counter rotating system, rudder and wind q

[grandkodiak]

So I thought that counter rotating blade idea illiminated the action/reaction torque spin on the body, removing the need for a dedicated tail rotor system. Now, does the BS use engine exhust down a duct/nozzle system into its tail like civi NOTARs to have yaw control?

 

second, im pretty sure that i still get a good amount of spin into the wind... even when no wind is present... does ground effect cause any sort of directional preferance?

 

lastly, what altitude does ground effect come into play, and what determins it, the total rotor diameter and rate of collective?

[PeterP]

So here comes my "standard Ka-50 newbie reply" :

 

Read also besides the manual this:

DCS: Black Shark...

Technical, Simplified

-Coaxial Rotor Aerodynamics <<< This covers also your question

-Trimming the Ka-50 Black Shark <<<!!!! very important to understand this fully!

-Part 1 - Autopilot <<<this too!

-Part 2 - Autopilot

 

 

Interactive training missions:

KA-50 Black Shark 2 Training missions

 

And when you still have time , read this too:

A Stick and Rudder Man's Guide

to DCS: Black Shark

 

Here is a useful tweak if you using real rudders:

How to unchain the rudder from trim - solution

 

Things you want to have some day too:

 

KA-50 collective: another picture-tale

 

Two MS FFB2 with Cougar Grip

 

 

 

Now there should be (for the next time) no questions left!

Welcome aboard!

Edited August 17, 2012 by PeterP

[Razor5-1]

Ok here goes,

 

Firstly The shark does not have NOTAR . Co-Axial rotors do negate the need for a tail rotor.

Second i'm not quite sure what you mean by "spin into the wind" could you please elaborate.

 

Ground effect comes into play a half a rotor diameter from the ground.

[sobek]

Now, does the BS use engine exhust down a duct/nozzle system into its tail like civi NOTARs to have yaw control?

 

No, the rudder pedals are tied to a twisting rod with a screw thread that changes direction along its length. When the rod is turned, it causes the swashplates of both rotors to move in opposite directions, which in turn upsets the torque balance of the rotor. This exerts a net torque on the helicopter, the direction being dependant on which rotor produces more lift. Additionally, the rudder also actuates the tailfin.

 

second, im pretty sure that i still get a good amount of spin into the wind... even when no wind is present... does ground effect cause any sort of directional preferance?

 

I don't understand, how do you determine the direction of wind if there is none?

 

Edit: This sounds like you are not trimming and therefore fighting the stabilizer.

Edited August 17, 2012 by sobek