Bernie Roehl

I apparently like to make lists. :-)

Here's a list of spaceflight technologies that I would like to see developed in the next few years.

* Cryogenic propellant depots
* Automated rendezvous and docking
* VASIMR (and any other credible alternative)
* Large-scale solar power for SEP (either photovoltaic or solar-thermal)
* Stirling-cycle nuclear reactors for NEP
* Restartable cryogenic engines (e.g. RL-60)
* Methane/O2 engines
* Inflatable aerocapture shells
* Water recycling
* Radiation shielding
* Human-scale centrifuges, tested on ISS
* Lunar ISRU (O2 extraction from lunar regolith)
* Mars ISRU (O2 and CH4 production)

Propulsion tech isn't really my area, but TAN (thrust augmented nozzles) are an interesting idea, and so are linear aerospike engines.