Cold and dark, cold weather : Alarm C.AERO

[gillouf1]

Hello,

I have a problem with "cold and dark" start in cold weather : I have the alarm C.AERO during the INS alignment. It happens only in cold weather (-10°C)...

Any solution to turn it off ? Is it a bug ? Or it's because the Mirage can't operate in very cold climate ?

Thk.

 

@+

C.AERO.trk

Edited August 29 by gillouf1

[Bremspropeller]

I've had that before as well. Make sure you're putting the Anemo-switch on, as soon as you're started up, so it can start removing the ice.

Seems like DCS wants to ice up your probes on startup really quick or it doesn't account for your probes being guarded. I have taken off with unreliable airspeed (same message) and the probe heater burned through the ice during climb.

We were flying with a Mirage 2000 in the formation and he crashed on take-off, most probably because his probe was iced up as well and hence his FBW got all confused...

[gillouf1]

Sadly, it changes nothing :

I put ANEMO ON as soon as the ground power is ON, but during INS alignment ANEMO lights ON with the altimeter flagged...

No problem with hot start...

@+

C.AERO Caucasus.trk

[gillouf1]

 

Am I the only one having this problem and I miss something (I'd like to know what)?

@+ 

[grim_reaper68]

Hi just tested it and could reproduce it. But I had the EMP and DIR alarms too. C AERO doesn't have to do with Pitot or static probe (ANEMO alarm), but with the ADC (Air Data Computer).

Here the part of the AERGES doc 

Failure lights
- ANEMO (PITOT) amber failure light: Indicates a failure of the left total probe or static port heating, or that the probe heater (ANEMO) switch is off. The incidence probe and the right total probe do not have heating failure indication.
- C.AERO (ADC) amber failure light:
o Indicates a failure of the air data computer.
o The autopilot disengages or cannot be engaged.
o The flying aid gains get frozen, in particular:
 The sock-cones and the ARTHUR remain in the last position
 The following may be lost or operate untimely:
· A/B oversboost
· Overspeed
· Limit warning light
· Slaved altimeter
· Combat high-lift devices

But in my case, after starting the engine, C AERO disappeared after 1 or 2 minutes and I could reset the EMP and DIR. So in my mind, it could comes from a too cold equipment.

Here my track, where you can see the C AERO light extinguish .

C.AERO.Grim.trk

Just made a second test in the same conditions as you -10°C, and worked fine.

C.AERO.Grim-10.trk

Edited Sunday at 07:38 PM by grim_reaper68

[Kerosene]

In cold weather, you can manually activate the heating of the systems to speed up their commissioning.

Monitor the thermometer needle. This may take a few minutes.

[grim_reaper68]

In fact, as the temperature needle begins to move, the C AERO disappeared.

[Kerosene]

The F1's systems must be at the right temperature to function properly.

I think AERGES did a fantastic job with this aircraft.