jamies80085
Topic Author
Posts: 36
Joined: Sat Aug 30, 2008 6:05 pm

777 Electrical Generation

Mon Mar 29, 2010 5:47 pm

hello, this is my first "tech" post, so please bear with me,
I was looking at power generation the other day, and suddenly thought about the amount of electrical energy aircraft must require to operate their systems, cabin equipment, ovens, IFE ect. Would anyone please be able to help me find out the amount of Electrical power needed on the 777 (as its large) to allow all the systems to operate, and maybe the maximum available power generation from the generators on-board?

kind regards,

Jamie
Cross my heart and hope to fly, f**k right off into the middle of the sky... that would be my ecstasy
 
A10WARTHOG
Posts: 200
Joined: Mon Jul 12, 2004 7:32 am

RE: 777 Electrical Generation

Mon Mar 29, 2010 5:55 pm

The IDG's and APU are 120 KVA generators. The external power is 90 KVA per stinger.
 
planenut767
Posts: 54
Joined: Thu Jun 11, 2009 4:45 pm

RE: 777 Electrical Generation

Mon Mar 29, 2010 6:43 pm

I know on GE90's in addition to the IDG's each engine also has a Backup Generator (BUG) that puts out around somewhere between 60 and 90 kvA (although I believe it is 90 my memory is a little fuzzy right now. And on our 777's at CO the external power needs to be 120 kvA to get everything to function properly, but you also need two power cords for primary and secondary external to operate all of the systems (or at least run the APU with the primary cord plugged in).
 
jamies80085
Topic Author
Posts: 36
Joined: Sat Aug 30, 2008 6:05 pm

RE: 777 Electrical Generation

Mon Mar 29, 2010 6:55 pm

sorry but what does IDG stand for?
thanks
Cross my heart and hope to fly, f**k right off into the middle of the sky... that would be my ecstasy
 
planenut767
Posts: 54
Joined: Thu Jun 11, 2009 4:45 pm

RE: 777 Electrical Generation

Mon Mar 29, 2010 7:04 pm

Integrated Drive Generator (IDG) it's a combination unit that combines the generator with a constant speed drive (CSD) into one unit instead of separately like the did on older aircraft. It's done to save weight overall, but it's hell to remove and install unless you have the right equipment or enough bodies   
 
jamies80085
Topic Author
Posts: 36
Joined: Sat Aug 30, 2008 6:05 pm

RE: 777 Electrical Generation

Mon Mar 29, 2010 9:08 pm

Quoting planenut767 (Reply 4):
Quoting A10WARTHOG (Reply 1):

Thanks for all the info
Cross my heart and hope to fly, f**k right off into the middle of the sky... that would be my ecstasy

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