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The X-44 design had a reduced radar signature (due to lack of tail and vertical stabilizers) and was made more efficient by eliminating the tail and rudder surfaces, and instead using thrust vectors to provide yaw, pitch and roll control. [1] The X-44 MANTA design was based on the F-22. The engine and fuselage would be carried over to the X-44.
The resulting X-44A (although apparently unrelated to the previously developed X-44 MANTA) was built in 1999 and first flew in 2001, [1] representing an interim design between the Darkstar and P-175 Polecat. However, Lockheed Martin kept the X-44A under wraps until February 2018. [1] [2] [3] The X-44A successfully tested multiple technologies.
High-speed and high-altitude flight X-1E: Bell USAF, NACA 1955 ... X-44 MANTA: Lockheed Martin USAF, NASA 2000 F-22-based Multi-Axis No-Tail Aircraft thrust vectoring ...
X44 or X-44 may refer to: . Agent X44, 2007 Star Cinema film starring Vhong Navarro as Agent X44 with Mariel Rodriguez in her film debut; Lockheed Martin X-44 MANTA (Multi-Axis No-Tail Aircraft), a conceptual aircraft design by Lockheed Martin that has been studied by NASA and the U.S. Air Force
Lockheed Martin X-44 MANTA: Research, X-Planes, Retired Cancelled Armstrong Flight Research Center: F-22-based Multi-Axis No-Tail Aircraft thrust vectoring testbed. [39] Lockheed Martin X-56 (MUTT) Fixed Wing, UAV Research Platform, X-Planes, Multi-Utility Technology Testbed Retired (1) 2012 Armstrong Flight Research Center
Lockheed's initial concept was a particularly large aircraft called CL-2016, nicknamed "battlecruiser" for its size, that resembled its SR-71/YF-12 with large delta wings and engines mounted in nacelles spaced away from the fuselage and would have had similarly high operating speed and altitude as a missile platform (or "missileer" per Lockheed).
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The Piasecki X-49 "SpeedHawk" is an American four-bladed, twin-engined experimental high-speed compound helicopter developed by Piasecki Aircraft. The X-49A is based on the airframe of a Sikorsky YSH-60F Seahawk , but utilizes Piasecki's proprietary vectored thrust ducted propeller (VTDP) design and includes the addition of lifting wings.