Category Archives: Space

Doesn’t Look Like Apollo On Steroids

There was an interesting comment over at Rockets’n’Such this past weekend (number 16, since I can’t link individual comments):

There is no rational technical reason that ARES I need be built. It has no special capability above what already exists and is inferior in most aspects to the Atlas and Delta fleets. The already known vibration shock and thermal environments on Atlas/Delta as well as higher overall performance will also enable more rapid convergence on the Orion vehicle design which is trapped in an endless loop of redesigns due to the inadequacy of the ARES I. This should allow a more rapid transition to first flight and eliminates the need for pointless show and tell flight demonstrations. The LAS can be grossly simplified, propulsion systems drastically downsized, onboard systems enhanced and system capability expanded to address near term needs without absurd design compromises.

This is an important point. Most people don’t realize how many of the problems of Ares/Orion are synergistic: when you’re developing two new systems that have to interoperate, design issues from one have an impact on the other. Weight growth in Orion requires additional performance in the Ares, vibration problems in Ares imply a need for mitigation measures in the Orion that result in more weight, etc.

Yes, von Braun solved this in Apollo. How?

First, he had an essentially unlimited budget, something that NASA knew would not be the case before they started initial concepts. Second, he didn’t believe estimates of CSM mass provided by Houston, and built a huge amount of margin into the design of the Saturn V, a luxury that wasn’t available to the Ares concept, given the (arbitrary) decision to base it on an existing (sort of) first stage. As it happened, he ended up needing all of it.

One could see an attempt by NASA to fix this early on, when they went from the four to five segment version of the SRB, making the supposedly “off-the-shelf” first stage an essentially new vehicle (hence the unexpected resonance issues with the longer organ pipe and deeper tones/lower frequencies). As the commenter noted, going with an existing and flown vehicle that is a known quantity (e.g., EELV) confines the development issues to the Orion itself, vastly simplifying the process and reducing program cost and schedule risk. Also, if more performance is needed, there is already a good and well-understood conceptual history at ULA for growth versions, which are much less problematic with liquids than solids.

The wholesale modifications to the CX 39 systems can be halted or delayed until ARES V demands it. Given the lack of real scientific motivation for going to the moon and the near complete lack of tools for long term habitation this would seem to be delayed for at least a decade. Effectively this means the retirement of obsolete crawlers, pads, recovery systems and decaying infrastructure with a significant reduction in ongoing maintenance costs. The development of the J2, ARES I upperstage, 5 segment solid, new avionics as well as vibration suppression can also be halted. This is worth billions in savings and has no near-term impact to flight operations.

In the meantime NASA should learn to nurture the existing space industry by placing realistic contracts for launch services that enable a predictable business environment and encourage private investment beyond the whims of a few billionaires. This alone is a prime task for NASA and one that will challenge them immensely. But with industry as a full team member and not just a half-assed wrench turner executing sophomoric government designs NASA will gain the leverage to actually consider programs more ambitious than ISS. NASA should be tasked with demonstrating that they can economically support an ISS that does significant science while fixing broken hardware, enhancing capabilities and building international support. If NASA cannot support ISS for a predictable sum over a period of years then they cannot claim the abilities required to support lunar operations.

Most importantly NASA should get back to basic research to produce new technologies and tools that enable US industry to lead. The death of most of these technology programs at the hands of the Emperor was a stupid and shameful act. This work is less costly than giant single-purpose rocket ships and confers far greater economic benefit.

If NASA wants to go to the moon they better start with the crew landing and staying for months. Anything less is a waste of time. They should focus on what tools are required to make this a reality. The ESAS architecture is wholly incapable of meeting this need. But there are solutions that do enable this and at reasonable cost. They just don’t look like Apollo on steroids.

Emphasis mine. One of the problems with having space dominated by a government program is that failure tends to be rewarded, and success punished — if you save money on a program, and don’t use all your budget, it is generally cut the next year. And the excuses for failure generally are that there were insufficient funds, so failed programs get the money that the successful ones saved. Mickey Kaus has some (non-space) related thoughts (scroll a little — his permalinks remain quirky) on the parallels between the failure to prevent the carnage in India, and the failure to educate children here (is he really old enough to have been at Hyannisport when JFK was alive? He must have been a kid).

Anyway, worthwhile reading for the space transition team.

[Early afternoon update]

Paul Spudis (who has a comment on this post) has some nice things to say about ten years of ISS over at Air & Space today:

I contend that ISS is useful for future lunar and planetary exploration. For one thing, building and operating a million-pound spacecraft for over a decade has surely taught us something about spacefaring. One of the most remarkable facts about ISS is that it went from drawing board (more accurately, from computer-aided design bits) to working hardware in space, without numerous prototypes and precursors, and it worked the first time it was turned on. By any standard, that is a remarkable achievement. We have learned how to assemble and operate complex spacecraft in orbit, in many cases solving deployment problems and coaxing balky equipment into operation, as exemplified by the recent experience of Don Pettit and Mike Fincke with the renowned urine conversion machine. Assembling complex machines and making them work in space is a key skill of any spacefaring society. Building and operating ISS over the last decade has taught us much about that skill.

The station could be made even more important and relevant to future operations in space. A key requirement of routine operations in cislunar space is the ability to manage, handle and transfer rocket fuel, particularly the difficult to manage cryogenic liquid oxygen and hydrogen. We could begin to acquire real experience working with these materials at ISS – transfer a quantity of water, crack it into its component hydrogen and oxygen using solar-generated electricity on orbit, and experiment with different methods of handling, conversion and storage of these materials. None of this requires a new module, but some specialized equipment could allow us to experiment with cryogenic fuel in microgravity, mastering a skill of vital importance to future operations in space and on the Moon.

I agree that we learned many useful lessons from ISS (unfortunately, the biggest, and falsest lesson that many seem to have learned is that we should avoid orbital construction and not build space facilities — thinking that is partly responsible for the current flawed heavy-lift ESAS approach). But using the ISS for orbital propellant technology development might potentially conflict with other research on station, if it involves disturbances, or concerns about explosive potential in the event of a mishap. This is worth looking into, but it’s not a simple issue.

It’s Alan Stern Day

First, over at the Gray Lady, he has an editorial on NASA’s cost-overrun culture:

…the Mars Science Laboratory is only the latest symptom of a NASA culture that has lost control of spending. The cost of the James Webb Space Telescope, successor to the storied Hubble, has increased from initial estimates near $1 billion to almost $5 billion. NASA’s next two weather satellites, built for the National Oceanic and Atmospheric Administration, have now inflated to over $3.5 billion each! The list goes on: N.P.P., S.D.O., LISA Pathfinder, Constellation and more. You don’t have to know what the abbreviations and acronyms mean to get it: Our space program is running inefficiently, and without sufficient regard to cost performance. In NASA’s science directorate alone, an internal accounting in 2007 found over $5 billion in increases since 2003.

As Allen Thompson points out in comments over at Space Politics, one could simply substitute names and nyms of (black) programs here, and write exactly the same piece about NRO. But I’m not sure that I’d agree with Dr. Stern’s characterization that it is a NASA culture that has “lost control of spending.” Was there ever any golden age in which the NASA culture had control of spending? After all, the agency was born in the panic of the Cold War, and developed a cost-(plus)-is-no-object mentality from its very beginning. The operative saying during Apollo was “waste anything but time.” Sure, there have been occasional instances of programs coming in under schedule and within budget, but as Dr. Stern points out, the managers of those programs are often punished by having their programs slashed to cover overruns.

No, there is not now, and never has been a cost-conscious culture at NASA, for all the reasons that he describes. And this is the biggest one:

Congress should turn from the self-serving protection of local NASA jobs to an ethic of responsible government that delivers results.

Yes, it should. Well said. And with all the hope and change in the air, I’m sure that this will be the year that it finally happens.

OK, you can all stop laughing now. My sides hurt, too.

Unfortunately, that is not going to happen until space accomplishments become much more nationally important than they currently are, from a political standpoint. For most on the Hill, the NASA budget is first and foremost a jobs program for their states or districts. We can’t even control this kind of pork barrelery on the Defense budget (including NRO), which is actually a real federal responsibility, with lives at stake if we fail. Why should we think that we can fix it for civil space? Only when we are no longer reliant on federal budgets will we start to make serious progress, and get more efficiency in the program.

Speaking of which, Dr. Stern also has a piece in The Space Review on how NASA can make itself more relevant to the populace and its representatives in DC:

The coming new year presents an opportunity to reemphasize the immediate societal and economic returns NASA generates, so that no one asks, “How do space efforts make a tangible difference in my life?”

The new administration could accomplish this by combining NASA’s space exploration portfolio with new and innovative initiatives that address hazards to society, make new applications of space, and foster new industries.

Such new initiatives should include dramatically amplifying our capability to monitor the changing Earth in every form, from climate change to land use to the mitigation of natural disasters. Such an effort should also accelerate much needed innovation in aircraft and airspace system technologies that would save fuel, save travelers time, and regain American leadership in the commercial aerospace sector. And it should take greater responsibility for mitigating the potential hazards associated with solar storms and asteroid impacts.

So, too, a more relevant NASA should be charged to ignite the entrepreneurial human suborbital and orbital spaceflight industry. This nascent commercial enterprise promises to revolutionize how humans use spaceflight and how spaceflight benefits the private sector economy as fundamentally as the advent of satellites affected the communications industry.

As he notes, this needn’t mean a larger NASA budget–just a better-spent one. I particularly like the last graf above, obviously. I don’t agree, though, that it is NASA’s job to monitor the earth. It’s an important job, but it’s not really in NASA’s existing charter, and I fear that if it takes on this responsibility, it will further dilute the efforts on where its focus should be, which is looking outward, not down. It should be left to the agency that is actually responsible for such things (or at least part of them, and expanding its purview wouldn’t be as much of a stretch)–NOAA. If, for administrative reasons, NOAA is viewed as incapable of developing earth-sensing birds (though they couldn’t do much worse than NASA and NRO have recently), NASA could still manage this activity as a “contractor,” but it shouldn’t come out of their budget–it should be funded by Commerce.

Anyway, I think that we could do a lot worse than Dr. Stern as the next NASA administrator. We certainly done a lot worse.

[Early afternoon update]

The NYT piece is being discussed at NASAWatch, where John Mankins has a useful comment.

This Was Inevitable

Talk at NASA about “human rating” an Ares V?

The decision to undertake the study reverses a major decision NASA took after the Space Shuttle Columbia disaster and subsequent accident investigation, that crew and cargo would be launched on separate vehicles. The Ares I, with its solid rocket booster first-stage and the new upper stage powered by the J-2X engine, was selected to orbit the Orion crew exploration vehicle.

That decision never made as much sense as everyone thought it did. It was one of the false lessons “learned” from Shuttle. And, as always, it raises the issue of what “human rating” really means. Generally, given the way the requirements often end up getting waived for NASA’s own vehicles, but not for other players, like the “Visiting Vehicle” rules for ISS, it’s simply an arbitrary barrier to entry for commercial providers.

[Monday morning update]

I should clarify that this discussion is about launch only. For in-space operations, it does make sense to separate passengers from cargo, and it probably makes sense to have robotic freighters as well, due to the long trip times and lack of need to handle emergencies with crew.

Ominous

As Clark notes, this isn’t directly related to space transportation regulation, but you can see it coming:

The proposed regulation, titled the Large Aircraft Security Program, would require owners of those aircraft to obtain permission from TSA to operate their own personal aircraft every time they carry passengers. Additionally, all flight crews would be required to undergo fingerprinting and a background check, all passengers would have to be vetted against the government’s terrorist watch lists, and numerous security requirements would be imposed on airports serving these “large” aircraft. EAA adamantly opposes this regulation and urges all members to respond to TSA…

“…We thank the TSA for agreeing with the many industry group and EAA members’ requests for an extension, providing an additional two months to study and react to the proposal,” said Doug Macnair, EAA vice president of government relations. “This proposal would be an unprecedented restriction on the freedom of movement for private U.S. citizens. It would also, for the first time, require governmental review and authority before a person could operate his/her own personal transportation conveyance.

First they came after the private aircraft pilots, and I said nothing, because I wasn’t a private aircraft pilot.

Talking To Mike

Irene Klotz has an interview with the (hopefully) outgoing NASA administrator:

I would be willing to continue on as administrator under the right circumstances. The circumstances include a recognition of the fact that two successive Congresses — one Republician and one Democrat — have strongly endorsed, hugely endorsed, the path NASA is on: Finish the station, retire the shuttle, return to the moon, establish a base on the moon, look outward to the near-Earth asteroids and on to Mars. That’s the path we’re on. I think it’s the right path.

I think for 35 years since the Nixon administration we’ve been on the wrong path. It took the loss of Columbia and Admiral Gehman’s (Columbia Accident Investigation Board) report highlighting the strategic issues to get us on the right path. We’re there. I personally will not be party to taking us off that path. Someone else may wish to, but I do not.

What Dr. Griffin doesn’t understand is that, in his disastrous architecture choices, and decision to waste money developing a new unneeded launch system, it is he himself who has taken us off that path.

I also have to say that I think that this particular criticism by Keith Cowing is (as is often the case) over the top and ridiculous. It’s perfectly clear what he meant–that with all of the other problems facing the country right now, Shuttle retirement per se isn’t going to be a top priority. But it is an issue that will no doubt be dealt with by the transition team.

Propellant Depot Dreams

Rob Coppinger says that they are in fact, a fantasy (though he doesn’t explain why they require “unobtainium“).

Clark Lindsey ably responds. I think that there are several problems with Rob’s thesis, but don’t have the time to get into it right now. I will agree with him that there is no current market for them. I hope, though, that (by the same standard) he would agree that there was no market for launch vehicles in 1956. So I fail to see the point.

[Late morning update]

Jon Goff dissects Rob’s piece more thoroughly.

As for Jon’s question about when he started thinking about depots, it may have been at Space Access in (I think) 2005, when I gave an impromptu talk on the subject, as a result of my work with Dallas and Boeing on CE&R (work that was completely ignored/rejected when Mike Griffin came in and canned Craig Steidle).

More Thoughts On Destinations

From Henry Spencer:

In its early years, the only form of manned space exploration it favoured was an (international) Mars expedition. All other ideas that involved humans in space were counterproductive and undesirable, to hear the Planetary Society tell it.

This obsession with Mars was a bad idea then, and it’s a bad idea now. However, some of the reasons advanced against it strike me as poor – sufficiently poor that they weaken attempts to argue for a more systematic and balanced space effort.

An exclusive focus on Mars does have one thing going for it. If you believe that any resumption of manned space exploration will inevitably end the way Apollo did, with follow-on programmes cancelled and flight-ready hardware consigned to museums as soon as the programme’s first objective is met, then choosing the most interesting single destination makes sense.

However . . . haven’t we learned anything from doing that once? To me, it makes far more sense to try to build a programme that won’t crash and burn as soon as it scores its first goal. That means systematically building capabilities and infrastructure, and doing first things first even if they aren’t the most exciting parts.

Unfortunately, we don’t seem to have the societal patience necessary to do the unexciting parts, at least if the government is paying for it. Which is why we have to get private industry going ASAP.

[Early afternoon update]

I mentioned yesterday that Paul Spudis wasn’t impressed with Lou Friedman’s thoughts. He’s similarly unimpressed with The Planetary Society’s new roadmap.

[Another update a few minutes later]

Jeff Plescia has been leaving this message in comments at various places (I’ve seen it at NASA Watch and Space Politics]

As a participant in the workshop sponsored by the Planetary Society at Stanford University in February, 2008, I feel obliged to make some comments with respect to what is said in portions of the Planetary Society document “Beyond the Moon A New Roadmap for Human Space Exploration.”

Page 5 contains the statement:
“Among the conclusions of this group is that ‘the purpose of sustained human exploration is to go to Mars and beyond,’ and that a series of intermediate destinations, each with its own intrinsic value, should be established as steps toward that goal. The consensus statements and viewpoints expressed by this group of experts form the basis for the principles and recommendations contained in this document.”

This statement is a blatant and intentionally dishonest misrepresentation of the recommendations and sentiments of the group.

We had extensive discussions about what the conclusion of the workshop might be. While the conclusion reported in the Roadmap was clearly the predisposition of several members of the group, particularly the organizers, it was definitively and clearly not the consensus of the group as a whole. In fact, when these words (or words to the same effect) were suggested, the group clearly indicated to the organizers that they should not be used because they were inaccurate. However, the organizers chose to ignore the group’s wishes at the end of the workshop, at the International Astronautical Congress and in the Roadmap in portraying the results of the workshop. This has occurred despite the fact that members of the group pointed out after the workshop press release that such statements were inappropriate and incorrect.

For what it’s worth. Thanks, Lou.

Maybe it’s like the climate change “consensus,” from which many scientists are now running.