CLEARANCE: Top Secret
- Jan 22, 2006
- Reaction score
Is that a Shaft driven lift fan in a 1986 concept?the earliest predecessor of F-35 - 1986 Lockheed's SSF (STOVL Supersonic Fighter)
You'd think that...but in the drawing it looks like the rear of the engine is split in the two 'trouser' legs and that's it. The long flattened wing trailing edge exhaust probably does wonders for IR (lots of mixing), but it's really bad for propulsive losses...I wonder how they could claim supersonic speeds with this arrangement.LowObservable said:SSF usually stood for "STOVL Strike Fighter". But surely there is a straight-aft nozzle too on that thing?
IIRC, it was the Naval requirements which led to the conventional configuration. I believe it's about the combination of bring back weight and being able to properly trim the aircraft at low speed for the approach without excessive AOA at the required wind over deck. That's what comes to mind, but someone else here probably remembers the exact reason(s).What drove them to get rid of the delta-ish wing and canard configuration?
Was the X-32 a company designation? How was VTOL managed with the 2D thrust vectoring nozzle? Makes me wish the F-35 had that same nozzle configuration.flateric said:
Pity as it looks beautiful.Unfortunately, Skunk Works destroyed the documentation for the classified GhostHawk concept after the DARPA-sponsored program terminated. When the US Marine Corps and US Air Force launched the Joint Advanced Strike Technology (JAST) program a few years later, Skunk Works was forced design a whole new airframe.
This is about as close to the actual configuration as the public ATF renderings were to the YF-22.Ian33 said:Thought this might interest people - sad to see LM destroyed everything relevant to the project
Well, you have to consider that this design study was just for a stealthy STOVL fighter. It was designed before the JSF requirements were ever released, IIRC. I also believe it was the Navy requirement which forced them to go from a canard to a conventional tail when they began designing for the JSF program.quellish said:This is about as close to the actual configuration as the public ATF renderings were to the YF-22.