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#21
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Orbital Space Place project
Oh, great. Moving parts to fail. That's a good idea.
Mary If the fins couldn't move, they couldn't steer. |
#22
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Orbital Space Place project
Richard Schumacher wrote:
stephen voss wrote: Anything that has to be delivered with a Delta IV or Atlas V is a backwards step. You mean like plastic disposable twin blade razors are a step back from straight edge reusable razors like your grandfather used? No. If one disposable razor fails, people do not die and hundred million dollar cargoes are not lost. With all due respect your argument is bullcrap. I never said use disposable rockets for launching humans into space and returning them home. In fact I said the opposite which you left out of your post. |
#23
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G EddieA95 wrote:
his whole reusable mantra is sentimentality not common sense. If you can deliver missions using ultracheap and reliable disposable rockets why do you even need reusable rockets? Because they are not cheap in any sense. The Saturn V cost $180M a shot. Space will *never* be a venue of human expansion as long as even a short mission involves throwing away that much. Saturn V is a bogus argument 1) Saturn V was never inteded to be cheap 2) Saturn V was not intended to launch unmanned missions. It was intended to launch humans into space and bring them back to earth (a point where I said reusable rockets had a purpose) 3) Saturn V was never meant to be a mass production vehicle. However let me also point out, that the Russia Energiya rocket could have put the ISS into orbit much cheaper than the shuttle. The problem with most rockets used for satellites is that they were built for government projects. They are not built by companies intent on making money of the sale and launch of their rockets directly to the private sector. |
#24
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Orbital Space Place project
Cardman wrote in message . ..
On Sat, 26 Jul 2003 13:54:05 +1000, Brett O'Callaghan wrote: Along with the inherent simplicity, it seems that a capsule approach is something that could evolve over time as requirements change. Making a large capsule to hold quite a few people I would find most interesting, not that they are doing this of course. Everyone outside of NASA seems to agree that a capsule is better than a plane for OSP type requirements. How scalable is a capsule. If the remit was a crew of 60 passengers, would a capsule still be feasible? |
#25
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Alex Terrell wrote:
How scalable is a capsule. If the remit was a crew of 60 passengers, would a capsule still be feasible? Yes and tending towards no. Yes, you can scale a capsule shape up quite a bit. However, there are diameter restrictions on off the shelf launch vehicles which make a *huge* capsule hard. The largest off the shelf fairings for the EELVs for example will be 5 meter. Using that diameter as one limit to consider, it would be fairly hard to stack 60 people in even a Soyuz-shaped capsule. 30 people, maybe somewhat more, but 60 would be very hard. However, if you are allowed to hypothesize clearing launchers with larger hammerheads (for those not familiar with the term, that is when a payload or payload fairing is larger diameter than the rocket body underneath it) such as say ... oh, 8 meters, then it gets to be a lot easier. A 7 or 8 meter capsule would be able to hold 60 people without too much effort. -george william herbert |
#26
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#27
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