Huey Throttle 'Idle-Stop' simulation... - ED Forums
 


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Old 05-24-2015, 07:56 PM   #1
DSPALLASVI
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Location: US Virgin Islands
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Default Huey Throttle 'Idle-Stop' simulation...

After some '.lua' scratching and tweaking, found I can simulate the Huey's 'Idle-Stop' on the throttle control.
As is mentioned in Griffin's RL Huey manual, just posted by iFoxRomeo (http://forums.eagle.ru/showthread.php?t=142452&page=6),
the 'idle-stop' prevents inadvertent throttle closure.

For the DCS Sim I am using a RL collective, with true mechanical 'idle-stop' indent, and have now set some triggers to shut fuel-flow off when the throttle is below the 'idle-stop' setting...

Am using the actual sim's throttle readings to "catch the bottom part" of the throttle's travel, thus simulating it being in the 'idle-stop' range.

Monitoring the Engine RPM also, so as not to have fuel flow shut off when starting with throttle below 'idle-stop' setting.
Note: Noticed that every time I tried to start with the throttle 'down against the 'idle-stop', the EGT would overshoot the safe limits, flames would be coming out of the exhaust and the 'Ignition System' breaker would trip every time! *

Also am monitoring the Governor 'Emergency / Auto' switch.
When switch is in 'Emergency' setting, the throttle being in the 'idle-stop' range does not close the fuel flow.
Don't know if the latter works like that in real life, but thought it might come in handy when trying to control RPM manually.

Have attached a mission file ('idle-stop' proper triggers set) with Huey sitting at ramp, ready to start.
Once running, it can be shut down by simply closing the throttle... all the way... This of course after a proper two-minute cool down period

* = would like to hear from RL pilots what the proper starting sequence is regarding throttle settings...
Attached Thumbnails
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Name:	Cockpit - Throttle argument.jpg
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ID:	117891   Click image for larger version

Name:	Throttle Idle Stop Description.jpg
Views:	201
Size:	119.3 KB
ID:	117892  
Attached Files
File Type: miz Working Throttle Idle Stop (throttle range evaluated).miz (5.8 KB, 91 views)
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Old 05-24-2015, 08:36 PM   #2
iFoxRomeo
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Quote:
Originally Posted by DSPALLASVI View Post
Monitoring the Engine RPM also, so as not to have fuel flow shut off when starting with throttle below 'idle-stop' setting.
Note: Noticed that every time I tried to start with the throttle 'down against the 'idle-stop', the EGT would overshoot the safe limits, flames would be coming out of the exhaust and the 'Ignition System' breaker would trip every time! *

* = would like to hear from RL pilots what the proper starting sequence is regarding throttle settings...
Open the throttle completely
Then roll back to idle stop.
Check throttle is caught by the idle stop.
Press idle stop-release and close the throttle.
You´ve checked the throttle travel range and idle stop.
Now open it again completely.
Roll back to idle stop.
Press idle stop-release and roll back the throttle a few millimeters, just below idle stop. Release the idle stop-release button.

This way you can shut down the engine if the battery/gpu fails during or after start up.

Now you can start the engine and it should stay within the limits unless something else is broken.


Quote:
Originally Posted by DSPALLASVI View Post
Also am monitoring the Governor 'Emergency / Auto' switch.
When switch is in 'Emergency' setting, the throttle being in the 'idle-stop' range does not close the fuel flow.
Don't know if the latter works like that in real life, but thought it might come in handy when trying to control RPM manually.
...
If the GOV switch is set to EMER you only operate the throttle between full open and idle stop, but never below idle stop.

Fox
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