>>64194835
>or use an actively cooled window like the mach 10 HEDI KITE did.
>Report on HEDI:
https://apps.dtic.mil/sti/pdfs/ADA210006.pdf

>>HEDI KITE tests:
https://www.youtube.com/watch?v=dmKsO7QJvz8
https://www.youtube.com/watch?v=SVGTZhpsv6U

>Report on HEDI's cryogenically cooled seeker window:
https://apps.dtic.mil/sti/pdfs/ADA386555.pdf

>Cryogenic cooling of the HEDI KITE seeker.
Go to 25 minute mark and watch to see it.
https://www.youtube.com/watch?v=yDCzpAuWM1w