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Mi-8 tail rotor blade angle reversed


Airmage

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The tail rotors upper part turns towards you (clockwise spin, when looking from the left), so it pushes in direction of the tail boom.


Edited by Sid6dot7

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For the air flow to be towards the tail boom, the trail edges of the blades should be towards the boom, and they are not.

 

This pic shows the correct blade angle:

 

https://i.ytimg.com/vi/VmA61GF1RHU/maxresdefault.jpg

 

Same config on this Hind:

 

http://www.militaryaircraft.de/pictures/military/helicopter/Mi-24/ILA2014/Mi-24_7353_ILA2014_0225_800.jpg

 

Anyway, i'm sure this was not always like this, but only after some recent updates, my guess.

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Because with pedals centered blade pitch should not be in "hard left rudder" attitude, as can be seen on the screenshots. Airmage, You're not crazy, looks like indeed they're reversed.

 

One thing that crossed my mind was - maybe tail rotor blades being on some kind of a pitch stop when the heli doesn't run and there's no hydraulic pressure (like in Hamilton Standard airplane props). However, pictures of the real things posted above, show that's not the case.

 

We have to remember, though, that full rotors animations, as in UH-1 module, are still not present in Mi-8, so maybe they'll fix all of it later.

i7 9700K @ stock speed, single GTX1070, 32 gigs of RAM, TH Warthog, MFG Crosswind, Win10.

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Does that help? Maybe the tail rotor animations aren't implemented yet, as they don't seem to change for left/right rudder.

Mi-8_tail_airflow_force.thumb.png.a1abb86a0e61df7f5109e552d5ba3d0b.png


Edited by Sid6dot7

Intel Xeon E3-1240 V2 @ 3.4 Ghz | 12 GB RAM (DDR3-1600) | Nvidia Geforce GTX660 Ti/2GB (Driver Ver. 381.65 ) | ASUS P8Z77-V LE Plus | SB Audigy 2 ZS (kxProject 3552) | Samsung SSD 830 Series (Sys: 64GB, DCS+other: 128GB) | Saitek X52 Pro + TM MFDs | TIR4: Pro (TIR 5.4.1.26786 Software) | Windows 10 Pro (x64, non Anniversary)

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Does that help? Maybe the tail rotor animations aren't implemented yet, as they don't seem to change for left/right rudder.

 

Is this for CW spin from left view?

 

Because if it is, you must recheck your aerodynamics knowledge...sorry.

 

And for implementation, it was done correctly some time ago. I just noticed this flaw recently, i has not always been like this.


Edited by Airmage
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Yes, the blade moves down, so the airflow vector points upwards.

Intel Xeon E3-1240 V2 @ 3.4 Ghz | 12 GB RAM (DDR3-1600) | Nvidia Geforce GTX660 Ti/2GB (Driver Ver. 381.65 ) | ASUS P8Z77-V LE Plus | SB Audigy 2 ZS (kxProject 3552) | Samsung SSD 830 Series (Sys: 64GB, DCS+other: 128GB) | Saitek X52 Pro + TM MFDs | TIR4: Pro (TIR 5.4.1.26786 Software) | Windows 10 Pro (x64, non Anniversary)

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Airmage, chillout, Sid's screen with vectors proves You point - the lift vector is pointing the wrong way.

 

And yes, there's no pitch animation in this module at the moment.

i7 9700K @ stock speed, single GTX1070, 32 gigs of RAM, TH Warthog, MFG Crosswind, Win10.

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Because if it is, you must recheck your aerodynamics knowledge...sorry.

 

Erm the green arrow is the clean airflow hitting the blade and get's redirected away from the tail boom due to blade interaction. Never said you were right nor wrong.


Edited by Sid6dot7

Intel Xeon E3-1240 V2 @ 3.4 Ghz | 12 GB RAM (DDR3-1600) | Nvidia Geforce GTX660 Ti/2GB (Driver Ver. 381.65 ) | ASUS P8Z77-V LE Plus | SB Audigy 2 ZS (kxProject 3552) | Samsung SSD 830 Series (Sys: 64GB, DCS+other: 128GB) | Saitek X52 Pro + TM MFDs | TIR4: Pro (TIR 5.4.1.26786 Software) | Windows 10 Pro (x64, non Anniversary)

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The picture in your original post is what full left pedal looks like. Full left pedal should be just over 6 degrees of pitch. Odd...

 

For reference, centered pedals should be roughly 8 degrees...the other way.

 

The screenshots were made on startup, controls untouched. This issue fustrates me since Mi-8 is my fav module.

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