Silent Eagle is not a full stealth aircraft rather falls in the 4.5 Generation catagory and thus is not a apart of this discussion.... It's agile, and is more stealthier than the previous versions but not fully steath...why is everyone forgetting Slient Eagle and FA-XX?????
On the other hand FA-XX:
It's still on drawing boards and is mere a concept unveiled by the US Navy and no concrete data is available yet.... It's even far far from the prototype stage and as par the US Navy would be a replacement for the Super Hornets after 10-15 years... It's not gonna replace the Raptor of the Lightening but will sure go after the Super Hornet....
One of the key concepts to emerge from Boeing's effort to define a sixth generation fighter aircraft (SGFA) is optional manning.
Recently released drawing of Boeing's evolving F/A-XX SGFA not only features a regular cockpit but a more conventional design, probably because the company is projecting it as a Navy only F/A-18E/F replacement in 10-15 years, not a F-22 or F-35 replacement over a much longer time frame.
Past SGFA concepts have stressed on stealth against a much wider spectrum of radars, visual stealth, combat radius in excess of 1,000 miles, ability to engage threats across the spectrum from terrorists on the run to high value targets and contemporary enemy fighters, ability to collect and process a large amounts of data and even hypersonic speeds.
Boeing's concept appears more evolutionary in nature.
It is likely that technological advances will make the presence of a human in a fighter cockpit redundant by the time F/A-XX is ready for inductions. However, betting on it and hoping to get a nod on the proposal from the Navy, are both not good ideas.
So the folks at Boeing Phantom Works are playing it safe and sensible.
Sixth Generation Fighter Evolution