Hybrid-Electric Integrated Systems TestbedSystems Integration Engineer Kurt Papathakis inspects a propeller on a modified wing for the Hybrid-Electric Integrated Systems Testbed (HEIST) prior to mounting on a modified truck.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/hybrid-electric-integrated-systems-testbed-4/Copy URL to clipboard> DownloadShareSize1041x793px