ED15-0137-32
Engineers work on a modified wing equipped with electric motors as part of the Hybrid-Electric Integrated Systems Testbed (HEIST), May 1, 2015. From left are Sean Clarke, co-principal investigator for the Scalable Convergent Electric Propulsion Technology Operations Research (SCEPTOR); Kurt Papathakis; and Anthony Cash. Read more.
May 1, 2015
NASA Photo / Tom Tschida