Start up procedures checklist?

[Snoopy]

Thanks Paulrkiii and the 25th VFS for the excellent checklists. I've learned a lot.

 

I've got a few more questions about the Chop Check as there's no mention of "Chop" in the manual, no mention of it in the DCSWiki, and Google just brings up pages about valves and pneumatic pumps!

 

1. Why is a Chop Check (steps 18 & 19 in the 25th VFS start up checklist) performed? What is it designed to test for exactly?

 

2. Is the procedure to move the throttle from idle to max and back to idle in 2 seconds, or to move it from idle to max in 2 seconds?

 

3. Why is this test done one engine at a time? Can the check be performed on both engines simultaneously?

 

4. Does the sim ever simulate the situation where there is residual fuel that needs to be purged? Or is this step always unnecessary in this particular sim?

 

Cheers!

 

1) the chop check is to make sure the engine operates as it should.

 

2) It is two seconds to max and back to idle

 

3) One engine at a time yes, theoretically you could do both engines at once but that isn't IAW the Tech Order. One engine is done at a time to make sure you observe all the gauges for that engine.

 

4) Not that I've seen

[latearrival]

Got it. Thank you for taking the time to answer my questions, paulrkiii

[Snoopy]

Got it. Thank you for taking the time to answer my questions, paulrkiii

 

Not a problem!

[Mud]

I've noticed that if you let it motor for too long before going to idle and motor back to normal, that the engine doesn't start then. Is this working as intended? And if so, what is the reason for this?

 

Just to be clear: happens often to my wife when she does the ramp start, I'm not that slow! :)

[sobek]

I've noticed that if you let it motor for too long before going to idle and motor back to normal, that the engine doesn't start then. Is this working as intended? And if so, what is the reason for this?

 

Just to be clear: happens often to my wife when she does the ramp start, I'm not that slow! :)

 

Track?

[sobek]

4) Not that I've seen

 

It is modelled. :)

[Snoopy]

I've noticed that if you let it motor for too long before going to idle and motor back to normal, that the engine doesn't start then. Is this working as intended? And if so, what is the reason for this?

 

Just to be clear: happens often to my wife when she does the ramp start, I'm not that slow! :)

 

Real world there is no time limit to motoring the engines.

[DaWu]

I recommend mine

 

http://forums.eagle.ru/showthread.php?t=69804

[Mud]

Track?

 

Here's a track showing the problem. The actual engine start (IDLE + ENG OPER back to NORM) is at 12h03.

 

ramp.trk