The Grumman X-29
Between the ’80s and 90s, the U.S. Airforce obtained the Grumman X-29. Its forward-facing wings were made to give it better aerodynamics and a sleek look but made it impossible to fly properly. Even though different advanced agencies designed it, it still had major flaws. A Nasa employee even stated, “It was unflyable — literally — without a digital flight computer onboard, which made corrections to the flight path 40 times a second.”
The Grumman X-29
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