Lockheed Martin X-44 MANTA
The Lockheed Martin X-44 MANTA (Multi-Axis No-Tail Aircraft) was an American conceptual aircraft design by Lockheed Martin that was studied by NASA and the U.S. Air Force. It was intended to test the feasibility of full yaw, pitch and roll authority without tailplanes (horizontal or vertical).
Source: Wikipedia — Lockheed Martin X-44 MANTA (CC BY-SA 4.0)