Unexplained SA342M engine fail

Unexplained SA342M engine fail . After engine fail, I did attempt to autorotate. Not good. But I have no explanation for engine fail.

Also, I might as well byatch and moan about uselessness of Track playback. All it can do is play fwd. No frame advance or retreat.Not exactly ACMI.

Track attached

SA342M_engineFail.trk

Here.. See if you spot the reason for your engine fail. This recording is from your track, I adjusted the view to highlight what to look out for while flying :joystick:

Poor engine </3

Cooked it surprised though you should be very aware of that transmission and T4 situation from the Huey.

Great find Agent_Wolf. :thumbup:

Here.. See if you spot the reason for your engine fail. This recording is from your track, I adjusted the view to highlight what to look out for while flying :joystick:

That would explain it. Good find and feedback Wolfie!

So did I overtorque the transmission? Oversped engine? Is that it? How in the bloody hades, did I do that with lightly loaded helo, in normal fwd flight?

You were pushing the toque hard and T4 temp looked high, don't forget like the Huey engine damage is accumulative.

<edit>

The little red LED kinda says broken.

My question is the amount of torque for IAS was rather high perhaps you didn't notice prior damage.

OK. Thank you. Guess I am never to stupid or too smart to learn something new. Not certain, how I end up with overtemp and overtorque condition on empty helo in fwd flight, with collective at 50%.

I think you will find if you over toque the transmission you get into a situation that you seem to need more collective to maintain speed so toque goes up like a vicious circle.

Manual PP 74

When you reach 100%, the red lamp becomes steady. After 8-12 seconds the engine will break. Having the red light steady must lead the pilot to push forward the collective, in order to reduce the torque.

Manual section 2.1

Unfortunately, on the SA-342M1 Viviane version, the rotor blades choice allows a more important take-off mass but decreases the Vne to 280km/h, and the helicopter will hardly reach a maximal forward flight speed of 180 to 200km/h.

And you were doing a goodly 180 to 200Kph,.. :)

This happens to me too, in the game options you can turn the engine failures off,, but they used different wording, probably because they used crappy translation software. When my engine breaks, and i am not pushing it, it just breaks... I see the engine lights on but since I don't think there is a buzzer, I usually don't see any warning. It just blows and that's it.

the amount of torque you can use depends on outside temp, altitude and load. so as a rule I never go above 90%

but in some conditions 90% is to high.

it tells you in the manual.

know your operating limits.