I found an interesting file on Nasa’s website:
Using a quantitative workshop process, the following technologies, appropriate to aircraft operational in the N+4 2040 timeframe, were identified: Liquefied Natural Gas (LNG), Hydrogen, fuel cell hybrids, battery electric hybrids,<b> Low Energy Nuclear (LENR)</b>, boundary layer ingestion propulsion…
The first question that comes to mind, of course, is how much of this work is dedicated to LENR and how much is dedicated to the other proposed technologies. I suspect that the report is packaged as it is because LENR lacks scientific respectability. However, if they are smart the work will be focused on the LENR component of their work.
I wonder what their vision of an LENR aircraft is like.