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777 Electrical Generation  
User currently offlinejamies80085 From United Kingdom, joined Aug 2008, 154 posts, RR: 0
Posted (4 years 7 months 4 weeks 1 day 20 hours ago) and read 3264 times:

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
5 replies: All unread, jump to last
 
User currently offlineA10WARTHOG From United States of America, joined Jul 2004, 325 posts, RR: 0
Reply 1, posted (4 years 7 months 4 weeks 1 day 20 hours ago) and read 3247 times:

The IDG's and APU are 120 KVA generators. The external power is 90 KVA per stinger.

User currently offlineplanenut767 From United States of America, joined Jun 2009, 66 posts, RR: 0
Reply 2, posted (4 years 7 months 4 weeks 1 day 19 hours ago) and read 3212 times:

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).

User currently offlinejamies80085 From United Kingdom, joined Aug 2008, 154 posts, RR: 0
Reply 3, posted (4 years 7 months 4 weeks 1 day 19 hours ago) and read 3197 times:

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
User currently offlineplanenut767 From United States of America, joined Jun 2009, 66 posts, RR: 0
Reply 4, posted (4 years 7 months 4 weeks 1 day 19 hours ago) and read 3179 times:

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   

User currently offlinejamies80085 From United Kingdom, joined Aug 2008, 154 posts, RR: 0
Reply 5, posted (4 years 7 months 4 weeks 1 day 17 hours ago) and read 3101 times:

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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