General Interest New Battery & Flight Technologies for April 2022 by Editor|Published April 20, 2022 The following articles sent in by Jon Graber and Tuan: A lucky Battery Discovery A New Heat Engine
Published November 22, 2023 New Battery & Flight Technologies for Nov 2023 These article sent in by Jon Graber. Just click a pic. Switchblade Flying Car
Published November 22, 2023 Let’s Give Thanks I was going through old pics and came across this one of long time SEFSD member Carl, taken in 2011. It reminded […]