SpaceX did not start with detailed blueprints. That means, “here is how much money we will give you to get it done, but we will also pick up the bill on anything that goes over budget.”Funding for SLS development hovers around $1.5 billion per year since 2011. Stand by, and we will answer, “Should NASA just cancel SLS and use Starship and other commercial launchers?” We will see if Artemis is a step in the right direction or not.In my opinion, “orange rocket good enough for now. It failed spectacularly while in testing, as we expected.
To not be confusing, SpaceX calls the entire system Starship.
Each one of them has until 2021 to show exactly how they will get to the Moon. So how is that compared to Starship’s progress?Starship’s progress differs significantly from SLS and Orion. It is just how much it could shoot off to the Moon. Instead, we are just going to focus on the SLS, Orion and the Human Lander Systems. NASA took a prudent route by leaning on existing technologies, partners, and program funding schemes. They were to have it operational by December 31st, 2016! This means changes in decisions do not have nearly as big of a ripple effect as a more traditional method.We will see more hardware fail. Expect this pace of change well into the 20s or even past SN30. Like I talked about in my video about SpaceX’s Raptor engine, a Raptor’s sootless fuel keeps the engine clean and easily reusable. The vehicle must be able to lift the Orion Crew Vehicle since its development was so far along and Congress required NASA to work with existing partners when available.Originally, NASA hoped to roll out a massive rocket quickly and efficiently as their directive from Congress required. The other one is living in the past. Its construction is distinct from the External Tank. It additionally will keep it funded during potentially uncertain times with changing administrations.It is obviously far from being ideal. Plus, the multi-billion dollar CRS and Commercial crew contracts helped SpaceX get to where they are today.NASA does incredible things. This is the price you could presumably buy a launch. NASA is still talking about a first mission with SLS in 2020 but the government Accountability Office has report which indicates that we would be lucky if SLS can launch in 2021.The first flight test of the SLS will feature a configuration for a 70-metric-ton (77-ton) lift capacity and carry an uncrewed Orion spacecraft beyond low-Earth orbit to test the performance of the integrated system.The SpaceX Falcon Heavy can carry 63.8 metric tons (70-tons) to low earth orbit. That is a measurement of the characteristic energy to get to a certain point in space.Falcon Heavy, when in reusable mode, can send about nine tonnes to the Moon. Which to be clear, Artemis is to SLS like Apollo was to the Saturn V. It is the name of the program, not necessarily the rocket or spacecraft.For now, the Gateway is being skipped for the first mission or two that will to carry astronauts on a lunar landing. All that remains is to complete testing and then integrations.There are 16 RS-25D engines. And two drastically unique engineering philosophies.Boeing and NASA built it over the years with seasoned rocket engineers. Or, they can get probes on direct trajectories to our outer solar system without timely gravity assists. Basically, since SpaceX started, there has been talks of doing a “BFR” or “Big F*+#ing Rocket.” Unlike SLS, the actual engineering and development had mostly been behind closed doors since the early days.Going back before SpaceX’s start, propulsion engineer and employee number one, Tom Mueller, had built a “BFR” rocket engine in his high-powered rocket club, Reaction Research Society. This is technically a C3 of -0.99 to be exact.
Some of which we will answer in my next video/article: “Should NASA just cancel SLS and use Starship and/or other commercial launchers for Artemis?” But today I think we need to settle a lot of debates about these two rockets first. Building something as cheap as possible, test it, if it blows up, see what went wrong, make improvements, repeat! NASA conducts performance reviews of their contractors. SpaceX was already working on the next prototype.That was not the only change. We call this translunar injection (TLI), since we are talking about lunar missions here, anyway. However, despite spending over $20 billion (not including another $10 billion for the Orion capsule) there has not been a successful test or a live mission with SLS. Since we are talking about the Moon, let’s only look at how much it costs to send 1 kg to TLI for each of these vehicles.Falcon Heavy can get a kilogram to the Moon for around $10,000 whether in reusable or expendable mode. I adjusted all the numbers you will see into 2020 U.S. dollars.Let’s start off with what I will call the sticker price. Orion also sports a whopping 9 cubic meters of pressurized volume compared to 6.2 cubic meters for Apollo. But again, just like the SRBs, the RS-25D and later the RS-25E variants are expendable on SLS.Just a fun side note, I base those percentage numbers on the original rated thrust of 1.6 MN (375,000 pounds of force) at Sea Level. It is not likely a propulsion engineer is just going to move over to the other rocket NASA is working on.
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