Category Archives: Space

Transportation Session

Gary Hudson, chairing session, thanking Robin Snelson and Lee Valentine for reviving the conference series. Sobered by the fact that the last time he chaired a session at a Space Manufacturing Conference was almost three decades ago. He leads off with a discussion of advances in space transportation over the past three decades.

Nothing else matters as much as low-cost, routine and reliable LEO access — once in orbit, halfway to anywhere else.

Biggest challenge not technology. It’s market demand, financing and naive regulation. Don’t need “destinations,” or “heavy lift.” This building was built in pieces weighing less than ten tons at a time. Historically, NASA opposition was a concern, but that is the case no longer. Now it’s Congress.

Space launch expensive because we throw the vehicles away, and we fly them only once (reduces reliability). Don’t fly often enough, don’t climb learning curve, to amortize development costs. Everything has been tried, and nothing has worked. Nowhere close to a breakthrough (in terms of propellant costs becoming significant), because of the standing army. ULA, Orbital and SpaceX have developed “commercial” vehicles, but still haven’t fundamentally reduced cost of access to space.

Problem is the gap in market elasticity. Reducing price doesn’t increase revenue in current region of price. Reducing cost to a thousand or five hundred dollars a pound reduces revenue, because demand doesn’t increase fast enough until price far below that. Incentives are to maintain status quo. Need new markets, near-term “affirmative action” missions from NASA to get us over the hump (ISS resupply, prop depots, debris cleanup, exploration support). Not necessarily inappropriate, since past government policies have put us in this box. Medium term, tourism will provide useful markets, but long term goal must be settlement.

Technical roadblocks: no breakthroughs needed, but risk and cost reduction via NASA tech development can be useful.

Political: end to cafeteria filling, and recognizing role of private sector.

Legal: should be based on sensible engineering and science rather than emotional regulation (example of having to watch for desert tortoises on the runway for Burt’s spaceplanes, but not airplanes).

Financial: question not whether or not we can finance, the issue now is global economic collapse and whether the dollar will be worth anything in three months.

No social breakthroughs needed — we’re ready.

Needed breakthroughs:

Patient risk capital (this is where NASA can help).

Paradigm/Perceptual change — need to fix broken regulatory regime (e.g. ITAR), NASA brother-in-law problem.

Technical — highly reusable engines, innovations such as tethers, which is a “good cheat.”

What we don’t need: scramjets and airbreathers.

RLV technologies neede: active sluid cooling for entry, highly operable engines.

Achievable price goals: $500/lb within five years, $100/lb within ten to fifteen. Assuming RDT&E amortized through public/private partnerships, and that standing army is sized for business, not government pork.

Introducing Dallas Bienhoff of Boeing

Live Blogging Jeff Greason

From his opening remarks for the Space Manfacturing Conference.

Didn’t want to be in the rocket business, just wanted a ride. Believed all the claims about the Space Shuttle, and they didn’t happen and got tired of waiting, so now in the rocket places. No point in going just to go — have to have some reason, something to do when you get there. If you haven’t figure out how to use this new land, what’s the point? People have seen that there was no point, but there still can be, but not a focus of what we’ve been doing in space. The point is to live there.

In the 21st century, with amazing technological powers, living twice as long as previously imagined. But we’re not proud of what we’ve done, but seemingly ashamed of it. Almost cowering and unwilling to take on the responsibility of wielding the power we’ve created. It’s a symptom, the disease is the closing of the frontier. New things bring new problem, with new opportunities, but in a society when you think we’ve got all we can, change is a threat. From feeling of running out of resources to thinking that it’s time to shift from creating to redistributing. While we sit on the edge of an ocean full of limitless resources. Worrying about our impact on earth’s climate and environment when Mars sits there begging for an impact on its climate and environment, just to warm it up a little. Time to reach out and grab what the universe is offering us. Picked up a book by Heppenheimer called “Colonies In Space.” Can look back with thirty years of experience and see that some of the technical concepts weren’t quite right, and some of the economics weren’t quite right, but one could say the same about Newton. Someone had to be the first to stand up and say, don’t these people need jobs, something to do to pay their way there? Don’t they need a cash crop, just as every migration has had. Gerry O’Neill was that man, we’re all Gerry’s kids, and it’s time to pick up where he left off, and start thinking afresh about how we get out there, make it pay, leave this earth with people who will not come back, and make it the next part of this great human adventure.

“Witches’ Brew”

Paul Spudis discusses the recent LCROSS findings:

The LCROSS team’s published data from the mission reveals a cold witches’ brew deep inside Cabeus crater. The finding of significant lunar water has confirmed data from earlier missions, while the ejecta plume from the LCROSS impact reveals more modest amounts of a variety of other substances. The Near-IR spectrometers on the LCROSS shepherding satellite detected abundant water (H2O) but also hydrogen sulfide (H2S), ammonia (NH3), methanol (CH3OH), methane (CH4), ethylene (C2H4) and sulfur dioxide (SO2). The uv-vis spectrometer found carbon dioxide (CO2), sodium, silver, and cyanide (CN). Aboard the distant LRO spacecraft, the ultraviolet LAMP imager detected hydrogen (H2), nitrogen, carbon monoxide (CO), sodium, mercury, zinc, gold (!), and calcium. But water, present in quantities between 5 and 10 weight percent, is the most abundant volatile substance present.

One of the many travesties of Constellation is that, in attempting to redo Apollo, it ate up all the funding for serious preparatory exploration of the moon that would have provided a lot better guidance to requirements for human lunar activities. Compared to what we previously thought, the moon seems to be a veritable rain forest in terms of water quantities and densities, with other useful volatiles as well.

Back To LA

I didn’t go to the runway dedication today — I just couldn’t see sitting on a bus for six hours or so (two or three each way from Las Cruces to Spaceport America) for a photo op. There will be plenty of other people thee with pictures that will shortly be on the web. It didn’t get back until five or so, and I have a 4 PM flight out of El Paso. I’ll check in tonight.

[Late evening update in CA]

Sorry, arrived safely several hours ago. More anon.