12 of the Weirdest X-Plane Designs
The X-56APhoto: NASA Photo / Jim Ross The X-56A, Multi-Utility Technology Testbed, also known as the MUTT, was a spunky uncrewed aircraft used to test the flexibility of wings and…
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The X-56APhoto: NASA Photo / Jim Ross The X-56A, Multi-Utility Technology Testbed, also known as the MUTT, was a spunky uncrewed aircraft used to test the flexibility of wings and…