Though the design never got off the drawing board, it would have been even stealthier than the F-22 Raptor—and here is why.
F-22 Raptor, PDF, Lockheed Martin F 35 Lightning Ii
Finally, the X 44 Manta officially replaces the F 22 Raptor
Fighter Aircrafts
Lockheed Martin F-22 Raptor. The name itself defines air dominance
The Buzz, Page 873
Chris Bolton on X: Lockheed Martin X-44 MANTA (Multi-Axis No-Tail
The Buzz, Page 911
The X-44 MANTA was a Futuristic Version of the F-22 and more
Lockheed Martin X-44 MANTA (Multi-Axis, No-Tail Aircraft): Photos