Making Space Work: 2 Missing Piecesby Joe Katzman at September 21, 2003 5:38 AM
In "Ad Astra Without NASA," I said that:
Well, not quite. In fact, there are 2 major pieces missing, and they're affecting America's military as well as its civilian space program. One is cheaper launch technologies. The other is a space industry that doesn't have to depend solely on NASA and other central-planning agencies. This post will examine these missing pieces, offering analysis and links that will bring you up to speed - and maybe, just maybe, change the way you think about our next steps to space. I Need A Boost As rocket scientist blogger Rocket Man noted in response to Ad Astra, Without NASA:
To get a sense of the scales we're talking about, contemplate the figures in Rand Simberg's The Non-Innovator's Dilemma. Simberg lays out the real costs of the shuttle program and the economic model that makes any similar replacement a losing proposition. NASA, he says, is currently trapped in a model that does not work, and never will. Fortunately, there's hope. Rocket Man summarizes the key engineering barriers in Reducing Launch Costs. For a more comprehensive tutorial on the subject, David Throop of UTexas recommends JSC Stress Analyst Peter A. Taylor's page: "Why Are Launch Costs So High?" The barriers seem dauntng, but Jay Manifold offers a cheerful assessment: "...the physics of spaceflight, even that tough climb to low Earth orbit, imposes a barrier less than that of transcontinental airplane flight [in the early decades of airplanes]." Rocket Man isn't so sure, which leads to a further debate with Rand Simberg. What is certain, is that serious efforts are underway in this area. DARPA's RASCAL program has been described as seeking "a hot rod to space (Hat Tip: HobbySpace.com), and Japan's JAXA also has a new rocket development program aimed at lowering launch costs. All commentators agree, however, that new technologies, 2-stage vehicles, and building up a mass of repeat space and near-space flights are the keys to success. Now one begins to see why efforts like Rutan's SpaceshipOne / White Knight combination and other private Low Earth Orbit (LEO) vehicles are such good news. They aren't fully orbital - but they can help lay the foundations for something that is, even as DARPA, JAXA, et. al. seek to drive down the cost of conventional rocket technologies. As the title of Simberg's article suggested, this fits with research to date about the way innovation really works... IF the new, lower-performing LEO options fit a special market need that lets them attract more investment and improve. Which brings us right up to our next gap. We Need A Plan... or Twenty This is where the ongoing debate between Blake "LaughingWolf" Powers and Rand "Transterrestrial Musings" Simberg comes in. For LEOs to progress into the affordable launch technology we need, there has to be a business case for their use that values what they can do, and the lower cost at which they can do it compared to conventional rockets.
I'll close with a quote from LaughingWolf's recent Talking at Cross-Terms post:
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