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- Newsgroups: sci.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!usc!rpi!acm.rpi.edu!strider
- From: strider@acm.rpi.edu (Greg Moore)
- Subject: Re: ACRV/Soyuz P # of Passengers
- Message-ID: <7=dy4d+@rpi.edu>
- Nntp-Posting-Host: acm.rpi.edu
- Organization: The Voice of Fate
- References: <1992Aug15.143945.3204@iti.org> <1kbya_k@rpi.edu> <1992Aug15.221837.582@iti.org>
- Date: Mon, 17 Aug 1992 15:45:15 GMT
- Lines: 107
-
- In article <1992Aug15.221837.582@iti.org> aws@iti.org (Allen W. Sherzer) writes:
- >In article <1kbya_k@rpi.edu> strider@acm.rpi.edu (Greg Moore) writes:
- >
- >>>A simple return craft can be built to return these payloads in a suitable
- >>>environment. Estimate the cost of this anyway you want.
- >
- >> Hmm, sorry, I don't have my figures for EVA handy.
- >
- >Well when you can attach numbers to your complaint I will address it.
- >Otherwise, it can't be considered credible.
- >
- Sorry, I wasn't being facetious enough there. My point is that
- all of a sudden you've added ANOTHER cost and simply assumed your savings
- are great enough that it just doesn't matter. Since you're adding the new
- requirement, I think it should be up to you add figure the cost of EVA to
- remove and replace the panels instead of using the shuttle.
- Personally, I think a better bet on your side might be to
- use the cost for a smaller version the LDEF that can be launched and
- returned in one piece aboard a HLV or other craft.
-
- >>>Since it achieves less reliability than commercial systems costing a fraction
- >>>as much I don't think it is anything to boast about. Let's see it go on
- >>>for a few years.
- >
- >> How? If you kill it? Compare the reliability of the first 50 flights
- >>of the shuttle with the first 50 of any booster. When we get more
- >>shuttle flights under our belt, we use that as a better data set.
- >
- >Shuttle deserves to die on the basis of cost alone. Its generally
- >poor relaiblity is just iceing.
- >
-
- >>>HL Delta would use Complex 37. As for Atlas, the report I mention does
- >>>say that the additional six flights can be acheived.
- >>>
- >> Ok, so, let's see... under YOUR plan, you need at least 2 Soyuz
- >>flights to recrew that station, 4 times a year.. gives 8 flights. Ok,
- >>so where do the extra 2 come from?
- >
- I don't recall your figures including the integration of Soyuz on
- Atlas AND the HLV...
- In anycase, could you email my your figures. I no longer have them
- and I'd like to see them again. Thanks.
-
- >They go up on the HLV along with the resuply.
- >
- >> Given my numbers of min 3 flights
- >>gives you 12 flights a year, twice the 6 you quote.
- >
- >Only eight Soyuz are needed. If we need 12, that simply raises the cost to
- >$1.6 billion per year. Instead of saving $ billion per year we will only
- >save $3.4 billion.
- >
- My point about # of flights has been conceeded, your numbers are
- ok here.
-
- >>Now, where do we
- >>launch the Progress and other resupply flights?
- >
- >the HLV of course.
- >
- >>What happens
- >>when an Atlas is grounded (for whatever reason, I believe that you are
- >>reasonable enough to admit that sometimes ANY booster can be delayed
- >>somewhat) on the pad you're planning on launching your resupply mission?
- >
- >Since it can happen to any vehicle it can happen to Shuttle. Since we
- >resuply with unmanned vehicles, gounding is a far more serious problem
- >for Shuttle.
- >
- >I also point out that unlike Shuttle, the alternate approach has
- >backups and assumes things will fail. If Shuttle fails, your dead
- >in the water. If Atlas fails, you launch on Titan. If HL Delta
- >fails, you use Titan V.
- >
- This is actually the best part of your idea I like: Alternatives!!
-
- >>>What isn't there is included in the estimated development costs. Like I
- >>>said, the HL Delta designers know what they are doing.
- >
- >> I've neer seen you quote the money to be spend on intergration
- >>facilities, etc.
- >
- >Nevertheless they ARE included.
- >
- >>>Look, McDonnell Douglas offered the government 20 HLV flights at a fixed
- >
- >>>price.
- >
- >> Oh Allen? What do we need 20 flights for?
- >
- >That represents ten years of station resuply.
- >
- > Allen
- >
- >--
- >+---------------------------------------------------------------------------+
- >| Allen W. Sherzer | "If they can put a man on the Moon, why can't they |
- >| aws@iti.org | put a man on the Moon?" |
- >+----------------------251 DAYS TO FIRST FLIGHT OF DCX----------------------+
-
-
- --
- <------------------------------------------------------------------------->
- Greg d. Moore | Strider@acm.rpi.edu
- Green Mountain Software | "All that is gold does not glitter."
- Carpe Diem |
-