X-44 Manta: What the New NGAD Fighter Could Eventually Look Like

The Air Force’s—and NASA’s—motivation behind the X-44 Manta project, starting in 1999, was to test the feasibility of full yaw, pitch and roll authority without tailplanes (horizontal or vertical), with attitude control relying purely on 3D thrust vectoring.

X-Planes The National Interest

X-44 Manta: What the New NGAD Fighter Could Eventually Look Like?

USAF/US NAVY 6G Fighter Programs - F/A-XX, F-X, NGAD, PCA, ASFS news, Page 122

Fighter of Discord: Is the Euro-Six Alive?

X-44 MANTA The National Interest

Chinese Espionage? Aircraft 'Strikingly Similar' To US' 6th-Gen Fighter Jet- NGAD, X44 Spotted At China's Test Airfield

Why did the US Navy purchase obsolete F18s when Northrop and Lockheed both had the technology to make advanced stealth fighter aircraft like the F22 Raptor and the YF23 Black Widow?

The National Interest: Blog

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Aviation, Page 5

Lockheed Martin F-22 Raptor - Wikipedia

Douglas Dorsey on LinkedIn: Boeing X-36: The Futuristic Fighter Jet With Incredible Agility - SlashGear

PLAAF 6th Generation Projects

The Air Force Is Only Building One NGAD: Secret Sixth-Gen Fighter

Future fighter program poses key test for US Air Force's design method