Stall behavior is considered the most critical control aspect of the unconventionally shaped blended wing/body, and Boeing and NASA are preparing to test the X-48B BWB research aircraft with revised flight control software that will enable more gradual approaches to the stall. The 21-ft.-span unmanned demonstrator completed its 40th test sortie at NASA’s Dryden Flight Research Center, Edwards AFB, Calif., on Jan. 21. Tests have included initial stalls with fixed leading-edge slats in ...

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