SafeNotAnOption Profile picture
Dec 13 7 tweets 2 min read Twitter logo Read on Twitter
This makes no sense, on multiple levels.

First, there is no relationship between the learning period and NASA "certification." If private astronauts imagine there is, they will be disabused of the notion as part of informed consent.
Second, no space flight is "safe," whether for NASA or private astronauts. In fact, nothing is "safe"; there are no guarantees of safety this side of the dirt. Someone wrote a book about that.
Third, this statement implies a different level of risk acceptance for NASA astronauts and private ones, which is true, but for NASA astronauts it's driven by Congressional nancy boys, rather than by the astronauts themselves.
Private astronauts have their own individual risk acceptance, and for them, it's not one-size-fits all. Some will be willing to trade off safety for thrills/prestige/whatever, and that should be their prerogative, not that of the FAA, or especially NASA.
Finally, if Pam wants to express her opinion on the matter, she's entitled to one, but she shouldn't be doing so on behalf of NASA. In my opinion, it is inappropriate for the agency to even have a stated position on the subject of the learning period.
And understand that I like Pam a lot, and think she was a great choice for deputy (in fact, I wish that she'd become administrator instead of Nelson), but I strongly disagree with her about this, if she really said that.

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More from @SafeNotAnOption

Apr 13, 2020
@MarcAndreChart1 @kfacciol @Simberg_Space Oh, I agree. From a safety standpoint, in both design and management, Shuttle was seriously flawed from the beginning. I discuss that in the book. But we can't just say "safety first," or have a one-size-fits-all approach for probability of loss of crew. It depends.
@MarcAndreChart1 @kfacciol @Simberg_Space Let's talk a minute about Apollo 13, and "Failure is not an option" (which Kranz never actually said). Once the LOX tank did a rapid unscheduled disassembly, mission control had no choice, except to do everything possible to get the crew back alive.
@MarcAndreChart1 @kfacciol @Simberg_Space In that circumstance, "failure is not an option" is a good attitude to have.

But when you're planning a mission, or deciding to launch, "Failure is not an option" is a recipe for inaction, and caution, and failure by not performing the mission.
Read 9 tweets
Aug 12, 2019
Some thoughts on the USAF launch competition.

First, since people are saying that Blue Origin should demonstrate the ability to develop an orbital rocket, it's fair to say that so should ULA. They're flying vehicles developed by other companies over two decades ago.
Arguably, only two teams with recent orbital launcher development experience are SpaceX and NGIS (by acquiring Orbital ATK). Vulcan and New Glenn both currently remain paper rockets. At this point in time, SpaceX has the most experienced launch-development team on the planet.
And while NGIS does have the Antares experience, that won't necessarily apply to their new vehicle. Even if it was a good idea, no one has successfully developed an orbital launcher based on a large segmented solid rocket. We know that Ares I had teething issues.
Read 9 tweets

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