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Posted

Awesome release guys !

 

But come on ED ! You forgot the blade twist on the Ka-50 as you did in the Hind ... you did a great job on the Apache though.

 

Must be pretty easy to fix

 

Thanks

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Posted

I don't know the exact value, but any blade always have to have a twist, except some smaller tail rotors as they needto provide thrust in both directions.

 

But sure they have the maintenance and technical manuals where they can get the info.

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Posted
On 2/21/2023 at 10:03 PM, Hueyman said:

I don't know the exact value, but any blade always have to have a twist, except some smaller tail rotors as they needto provide thrust in both directions.

 

But sure they have the maintenance and technical manuals where they can get the info.

Well for example Mi-24 only has 3 degrees twist. Barely noticeable 

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  • 6 months later...
Posted
On 10/26/2023 at 2:09 PM, orbiter28 said:

In the instrument of the ka-50 in the cookpit, you have the rotor blade angle. Can it help ?

That is rotor pitch, not wash out/twist where the pitch of the blade changes along its length

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Posted (edited)
On 10/26/2023 at 4:09 PM, orbiter28 said:

In the instrument of the ka-50 in the cockpit, you have the rotor blade angle. Can it help ?

twist in a rotor blade or a propeller blade is the entire blade twisting along its axis via the shank due to drag created from the created thrust. the leading edge of the blade tends to thrust up or forward (or aft if it has thrust reversers) increasing the blades angle of attack in and of itself.

Edited by Hammer1-1

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Posted
35 minutes ago, Hammer1-1 said:

twist in a rotor blade or a propeller blade is the entire blade twisting along its axis via the shank due to drag created from the created thrust. the leading edge of the blade tends to thrust up or forward (or aft if it has thrust reversers) increasing the blades angle of attack in and of itself.

This is not why rotor blades have a twist. Like an airplane's wings, rotor blades produce lift across the entire length of the airfoil; however unlike the wings on airplanes, the relative airspeed across the length of the rotor blade is not uniform due to the different rotational circumference. The outer tips produce more lift since they are operating in higher airflow velocities than the inboard portions near the rotor blade root. This is why rotor blades are designed with a blade twist. This creates a higher angle of incidence for the inner portions of the airfoil, allowing the inboard portions to generate more lift. This twist distributes the lifting force more uniformly across the rotor blade span, reduces internal blade stress, and increases the blade loading near the inboard section of the blade.

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