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Posted (edited)

I made some tests today to get around the smoke problem that eats up my framerate from time to time and blowed up some trucks for testing settings. To save time I made high g turns to get faster back to the smoke :joystick:

 

The last turn ripped of the rotor blades - but a turn before that happened

- the skhval cam failed / went grey / switched off

- the countermeasures system switched off

- the Ap lights went off

- and a "watch ekran" warning sounded (display showed that the system runs on battery).

- all other systems worked fine

 

In the tracklog was no failure entry and a second later everything worked fine again.

It's not importand but any idea what happend?

 

Loaded weapons where 4x unguided rockets and the gun.

Patch 1.2.3

 

Images and track: klick here

Edited by idenwen
Change in title: +Solved
Posted

Your rotor RPM went down too low so not enough energy generated by the generators, same thing happens when you manually throttle down the engines

Simflyin' since 1985 :smartass:

Posted

Hello idenwen,

Yes that is a common event, the ka50 has issues with power drain when the turbine rpms are low. This would happen during high g loading of the rotors as you can understand. There is little that can be done to prevent this happening but you might try the following,

Ensure unemployed systems that drag down the turbine rpm or draw current are switched off whenever practical eg lights and engine heat-dust protection/rotor heat/piton heats. Every little helps, check that your throttle levers are correctly set ie "auto" or in some circumstances "high".

Fly conservatively (efficiently) whenever possible avoiding extreme draining manouvers. Finally when all those measures fail and your Skhval goes off on a unscheduled holliday..... DONT PANIC .... it will all return to normal service when your aircraft is once again in a steady state. Knowing that this will happen means you are allready doing something about it ... flying with a better understanding of your aircrafts performance limits.

[sIGPIC][/sIGPIC]

Posted

This is not a Ka-50 specific issue. All helicopters with gearbox-mounted generators are subject to this effect. Voltage regulators simply shut off the supply of electricity when the rotor RPM gets too low (or too high) in order to prevent equipment damage due to low (or high) voltage.

Posted
When youre suspecting engine abuse in the near future... turn on the apu :P

 

Doesn't matter, the Ka-50 has no APU-generator.

Good, fast, cheap. Choose any two.

Come let's eat grandpa!

Use punctuation, save lives!

Posted

It's a good way to burn excess fuel to make the chopper lighter, but other than that, it's only good for starting engines.

 

Idenwen, it's worth noting that, when you lose electrical power, the doppler radar takes ~3min to come back online. Until then, you won't have accurate ground speed indication in the HUD. Oh, and if you try to auto-hover, it'll just turn off your AP channels =D

Posted
Idenwen, it's worth noting that, when you lose electrical power, the doppler radar takes ~3min to come back online. Until then, you won't have accurate ground speed indication in the HUD. Oh, and if you try to auto-hover, it'll just turn off your AP channels =D

 

Thanks all for the answers and for the details provided in the last post here.

Hovering after a hard turn & stop isn't that uncommon :)

Posted

The problem isnt the hard turns, just the amount of collective you give during the maneuver. You dont want to give full collective due to the AC gen's problem with low RPM but at the same time not unload the rotor system completely.

Posted
You dont want to give full collective due to the AC gen's problem with low RPM but at the same time not unload the rotor system completely.

 

The BSs rotor system is fully articulated, that means it doesn't care much if it's fully unloaded. The rotor systems that have issues with unloading are older rigid two-bladed systems that are prone to mast bumping.

Good, fast, cheap. Choose any two.

Come let's eat grandpa!

Use punctuation, save lives!

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