What is this system/sensor? Underside UK military aircraft

[e8n2]

13 hours ago, Rolls-Royce said:

I know this is an older thread, but when I was in the 100SRW at Davis-Monthan AFB, one of the U-2s I was assigned to was 56-6953, then configured as a two-seat U-2CT. Then as now, that designation didn't follow the regulations. When I asked why (being relatively recently out of technical training), I was told that it was because no pilot would admit to flying a TU-2 (say it out loud and you'll understand). I believe it! 😄

It really should have been a TU-2C, but I guess some idiots might think it was a Russian aircraft.  IIRC, 953 unfortunately went to  RAF Alconbury to be a BDR (Battle Damage Repair) training airframe.  Such a waste of an historic aircraft.

Later,

Dave