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question

SWS-AlexVletsas avatar image
SWS-AlexVletsas asked FlyingRaccoon commented

Unit of measurement for prop_reverse_max_vel

The SDK documentation states that this is the propeller velocity when reversing and a default value of 2.
It doesn't specify whether that is tip mach, tip speed in m/s, radial velocity (r/s) or a scalar on RPM. Can this be clarified or maybe show us the formula where this is used?

flightmodel
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Simbol avatar image
Simbol answered

In addition, setting this value, I am not seeing any difference? I tried 0, 1, 12.. etc..

R.

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FlyingRaccoon avatar image
FlyingRaccoon answered FlyingRaccoon commented

Hello @SWS-AlexVletsas and @Simbol

Well, thank you for bringing our attention on this because the doc description is wrong.
This is the maximal backward speed of the aircraft in feet per second, relative to wind, when prop are in reverse mode.
The thrust will progressively be lowered as you get closer to that speed.

It comes from FSX, even tough I can't find any reference to it in older docs; and is supposed to enforce a limit on the aircraft backward speed.

Our apologies for misleading you.
@Nocturne will fix this in the doc.

Regards,
Sylvain

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Hi Sylvain,

If this is a wind relative speed value, why having it in ft/s instead of knots then?

While reviewing and changing the doc, would you maybe consider changing the units to metric as well?

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Hello

We can't change the units for an existing parameter without impacting existing products so I doubt we'll go this way.

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