Rotor blades shattered in flight?

[blackfw190]

Hello everyone,

I've been waiting for this sim for a long time and living it up ever since the release and has gotten pretty proficient at flying and fighting at the same time. My question is why is it...I'm going nicely along in fast forward flight ( such as in the mission "courier") the rotor blades just shattered to pieces and down I go:) What is up with that? With no warning whatsoever? When I exceed max air speed the warning system usually goes on but this is just a brisk cruise with no one shooting at me??? Am I pushing too much forward on the cyclic causing the blades to strike at one another? That seems strange b/c the whole machine seems to be at an equilibrium while at cruise...When I used to fly r/c heli with some machine if you yank the cyclic back too abruptly you can get the blades to actually strike the tail boom! :D but in this state? I cant figure it out...plz help thank you!

[248th_Snake]

It happened to me a few times as well.

[159th_Viper]

Hello everyone,

I've been waiting for this sim for a long time and living it up ever since the release and has gotten pretty proficient at flying and fighting at the same time. My question is why is it...I'm going nicely along in fast forward flight ( such as in the mission "courier") the rotor blades just shattered to pieces and down I go:) What is up with that? With no warning whatsoever? When I exceed max air speed the warning system usually goes on but this is just a brisk cruise with no one shooting at me??? Am I pushing too much forward on the cyclic causing the blades to strike at one another? That seems strange b/c the whole machine seems to be at an equilibrium while at cruise...When I used to fly r/c heli with some machine if you yank the cyclic back too abruptly you can get the blades to actually strike the tail boom! :D but in this state? I cant figure it out...plz help thank you!

 

Lower the collective and Trim, Trim, Trim and again Trim for Speed/Flight.

 

Trim makes for a Happy-go-Lucky yet Deadly Shark. You're stressing the Machine to the point of suicide :)

[sobek]

[...]

 

In high speed the two disks are closer to each other than in a hover because of asymmetric flapping (i assume you know what flapping is, being a r/c helo pilot). This means you must treat the helo with extreme care when at high speeds (no high g, careful on the cyclic and especially careful with right rudder, because the differential torque system brings the blades even closer together when right rudder is applied).

 

You will quickly develop a 6th "kamov sense", meaning that there are some flight regimes that require some precaution, but once you know what to do and especially what not to do, blade clashes wont be much of a problem.

[EtherealN]

You will quickly develop a 6th "kamov sense", meaning that there are some flight regimes that require some precaution, but once you know what to do and especially what not to do, blade clashes wont be much of a problem.

 

Hear hear on Kamov Sense. I've noticed that my evasion techniques and ingress planning has become very much tuned towards allowing escapes that do not force me to get into the risk zones for a blade clash - to the point where I don't really think about it.

 

Well, or at least not too far into the risk zones. When I have spotted a SAM launch and you need to quick as **** get behind that house over there I do end up getting close, but I've noticed a steady progression where I instinctively stay within parameters and nowadays it's really only when doing really stupid things on purpose that I get blade clases.

 

So basically, since it's a sim I'd say for the OP - practice practice practice, and don't be afraid to test the limits. It's a simulator, so you have a whole other freedom to carefully examine what causes you to fall out of the sky that the real guys don't really have. It sometimes is really impressive to do a seriously retarded maneuver and find that the helicopter didn't mind - and then go back and repeat it in a different way and find it failing. At that point, the sensation of having really learned something is massive and very rewarding.

[muamshai]

Don't use full throttle and try not to use rudder extensively if you are say over 250 km/hr

[EtherealN]

Actually, don't use throttle at all. Use collective. :P

 

(Saying, just in case OP has confusion there.)

[Sharkster64]

Just bring yourself up to 250 km/h, then go to your outside view and look at your helicopter from behind. You will see that on the right side of the helicopter, the upper and lower rotors are close together, almost ready to strike. If you bring it up to 300km/h, it looks like they are almost contacting each other. You will also notice on the opposite side, they are further apart. This is due to retreating blade stalls on both rotors. Since they are spinning in opposite directions, the top rotor has more lift on the left side and no lift on the right side. The bottom rotors have more lift on the right side and no lift on the left. This is why the bottom rotor is flexing up towards the top rotor on the right, and the top rotor isn't flexing at all on the right. If you do any sudden maneuvers to the right with rudder at highspeed, it flexes the bottom rotors even higher causing the rotors to strike. That is why they say, avoid harsh manueuvering to the right. Same with collective, too much collective will cause them to strike.:)

Edited April 22, 2009 by Sharkster64

[EinsteinEP]

http://forums.eagle.ru/showthread.php?p=671731&highlight=ghostbusters#post671731

[Sharkster64]

Nice detailed description. :thumbup:

[blackfw190]

Got it! I knew about advancing/retreating blades phenomenon but then I forgot...this is a coaxial rotor design :D

Thanks everyone!

[ghost dog]

thank you, I had the same problem! :thumbup: