NASA already is learning about distributed electric propulsion from a unique low-cost testbed, as it completes high-power static tests ahead of low-speed taxi trials leading to high-speed runs on the dry lakebed at Edwards AFB, California, in January. As an initial step in the agency’s proposed plan to fly an X-plane distributed-propulsion demonstrator, the Hybrid Electric Integrated Systems Testbed (Heist) is a truck-mounted rig built to enable NASA to ground-test a full-scale wing ...


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