Lockheed X-44 MANTA: The Stealth Jet That Never Flew 5 min read Air Force North America Lockheed X-44 MANTA: The Stealth Jet That Never Flew Farhan J. Satti (Chief Editor) November 1, 2024 The X-44 MANTA—or “Multi-Axis No-Tail Aircraft”—was a visionary fighter concept jointly developed by Lockheed Martin, NASA, and... Read More Read more about Lockheed X-44 MANTA: The Stealth Jet That Never Flew