Not Simple, Not Soon

...and not safe. Nice catch by Jon Goff that no one else seems to have picked up on:

Basically, unless this source is bogus, or I'm completely misreading things, it's saying that even NASA admits that their odds of losing a crew or a mission using the Constellation architecture are far worse then they had originally claimed. In fact, at least for ISS missions, we're talking almost an order of magnitude worse. For ISS, they're claiming a LOC (probability of losing the crew on any given flight) of 1 in 231, with a LOM (loss of mission) of 1 in 19! If I'm reading this right, that means they expect right now that about 5% of missions to the space station will end up not making it to the station. For lunar missions, the LOC number is 1 in 170, and the LOM number is 1 in 9! That means of every multi-billion dollar mission, they've got an almost 11% chance of it being a failure. While some of these numbers have been improving, others have been getting worse.

In other words, it appears that NASA is admitting that the Ares-1 is not going to be any safer than an EELV/EELV derived launcher would've been, and in fact may be less reliable.

I've never drunk the koolaid that Ares/Orion was going to be more safe than Shuttle (or any previous system). Part of the problem is that (particularly with all of the vibration issues) they're being forced to put systems in that introduce new failure modes. The other is that in their determination to have a crew escape system (as I've mentioned before), they are adding hazards on a nominal mission.

There is only one way to get a safe launch system. We have to build vehicles that we can fly repeatedly, develop operational experience, and wring the bugs out of, just as we've done with every other type of transportation to date. When every flight is a first flight that has to fully perform, you're always going to have a high risk of problems. Unfortunately, NASA decided to do Apollo again instead of solve the space transportation problem.

And along those lines, I should say that I fully agree with Jon:

Quite frankly, I'd almost rather see a gap than try filling it with a kludge like keeping the shuttle flying. The fundamental problem is that even though "commercial" companies like Boeing and LM and Orbital (and hopefully SpaceX if they can get their act together) have been providing the majority of US spacelift for the past two decades, there is no commercial supplier of manned orbital spaceflight in the US. That's the bigger problem, IMO than the fact that NASA can't access a space station that it really doesn't have much use for.

I'd rather see more focus on how NASA and DoD can help encourage and grow a strong and thriving commercial spaceflight (manned and unmanned) sector than how NASA can fix its broken internal spaceflight problems. Once the US actually gets to the point where it has a thriving manned orbital spaceflight sector, there won't be any gaps again in the future. A strong commercial spaceflight sector with a weak NASA is still a lot better than a strong NASA and a weak commercial spaceflight sector.

Unfortunately, absent a real crisis, the politics seem determined to not encourage that to happen. And the ISS crisis, if it is perceived as one, is likely to cause a panic that still won't cause it to happen, though it may still result in something better than ESAS (not that we could do much worse).