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High-speed blade intersection?


GreyStork

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I was just wondering if this phenomenon presents itself in the dynamic rotor model, and if any of you beta testers have run into this.

 

I know that sudden large applications of rudder may lead to blade intersection as a result of the top rotor experiencing a decrease in load and thus downward flapping, while the bottom rotor load increases, resulting in upward flapping.

 

However, I haven't seen any discussions on blade intersections as a result of retreating blade stall. I imagine that at very high speeds, the retreating blade may stall and cause a sudden downward flapping. This would resulting in loss of lift, which might prompt the pilot to apply more collective, causing an exacerbation of the retreating blade stall coinciding with upward flapping of the advancing blade. On the side where the retreating blade is above the advancing blade, this could lead to intersection.

 

This would be even more of a danger in the case where the pilot applies a sharp collective increase, even at moderate speed, leading to inertial over-flapping (as opposed to sudden retreating blade stall), and perhaps be enough to cause an intersection.

 

So do you risk destroying your own rotor blades if you don't go easy on the collective at high speeds?

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- Study flight sim geek since Falcon 3.0 -

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Thanks, Groove.

 

It would be very interesting to see screenshots, or even movies, of that type of damage modeling. Perhaps that could be the topic of a future producer's note, maybe even in connection with an overview of the electrical power and fuel systems, and how to counteract damage to those. One can hope... ;)

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- Study flight sim geek since Falcon 3.0 -

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It would be very interesting to see screenshots, or even movies, of that type of damage modeling.

 

Actually, we need a movie that consists entirely of Ka-50s smashed to pieces in every possible way that can be imagined, and even in some that cannot. :D

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That sounds like a very good idea actually. At the same time it shows the strengths of the sim's best damage modelling, while at the same time giving players insight as to what they should avoid at all costs.

"Chapter One: Avoid Jets"

"Chapter Two: Avoid Medium- and Long-Range SAMs"

"Chapter Three: Avoid Short-Range SAMS and MANPADS"

"Chapter Four: Don't do this *crunch* or this *grind*"

[sIGPIC][/sIGPIC]

If you fly a perfect Defensive BFM and the bandit does a perfect Offensive...

Someone you know is going to be recieving Insurance money very soon.

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Actually, we need a movie that consists entirely of Ka-50s smashed to pieces in every possible way that can be imagined, and even in some that cannot. :D

 

Well, it might actually be fun to watch a compilation of good old pilot error. Perhaps Glowing Amraam could accommodate us in that area. ;)

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- Study flight sim geek since Falcon 3.0 -

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