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The official bug tracker for the TFDi Design MD-11
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[BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 #263

Closed JeffRichard1958 closed 11 months ago

JeffRichard1958 commented 11 months ago

Describe the bug

Start valve should close at 45%, not 60%, on GE CF6-80

Steps to reproduce

Start the engine and observe the start switch popping back in at 60 percent. It should be 45 percent.

Expected behaviour

Just a Nit-Noid, but we had these engines on our 767, A300-600 and MD-11 aircraft. All had the start valve closing at 45%, not 60 percent. there is a loud "snap" as the MD-11 start switch pops back in. I am attaching the operating manual procedure. Again, not a big one, but in the interest of accuracy.

Evidence

IMG_2192

Simulator

Microsoft Flight Simulator 2020 (MSFS)

Crash

Yes

Phase of flight

Pre-flight

Altitude

o

Agreement

bassplane commented 11 months ago

From the KLM FCOM (GE), the starter should close between 45%-52%. Just as a variation.

Screenshot 2023-11-09 162821

JeffRichard1958 commented 11 months ago

Thank you. As I mentioned, 45% is the number and it's closing at 60%. In addition, the oil should decrease by 2-3 quarts after start. These are definitely nit-noids! I just have around 7000 hours with the GE 6-80. Thanks again. Just an extremely minor detail.

From: bassplane @.> Sent: Thursday, November 9, 2023 10:40 AM To: invernyx/md11-bugs @.> Cc: 017941 @.>; Author @.> Subject: Re: [invernyx/md11-bugs] [BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 (Issue #263)

From the KLM FCOM (GE), the starter should close between 45%-52%. Just as a variation.

[Screenshot 2023-11-09 162821]https://user-images.githubusercontent.com/150367558/281786068-703c5182-cf5c-4442-81e4-78e0b56c1cfc.png

— Reply to this email directly, view it on GitHubhttps://github.com/invernyx/md11-bugs/issues/263#issuecomment-1804069101, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BDOUOVCMCAZUZE64EBDTQSLYDT2NXAVCNFSM6AAAAAA64H5VJCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMBUGA3DSMJQGE. You are receiving this because you authored the thread.Message ID: @.***>

TheFightingRaven commented 11 months ago

Martyn, can you use this feedback?

joon44 commented 11 months ago

It actually works correctly. I just configured the starters to my Stream Deck listening to the "General engine starter:1/2/3" variables with the spad.next and I have images for the starter enabled and disabled and the image on the stream deck switches to disabled exactly at 45%. This means that the starter actually disengages at 45% but the physical switch in the cockpit pops in at 60%.

JeffRichard1958 commented 11 months ago

Thanks Joona, In the real airplane the switch pops in at 45%.

From: joona @.> Sent: Sunday, November 19, 2023 11:56 AM To: invernyx/md11-bugs @.> Cc: 017941 @.>; Author @.> Subject: Re: [invernyx/md11-bugs] [BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 (Issue #263)

It actually works correctly. I just configured the starters to my Stream Deck listening to the "General engine starter:1/2/3" variables with the spad.next and I have images for the starter enabled and disabled and the image on the stream deck switches to disabled exactly at 45%. This means that the starter actually disengages at 45% but the physical switch in the cockpit pops in at 60%.

— Reply to this email directly, view it on GitHubhttps://github.com/invernyx/md11-bugs/issues/263#issuecomment-1817915286, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BDOUOVA4WJDBHXZ3SQBSVUTYFI24ZAVCNFSM6AAAAAA64H5VJCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXHEYTKMRYGY. You are receiving this because you authored the thread.Message ID: @.***>

joon44 commented 11 months ago

Thanks Joona, In the real airplane the switch pops in at 45%. … ____ From: joona @.> Sent: Sunday, November 19, 2023 11:56 AM To: invernyx/md11-bugs @.> Cc: 017941 @.>; Author @.> Subject: Re: [invernyx/md11-bugs] [BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 (Issue #263) It actually works correctly. I just configured the starters to my Stream Deck listening to the "General engine starter:1/2/3" variables with the spad.next and I have images for the starter enabled and disabled and the image on the stream deck switches to disabled exactly at 45%. This means that the starter actually disengages at 45% but the physical switch in the cockpit pops in at 60%. — Reply to this email directly, view it on GitHub<#263 (comment)>, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BDOUOVA4WJDBHXZ3SQBSVUTYFI24ZAVCNFSM6AAAAAA64H5VJCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXHEYTKMRYGY. You are receiving this because you authored the thread.Message ID: @.***>

So they just need to fix the physical switch pop in moment

JeffRichard1958 commented 11 months ago

Exactly, and while I have you here, the oil "gulp" should occur during start. It goes from 22 qts to 18 qts or thereabouts. It returns after shutdown. I wrote that up too. All minor points. You guys are amazing.

From: joona @.> Sent: Sunday, November 19, 2023 12:05 PM To: invernyx/md11-bugs @.> Cc: 017941 @.>; Author @.> Subject: Re: [invernyx/md11-bugs] [BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 (Issue #263)

Thanks Joona, In the real airplane the switch pops in at 45%. … ____ From: joona @.> Sent: Sunday, November 19, 2023 11:56 AM To: invernyx/md11-bugs @.> Cc: 017941 @.>; Author @.> Subject: Re: [invernyx/md11-bugs] [BUG] - Start valve should close at 45%, not 60%, on GE CF6-80 (Issue #263https://github.com/invernyx/md11-bugs/issues/263) It actually works correctly. I just configured the starters to my Stream Deck listening to the "General engine starter:1/2/3" variables with the spad.next and I have images for the starter enabled and disabled and the image on the stream deck switches to disabled exactly at 45%. This means that the starter actually disengages at 45% but the physical switch in the cockpit pops in at 60%. — Reply to this email directly, view it on GitHub<#263 (comment)https://github.com/invernyx/md11-bugs/issues/263#issuecomment-1817915286>, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BDOUOVA4WJDBHXZ3SQBSVUTYFI24ZAVCNFSM6AAAAAA64H5VJCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXHEYTKMRYGY. You are receiving this because you authored the thread.Message ID: @.***>

So they just need to fix the physical switch pop in moment

— Reply to this email directly, view it on GitHubhttps://github.com/invernyx/md11-bugs/issues/263#issuecomment-1817917848, or unsubscribehttps://github.com/notifications/unsubscribe-auth/BDOUOVDKMEIYWTM53QG2UKDYFI36PAVCNFSM6AAAAAA64H5VJCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMJXHEYTOOBUHA. You are receiving this because you authored the thread.Message ID: @.***>