NASA Early Stage Innovations
80HQTR19NOA01-19ESI-B2
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=315718
 Notices of Intent (strongly encouraged) are due by May 29, 2019.
Proposals due on or before June 26, 2019, 5 pm Eastern.

The National Aeronautics and Space Administration (NASA) Headquarters has released a solicitation, titled Early Stage Innovations (ESI), as an appendix to the Space Technology Mission Directorate (STMD) umbrella NASA Research Announcement (NRA) titled "Space Technology Research, Development, Demonstration, and Infusion 2019 (SpaceTech-REDDI-2019), on May 8, 2019. The solicitation is available by opening the NSPIRES homepage at http://nspires.nasaprs.com/ by selecting "Solicitations," then selecting "Open Solicitations," and, finally, selecting "Early Stage Innovations (ESI)." 

The Appendix exclusively seeks proposals that are responsive to one of the six topics: 

- Rotating Detonation Rocket Engine Concept Development
- Chemical Heat Integrated Power Systems
- Rocket Plume-Surface Interaction Prediction Advancements 
- Machine Learning/Deep Learning Tools for Protecting Astronauts from Solar Energetic Particle Hazards 
- Next Generation Durability and Damage Tolerance Methodologies
- Integration of Cryogenic Fluid Two Phase Numerical Modeling Techniques