phil hunt wrote:

On Sun, 29 Aug 2004 22:11:54 -0400, Kevin Brooks wrote:

The F-22 was to have an IRST, but it was subsequently deleted from the
program.

Do you happen to know why?

Probably because every IR search-and-track mechanism
ever made has failed to be worth its cost.
(Very short range, complicated electronics, sometimes-
dunious operation.)