To clarify,
An IR detector was setup on the climb out path of a major airport by the NTSB, and the hottest part of the aircrafts were the a/c packs themselves(not the outflows) directly underneath the CWT.
I have done some checking and found that the air leaving the overbleed ducts is at about 400 F and the max cont. exhaust gas temp is a huge 1625 F. That is not including any cooling due to fan wash.
So that means that the a/c packs have to produce a greater IR sig than the engine exhausts - sounds improbable to me.
Anyone shed any light on this ?
: DD :
: DD :