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It never fails to amaze me that NASA doesn't actively seek out new
launch vehicles for its payloads. Under current NASA regs, I believe that SpaceX would have to launch its Falcon rocket 14 times successfully before NASA could put a payload on it. What is the benefit to the US taxpayer for NASA to not support new, cheaper launch vehicles? The satellite companies, conversely, used to award block contracts to untested launch vehicles in the hopes that some of these would emerge as cheaper launchers for GEO satellites. In the case of SeaLaunch this policy worked very well. |
#3
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![]() "Explorer8939" wrote in message om... It never fails to amaze me that NASA doesn't actively seek out new launch vehicles for its payloads. Under current NASA regs, I believe that SpaceX would have to launch its Falcon rocket 14 times successfully before NASA could put a payload on it. Actually, that's not true. A NASA payload could ride the first launch of a new design, once it had been subjected to a thorough certification process. The document at http://www.ksc.nasa.gov/procurement/...aunvehcert.pdf will explain the process. It is true that NASA does reserve the right to require that a Category 3 payload (e.g. Cassini) be launched on an LV configuration that has demonstrated 14 successful launches in a row. However, this is not true of category 1 or 2 payloads. One of the projects that I'm working on now is an examination of the Delta IV M+4,2 for use in orbiting a GOES satellite (a category 2 bird). By the manifested launch date, Delta IV will have flown 5 times, only one of which is the same as the configuration selected for the GOES launch. What is the benefit to the US taxpayer for NASA to not support new, cheaper launch vehicles? NASA is not the only agency that can support new vehicles, as the DOD is proving. Given its budget, I think you can understand why NASA might be more willing to let some other customer be the pioneer. Still, I believe you'll see NASA payloads on SpaceX at some time in the future. The satellite companies, conversely, used to award block contracts to untested launch vehicles in the hopes that some of these would emerge as cheaper launchers for GEO satellites. In the case of SeaLaunch this policy worked very well. Was Zenit, a proven booster, modified that much for the SeaLaunch enterprise? Or was the only thing new the launch concept? -Kim- |
#4
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![]() "Rand Simberg" wrote in message ... I think that it would actually behoove launch companies to build test flights into their business plan, instead of alway expecting the government to pay for them. If they don't have a design that allows an affordable flight-test phase, then they probably don't have a design that will significantly reduce launch costs. The industry practice seems to be one of offering first flight to a commercial customer for a very reduced price. This has been true of Atlas II, IIAS, III & V, Delta III & IV. The last time the government paid for a first flight may have been the first Titan IV launch back in '89. -Kim- |
#5
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On Fri, 24 Oct 2003 04:11:13 GMT, in a place far, far away, "Kim
Keller" made the phosphor on my monitor glow in such a way as to indicate that: "Rand Simberg" wrote in message .. . I think that it would actually behoove launch companies to build test flights into their business plan, instead of alway expecting the government to pay for them. If they don't have a design that allows an affordable flight-test phase, then they probably don't have a design that will significantly reduce launch costs. The industry practice seems to be one of offering first flight to a commercial customer for a very reduced price. This has been true of Atlas II, IIAS, III & V, Delta III & IV. The last time the government paid for a first flight may have been the first Titan IV launch back in '89. Perhaps I should have written "...expecting some customer to pay for them." The industry practice, to date, also seems to be to offer very expensive, unreliable launch systems... -- simberg.interglobal.org * 310 372-7963 (CA) 307 739-1296 (Jackson Hole) interglobal space lines * 307 733-1715 (Fax) http://www.interglobal.org "Extraordinary launch vehicles require extraordinary markets..." Swap the first . and @ and throw out the ".trash" to email me. Here's my email address for autospammers: |
#6
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#7
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Rand Simberg wrote:
On Fri, 24 Oct 2003 04:11:13 GMT, in a place far, far away, "Kim Keller" made the phosphor on my monitor glow in such a way as to indicate that: "Rand Simberg" wrote in message . .. I think that it would actually behoove launch companies to build test flights into their business plan, instead of alway expecting the government to pay for them. If they don't have a design that allows an affordable flight-test phase, then they probably don't have a design that will significantly reduce launch costs. The industry practice seems to be one of offering first flight to a commercial customer for a very reduced price. This has been true of Atlas II, IIAS, III & V, Delta III & IV. The last time the government paid for a first flight may have been the first Titan IV launch back in '89. Perhaps I should have written "...expecting some customer to pay for them." I like the idea of offering the first flights of a new launcher at a deep discount. Sending sand bags to orbit serves no purpose. Of course you don't put expensive satellites on an untested launch vehicle. But if you are in the business of building satellites on the cheap, launching them on the cheap makes sense, even if you might lose the thing on the way up. Alain Fournier |
#8
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![]() "Jorge R. Frank" writes: That's not unique to the space industry. The mantra among software customers is "never buy a dot-zero version of anything." The cynical among us suspect that's the main reason why Microsoft started getting cute with their version numbers starting with Windows 95. I stuck with Windows 3.1 then made the jump to Win 98SE, which I'm still using at home. I've considered jumping to Win2k (to avoid WinXP), but have yet to find a compelling reason to "upgrade". Personally, I am skeptical of buying first-model-year cars, as well. Me too, but that won't stop you from getting a "lemon". I skipped the first year Escape bought an '02 Escape with the 4WD, V6, auto, and etc. and got burned because the ZF transmission in the thing wasn't "beefed up" enough from the previous version (used in previous cars). The torque converter started to shudder, and I came to find that this was a design defect that Ford (and ZF) couldn't fix. They glossed over the issue by changing the transmission fluid, and later coming out with a different program for the transmission (don't lock the torque converter until a higher RPM). By then it was too late. We traded the thing for an '04 Pontiac Vibe (a Toyota Corola Matrix in Pontiac drag). Pity, the Escape was very fun to drive. The Vibe just doesn't have the torque (especially at low RPM's) or the horsepower to make feel as responsive as the Escape. Jeff -- Remove "no" and "spam" from email address to reply. If it says "This is not spam!", it's surely a lie. |
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