Nasawatch has a headline that says “NASA Studies Show Cheaper Alternatives to SLS.” Well, yes, and no. Click on the article and it takes you to Spaceref where we learn that this comes from a press release by Rep. Dana Rohrabacher! Yeah great source. Like we should really care what a politician says.
The Nasa source is supposedly a real fuel depot study, linked here, dated last July 21. This looks like an updated version of some of the same study charts that showed SLS to be the best choice over a year ago. You can actually do things cheaper with fuel depots, but the flip side is you actually have to develop and own some fuel depots, and you still have the logistics and manufacturing turntimes to build more vehicles if you have no SLS. Click the link and read to the end where it talks about the necessary conditions to use depots. (and don’t pay attention to politicians!)Share