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Fadec Or EEC On DC-10-30?  
User currently offlineMD11Fanatic From United States of America, joined Oct 2006, 81 posts, RR: 0
Posted (7 years 8 months 2 weeks 5 days 9 hours ago) and read 6641 times:

Is there a FADEC or EEC system that controls the CF6-50C2 engines on a DC-10-30 or is it an entirely mechanical process?

[Edited 2006-11-11 01:51:35]

7 replies: All unread, jump to last
 
User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2543 posts, RR: 24
Reply 1, posted (7 years 8 months 2 weeks 5 days 9 hours ago) and read 6636 times:

The CF6-50C2 uses a hydro-mechanical fuel control unit. No EEC or FADEC.


The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlineCosmicCruiser From United States of America, joined Feb 2005, 2255 posts, RR: 15
Reply 2, posted (7 years 8 months 2 weeks 5 days 9 hours ago) and read 6636 times:

No there's no fadec or eec on the dc-10-10 or -30

User currently offlineDeltaGuy From , joined Dec 1969, posts, RR:
Reply 3, posted (7 years 8 months 2 weeks 5 days 9 hours ago) and read 6626 times:

Most aircraft of this vintage, as jetlaged said, used a hydro-mechanical fuel control unit. The EEC didn't find it's way into engines till later.

On the engine I work on (P&W F100-220), there is a DEEC (Digital Electronic Engine Control), but on previous models there was an EEC. In either model, a hydro-mechanical fuel control is used for backup in secondary mode (loss of all electrical power). I'm sure other engines of newer design also incorporate such similar backups.

DeltaGuy


User currently offlineF14D4ever From United States of America, joined May 2005, 319 posts, RR: 4
Reply 4, posted (7 years 8 months 2 weeks 4 days 21 hours ago) and read 6567 times:

EEC is a Pratt term; GE use FADEC exclusively (at least on the commercial engine side) to designate their digital electronic engine controls.

FADEC was not available on the CF6 series until the advent of the -80C2 variant. CF6 models equipped with FADEC are explicitly designated with an F suffix: CF6-80C2D1F, for example, is a FADEC-equipped engine with a rating plug for the MD-11.



"He is risen, as He said."
User currently offlineTristarSteve From Sweden, joined Nov 2005, 3977 posts, RR: 34
Reply 5, posted (7 years 8 months 2 weeks 4 days 19 hours ago) and read 6547 times:

Quoting F14D4ever (Reply 4):
EEC is a Pratt term; GE use FADEC exclusively (at least on the commercial engine side) to designate their digital electronic engine controls.

EEC Electronic engine control
FADEC Full authority digital engine control.

The RB211-535E and RB211-524G/H both have EEC. As far as fuel control goes they control the whole works elecronically. But both have another means of airflow contol. The -535 has a separate electrical airflow contoller (sorry cant remember its name!), and the -524G/H have a totally analogue system.
When RR moved on to the Trent, they added airflow control to the EEC and it became a FADEC.

Quoting DeltaGuy (Reply 3):
In either model, a hydro-mechanical fuel control is used for backup in secondary mode (loss of all electrical power). I'm sure other engines of newer design also incorporate such similar backups.

No, the Trent engines do not have a backup mechanical fuel control. They do have back up electrical supplies.


User currently offlineIFIXCF6 From United States of America, joined Sep 2004, 108 posts, RR: 0
Reply 6, posted (7 years 8 months 2 weeks 4 days 16 hours ago) and read 6516 times:

"EEC" is not just P&W, as GE90's have an EEC. The CF6-80C2D1F (and all CF6-80C2xxF's) have an "ECU" as the black (actually grey) box. FADEC is the system, and EEC or ECU is the box. -80C2's that do not have an "F" suffix, as explained prior, are not FADEC, and do not have an ECU. They do have a "Power Management Control", which refines the MEC. But it is not "Full Authority", thus not FADEC.

So, having drifted well off course of the original post, no the -50's of the DC10-30 are not EECed, ECUed, PMCed, or FADEC. Cables and rigging only! I hope this helps!

Mike


User currently offlineF14D4ever From United States of America, joined May 2005, 319 posts, RR: 4
Reply 7, posted (7 years 8 months 1 week 5 days 17 hours ago) and read 6364 times:

Quoting IFIXCF6 (Reply 6):
"EEC" is not just P&W, as GE90's have an EEC.

Interesting. I stand corrected.

Thanks.



"He is risen, as He said."
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