except f18 it basically has no channel loss (only 0.6% or 51kgf)
1 Like
yeah but gaijin seems to kinda make up channel loss percentages and all f15s have a weirdly high ~20-25% where most are 10-15%
6 Likes
Isn’t it a straight shot to the engines?
idk, that isnt the only cause of channel losses though because they can be caused by intake not being large enough for engines ideal airflow but ive not seen anything suggesting that that is a big factor on f15
Opened up Eagle intakes are huge
I know, thats why I think its weird that f15 channel losses are so high
1 Like
Thanks for replying everyone
Gaijin’s source is they saw it in a dream
3 Likes
Well. That’s very gaijin of them
This, IRL channel loss is a simple calc of the airflow required vs the inlet size and turbine intake size.
Gaijin is fully arbitrary in their choices with some engines like the TF34, which have literally no channel to have channel loss on, still suffering somehow.
2 Likes
And what should i make out of this?
That there are many factors that contribute to installed thrust (what Gaijin calls “channel loss” for some reason)
1 Like
Mhm. And are these accurate for the F-15?
They affect all jet engines
yes we understand that, we just dont know where their numbers are and why they gave f15s higher than average channel losses
2 Likes
1 Like
It could be the manual provides data for installed thrust, which is where they got that number from. If not, a source would still be needed that disproves it.
ive looked through the publicly available f15e manual and I didnt see it
1 Like
Da yis, the authority on jet engine performance, any company in the Middle East.
Very funny that for some reason they think nozzles change on aircraft engines since the late 1970s, that stopped being a thing long ago since nozzles are included in nearly every single jet turbine that exists today, even civilian ducted turbofans.