Realy great pics CammNut, especialy the one showing the evolution.
FB-22-1
Its really the one that answers best the original ATF requirements dated somewhat before 1981. Definitely a Air-to-Air and a Strike model merged. Being able to carry even the GBU-37 internally is awesome tactical advantage. However it would have been the most expensive one, due to both widening and lengthtening all 3 fuzelage sections which is by far the most expensive way to add capability. This aircraft featured would not have featured significant range improvement which has become the #1 top priority requirement of the USAF since Afghanistan. However it will probably retain most of the maneuvering envelope and speed capabilities.
My guess is that is a configuration from dates to the period 1995-2001,It could have been a fallback configuration should the USAF decide that the basic F-22 was now sufficiently multirole and being able to carry significant A2G stores internally. A really great find if it is genuine.
FB-22-2
That one is definitely the one which Bill Sweetman based his Popular Mechanics article about the Raptor as a Bomber. We can already see the emphasis on the A2G mission at the expence of the maneuverability. Spurred probably from the experience in Afganistan in 2001. LM have desided than widening the fuselage drives the cost excessively. Also as the FB-22-2 version is considered as replacements for the F-15E/F-117 only, it placed greater emphasis on the range, and payload but the Supercruise speed is kept the same. This aircraft is analogous to the FB-23 RTA submission by Northrop. Development cost is moderate.
FB-22-3
When the FB-22 concept was first revealed, LM talked about several configuration that answered different requirements. This one is from the same time as the FB-22-2 but it pointed the FB-22 development in a new direction. Additional Speed was traded for more range and it kept the cost down by keeping the fuselage of the aircraft the same. Only the wings are totally new. I believe this is the version referred to have the Mach 1.5 dash capabilities. The engine nozzles however should be F135 like as seen in the desktop model picture.
Development cost is low.
FB-22-4
As the USAF refined its new Bomber requirements, it became it became obvious that additionl range and payload was required if the FB-22 can meet them. I believe this version first introduced the concept of the stealthy external wing pod which in my opinion is only thing that will see light some day. Development cost is still kept low
USAF officials have confirmed that if the FB-22 is someday developed it will not be as part of the new long range strike platform.
Regards,
lantinian