Fire Extinguish Handle

[TAIPAN_]

I had a funny experience yesterday.

 

I was flying along and my right engine cut off, and I noticed the extinguisher was pulled out for the right engine.

 

I had just moved the mouse curse off the screen so I think I may have clicked the handle by mistake.

 

What I want to know is, what happens when you use the handle? The manual doesn't go into details. I never pushed the extinguish switch so nothing should have been sent to the engine I thought.

 

However the engine had stopped. Does pulling that handle cut off fuel to the engines automatically in preparation for an extinguish?

 

If so, is there a way to get the fuel flow back on again?

 

Cheers

[Eddie]

Does pulling that handle cut off fuel to the engines automatically in preparation for an extinguish?

 

Yep, exactly that.

 

If so, is there a way to get the fuel flow back on again?

 

Just push the cut of handle back in again.

[LostOblivion]

You'll have to perform an aerial restart though. Windmill or with the APU.

[Phuz]

Generally there is a fuel shutoff valve, a hydraulic shutoff valve, and it seems at least in this sim that a bleed air shutoff is also modelled when the handle is pulled.

 

And you are correct, until you have both pulled the handle and THEN chosen a left / right fire bottle selection no extinguishing agent will have been discharged.

[TAIPAN_]

ok thanks.

 

What I did was push the handle back in. Then tried an APU restart and also tried the "motor" switch for that engine to clear it up.

 

In the end I got the engine to restart, but once I started adding throttle it cut out again. Phuz - will all those shutoff valves reverse when pushing the handle back in?

 

 

What mistake do you think I made there?

[Phuz]

ok thanks.

 

What I did was push the handle back in. Then tried an APU restart and also tried the "motor" switch for that engine to clear it up.

 

In the end I got the engine to restart, but once I started adding throttle it cut out again. Phuz - will all those shutoff valves reverse when pushing the handle back in?

 

 

What mistake do you think I made there?

 

Yea any shutoff valves associated with a t-handle are going to toggle open/closed based on the position of the t-handle. So, when you put it back those valves will always return to the "open" position - combat damage/random failures aside.

 

The 'motor' function simply spins the engine using bleed air from another source [opposite engine or apu] while not applying fuel / spark.

 

This is the official windmill procedure included with the sim:

Windmill Restart. This method will use the bleed air from the operating engine to provide the

power to start the affected engine. Using a windmill start will take 6,000 to 8,000 ft to complete

because it requires a steep dive of at least 30-degrees. Given the altitude requirement, this is not an

option when below 10,000 ft AGL. To perform a windmill restart:

1. Place the aircraft in a 30-degree dive.

2. Set the Bleed Air switch to OFF.

3. Set the Crossfeed switch to Crossfeed.

4. Once ITT of affected engine is below 150-c, set both throttles to MAX.

5. Set the Engine Operate switch of the affected engine to IGN.

6. Once engine is operating, move Engine Operate switch back to NORM.

7. Move Crossfeed switch to OFF.

8. Set Bleed Air switch to ON.

 

My guess as to why it cut out on you is a bleed-air misconfiguration. I've actually had engines fail in flight when I shut down the APU in this sim due to bleed-air misconfigurations as well.

Edited July 8, 2011 by Phuz

[Sadist_Cain]

are you sure the engine was actually up and running hot and to speed?

 

as far as I'm aware you need to get the engine up to speed with the motor switch on which will spin the blades up without burning fuel, then flip to normal (or IGN if you're screaming towards the ground at mach 3 with your hair on fire doing a windmill start) to start feeding fuel to the engine and sparking it.

 

this is as I understand it but I'm still learning many systems myself