777 engine out
 

Dear all.

I've always been curious, about this matter.

After an engine failure. Does the dead engine accumulate ICE , while the
aircraft is crusing in ICING conditions.?

Everyone knows how bad icing can get in the NOPAC regions, especially when curising at lower levels

IF so, then wouldn't the dead ENG with icing add more drag and futher
add penalty fuel burn to the EO performances?

:bored:

It would as the cowl anti-ice uses bleed from the associated engine only. Cowl anti-ice mainly serves to protect an operating engine from ingestion of ice chunks.

The majority of the ice accumulation would be to the cowl and that's where the greatest effect would be to drag increases. However with the engine dead to begin with a level of drag is already factored into the aircraft engine out performance characteristsics including the engine core face with a seized rotor.

How about a totally iced up N1?

Must be significant drag , if the N1 is not rotating and accumulating ice.

i am just considering the 207mins ETOPS that some carriers use during northern
winter over NOPAC.

:bored:

Again the greatest increase in drag is what's going on with ice on the inlet cowl. There really is no such thing as blocking the fan off as the air will simply spill around the cowl as much as it does with an engine shutdown. Windmill effects are insignificant compared to cowl effects.

Nice, thanks.

Nice to know that i can trust that the 207mins are all catered for.

Jack frost will visit soon, and i'll be cruising around NOPAC.:O

thanks for the info.