Sure sounds like a Ram Air Turbine to me!
In other news:
Thanks to Kiltonge for finding this, which gives us a possible trap weight for the F/A-XX of 60,000lbs and 20-25knots wind over deck (in tropical conditions).
I'm still going to assume ~55k trap weight for F/A-XX, because I'm assuming it'll have a higher stall speed than 100 knots, which means a higher landing speed.
A 55k trap weight with ~12,000lbs of weapons (4x LRASM plus 2x AMRAAM-weight AAMs) means an aircraft empty weight of about 40,000lbs to have 3,000lbs of fuel onboard (more than the F-111B's planned 2400lbs of fuel edit: at recovery).
And a 40,000lb empty weight suggests an MTOW of 80,000lbs. 80-55=25. 28,000lbs of fuel total, which is 5000lbs more fuel than the F-111B.
What's the cruise fuel burn for an F110 engine?