutts]

Originally Posted by Dutch_851

He must be reducing rpm as the CoD model would show an increase.

Sounds like CoD is modelled correctly then, thanks.

[ARM505]

Originally Posted by Sutts

You haven't said whether you're increasing or decreasing RPM with the prop control.

I'll just quote my original post again quickly since it somehow didn't get through....I'll use the exact same wording since I just can't put it any other way :

Originally Posted by ARM505

...a change in RPM via the prop control lever will result in...

And here's the question, since I am indeed asking a question:

Originally Posted by ARM505

One is correct, the other not. So....which is it?

ie which is correct, the A2A model, or the CLOD model, since they show the exact opposite result?

[Sutts]

Originally Posted by ARM505

I'll just quote my original post again quickly since it somehow didn't get through....I'll use the exact same wording since I just can't put it any other way :



And here's the question, since I am indeed asking a question:



ie which is correct, the A2A model, or the CLOD model, since they show the exact opposite result?

Still don't get it I'm afraid....you just say a change. A change UP or a change DOWN in RPM??