Up until FSX / P3D, MSFS has always indexed the prop torque effects to Vs0, so that above that reference speed / AoA, they vanish.

I thought that the "new" FM in MFS would change this, but truth is that any of the aircraft I vly in it still look like totally free from prop torque once above Vs0...

Propwash effects on the tail surfaces, including the sideslip induced by propwash, are now modelled somehow, but torque from the engine / prop are still the old style.

Any mention to this being listed for future updates ?

5 hours ago, jcomm said:

Up until FSX / P3D, MSFS has always indexed the prop torque effects to Vs0, so that above that reference speed / AoA, they vanish.

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Prop torque iooks fine to me. Not sure what you mean by "indexed the prop effect to Vs0". Vs0 is stall speed in landing configuration, hopefully everyone flies above this speed!

27 minutes ago, sd_flyer said:

Prop torque iooks fine to me. Not sure what you mean by "indexed the prop effect to Vs0". Vs0 is stall speed in landing configuration, hopefully everyone flies above this speed!

Yep,

exactly, so it's too low a reference speed for this:

"This is the roll moment due to propeller torque.
- It applies to propeller planes only.
-The roll effect is at its maximum at zero airspeed. It decreases linearly with airspeed (TAS) and becomes zero at flaps_up_stall_speed (TAS) from [reference Speeds] multiplied by 1.5. The effect remains zero above that speed."

Unless otherwise stated ( by ASOBO ), this is still how I see it happening in the new encarnation of MS FS... Yes we now have the prop / slipstream effects alos modeled ( ressurected from fs9, where they could be better fine tuned than in FSX ), or even modeled with more detail, but engine and prop torque on their own are apparently still modeled the old way..."

It actually blends from VS0 to VS1...

Cause really powerful prop aircraft to act like on-raills if you cycle the throttle just above Vs1.

Edited November 11, 20214 yr by jcomm

34 minutes ago, jcomm said:

Yep,

exactly, so it's too low a reference speed for this:

"This is the roll moment due to propeller torque.
- It applies to propeller planes only.
-The roll effect is at its maximum at zero airspeed. It decreases linearly with airspeed (TAS) and becomes zero at flaps_up_stall_speed (TAS) from [reference Speeds] multiplied by 1.5. The effect remains zero above that speed."

Unless otherwise stated ( by ASOBO ), this is still how I see it happening in the new encarnation of MS FS... Yes we now have the prop / slipstream effects alos modeled ( ressurected from fs9, where they could be better fine tuned than in FSX ), or even modeled with more detail, but engine and prop torque on their own are apparently still modeled the old way..."

It actually blends from VS0 to VS1...

Cause really powerful prop aircraft to act like on-raills if you cycle the throttle just above Vs1.

OK, so we have this idea of region of reverse command (diagram below)

 

We mostly experience this when we practice slow speed at higher altitudes (relative to airplane) ! We slow down airplane in landing configuration to something about Vs0+10 and maintain the same altitude. We used to hang on on "stall horn" but FAA change rules and now we not suppose to hear stall horn during slow flight. Any ways, in slow flight due to increased parasite drag and reduced engine performance (altitude and carb heat for older models of 172 for example) even full power is insufficient to maintain or increase speed. So the only way to gain it is to pitch down. That region of reverse command is where all prop factor are their best. So we say in this case "pitch for airspeed power for altitude".

Now if one closes throttle and slow down airplane  to Vs+10 in the same landing configuration no prop effects won't noticeable able  as RPM will hang around 1000-800. 

Last time I tried Asobo C172 in slow flight it was very close to what I experience IRL. 172 is not a beast you would experience torque in full glory ! In contrast, when I practiced slow flight in T-6 I ended up inverted due lack of coordinated flight. Now that when torque would punish lousy pilot LOL I'm very anxious to see what upcoming payware T-6 will look like!  So how one experience  toque depend on airframe and engine ability! 

Indeed sd_flyer, and I do believe an aircraft like a Spitfire with it's powerful engine should really show signs of good engine-induced torque effect at way above Vs1...

Maybe they will fine tune these aspects in future SUs...

Edited November 11, 20214 yr by jcomm

Just now, jcomm said:

Indeed sd_flyer, and I do believe an aircraft like a Spitfire with it's powerful engine should really show signs of ggod engine torque effect at way above Vs1...

Maybe they will fine tune these aspects in future SUs...

Yes I believe it would be! But in this case it's a question for 3rd party developer on how they modeled it