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We recently discussed the launch price/cost of an Ariane 5 here.
The recent Arianespace press release provides some clues about the subject. "http://www.arianespace.com/site/news/releases/presrel06_01_04.html" According to the release, Arianespace earned EU1.05 billion ($1.27 billion) in 2005 while performing five Ariane 5 launches - an average of $254 million per launch. Arianespace subsidiary Starsem earned EU100 million ($120.95 million) for three Soyuz launches, an average of $40.32 million per launch. - Ed Kyle |
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Ariane 5 Launch Price Revisited
http://groups.google.com/group/sci.s...169cf9618fcb5f 2005 while performing five Ariane 5 launches - an average of $254 million per launch. Seems sufficiently dirt cheap, especially for the nearly 10t capability of delivering such substantial payloads into GSO. I have a serious 10% question: What's the translunar compact-launch (aka 1000 kg payload via Ariane-.5) going to cost us? I have another serious 1% question: What's the translunar Micro-launch (aka 100 kg payload via Ariane-.05) going to cost us? Although I do have a couple of rather substantial items on my to-do list, such as the VL2-TRACE and of the considerable LSE-CM/ISS deployments to consider, that which might take all of what the most ambitious Ariane5 can accommodate. However, since scientific satellites as lunar orbiting missions or even as lunar/planetary probes can become those of 10 kg or less, where's the great volume of future needs for the full blown Ariane 5? It seems 100 launches of the Ariane-.05 at $5 million or less per pop becomes a little better bean-counting worthy than having accomplished one spendy Ariane-5 launch. Should I be asking if China can accommodate such a micro-launch for perhaps less than $1 million? - Brad Guth |
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Rémy |
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Ed Kyle wrote:
We recently discussed the launch price/cost of an Ariane 5 here. The recent Arianespace press release provides some clues about the subject. "http://www.arianespace.com/site/news/releases/presrel06_01_04.html" According to the release, Arianespace earned EU1.05 billion ($1.27 billion) in 2005 while performing five Ariane 5 launches - an average of $254 million per launch. Arianespace subsidiary Starsem earned EU100 million ($120.95 million) for three Soyuz launches, an average of $40.32 million per launch. But you are mixing together Ariane 5G and Ariane 5ECA - which are different and one would expect a Ariane 5ECA launch to be more expensive. Also, the URL you pointed out says "Arianespace's sales showed strong growth in 2005, to 1.05 billion euros" which is different (potentially quite a bit different in fact) to Arianespace recieving 1.05 billion euros for launches. Also - the new launch prices would supposedly be available for future launch contracts, not existing ones signed years ago, no? Hence there would be a difference between what one would pay when signing a lunch contract now vs. 3 years ago. The Ariane supply scheme is also changing with EADS now delivering fully built launchers instead of just stages which Arianespace integrated. - Ed Kyle |
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Brad Guth wrote:
Ariane 5 Launch Price Revisited http://groups.google.com/group/sci.s...169cf9618fcb5f 2005 while performing five Ariane 5 launches - an average of $254 million per launch. Seems sufficiently dirt cheap, especially for the nearly 10t capability of delivering such substantial payloads into GSO. I have a serious 10% question: What's the translunar compact-launch (aka 1000 kg payload via Ariane-.5) going to cost us? There is no really simple answer. How fast do you want it to reach Moon? The answer will diverge significantly depending on if you want/need to get there fast or can handle geting there slow SMART-1 style. I have another serious 1% question: What's the translunar Micro-launch (aka 100 kg payload via Ariane-.05) going to cost us? 1/2 of SMART-1 provided you don't want the 100kg to be a human in a rocket chair. Brad Guth |
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There is no really simple answer. How fast do you want it to reach
Moon? The answer will diverge significantly depending on if you want/need to get there fast or can handle geting there slow SMART-1 style. Sander Vesik, Then don't bother giving me a simple answer. Give me lots of 'what-if' complex answers. How about for starters anything but like SMART-1, as that's totally pathetic. Instead, lets go there in nearly the exact same time as NASA/Apollo, except with perhaps merely getting 10 each of the 10 kg microsatellites deployed into close lunar orbits (say starting those little suckers off at 25 km off the deck). That cost of "1/2 of SMART-1 provided you don't want the 100kg to be a human in a rocket chair" seems rather spendy. Does it really take all that much of a modern day rocket investment for merely accomplishing 100 kg worth of payload? Is the modern day liftoff rocket/payload ratio still that bad off? If so, what's 1/2 of SMART-1 worth these days? - Brad Guth |
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This is still a work in progress that's partially a result of others
(mostly naysayers) not sharing. Thus I'm locating somewhat interesting numbers that at least others and I can use for future arguments. I've noticed that another one of my previous contributions has been blocked and/or banished by those MI6/NSA~CIA (aka MIB) Usenet goons, thus I'll try to reconstruct it and try once again at getting it to stick. Ariane 5 / Flight 162 http://www.arianespace.com/site/news...on_up_131.html "Combined weight of the complete triple payload "stack" -- including the dispensers and adapter hardware -- was approximately 6,160 kg." "During the multi-step mission sequence, the 2,750-kg. INSAT 3E was released approximately 29 minutes into the flight after riding in the upper payload slot atop the Ariane 5's SYLDA 5 dispenser system." "The SYLDA 5 structure was separated three minutes later, exposing e-BIRD for its deployment at 34 minutes into the flight. e-BIRD, which had a liftoff mass of 1,525 kg." Their final launch task of deploying SMART-1 came 8 minutes later, 42 minutes after liftoff: SMART-1 was by far the smallest of the Flight-162 payloads, weighing in at 370 kg was released as for eventually (about as slow as you'd dare go) heading itself towards orbiting the moon. "Flight 162 is the first time Ariane 5 has launched three satellites" Total of these three individual satellites represented a combined payload mass of 4645 kg. The total launch vehicle mass at liftoff was about 743~746 metric tonnes, and of that only 8% of the total payload(s) that amounted to 4645 kg was attributed to SMART-1 at merely 370 kg (seems hardly worth mentioning). Actually, it's more like 6% of their grand payload plus dispenser total. Seems only fair that perhaps at most SMART-1 should have to pay for 8% of the ride. Even though numbers are seemingly all over the place, whereas I'd have to say that's about as complex and otherwise as efficient as multi-task deployments get. Though seemingly offering a good enough deployment ratio, as having suggested something that's overall better off than 745:4.645 = 160:1. However, a dedicated all-in-one GSO deployment of 82:1 is considerably better off, as well as for whatever a dedicated Ariane-5 should manage on behalf of a dedicated translunar deployment should very well become twenty fold greater than SMART-1, making their existing translunar deployment capability of 7.2t into a ratio that's closer to the 110:1 mark as being rather oddly rocket-science deficient, at nearly twice as bad off as the reported performance of what the Saturn-5 with it's antiquated LOX/RP-1 first stage having supposedly accomplished such an extensively better than SRB performance as of today (is that impressive, or what?). With the new and improved inert/dry mass of the Ariane-5 as becoming touted for getting 12t into GSO with an 800t gross liftoff is 66.7:1, whereas if the translunar demand is half again demanding as per GSO, as such making their lastest improved capability 100:1 By way of the old Saturn-5 example, it's certainly suggesting a somewhat pathetic ratio as for the Ariane-5 class of their translunar deployment phase as having accommodated the SMART-1 portion, that was pretty much entirely on it's own ION micro-thruster after Ariane-5 dropped off the first two primary items along the way. Unfortunately, I believe SMART-1 was actually another wag-the-dog sort of pro-NASA/ESA infomercial, representing yet another limited cost impact mission that has taken (as in wasted) the most time while having diverted the public media, plus otherwise having accomplished little if any improvement in lunar-science (partly because of SMART-1 having been way too damn far away from the moon). Here's some of the interesting old numbers that do and don't add up. Saturn-5 total Mass: 3,054,750 kg A-17 Launch mass ? : 2,923,387 kg The Apollo-17 Spacecraft total (meaning all inclusive) mass of 52,740 kg was either suggesting a ratio as poor as 58:1 or of it's rather unusually impressive 55.4:1, whereas Apollo-15 having accomplished 65:1 is still impressive by modern standards if using Saturn-V w/seacraft tally of 3,054,750 kg as their total liftoff mass; therefore you get to pick and chose whatever suits your argument. It's only because these NASA/Apollo numbers simply are not adding up, I'm having to suggest that our Apollo spacecraft inert/dry mass wasn't nearly as bad off, and that they essentially utilized this insider (aka need-to-know) advantage of instead hauling extra fuel and having utilized such extra capacity on behalf of their spacecraft being the forth stage that was essential in order to have achieved the fully robotic portions of orbiting our moon and having recovered the film from somewhere within the relative safety of the LL-1/ME-L1 zone that remains as so gosh darn unusually taboo/nondisclosure these days. - Brad Guth |
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Pathetic? It is one of the coolest science experiments sent to Moon
ever, never mind that it also beats anything previous on $/kg figures by a LONG stretch. What is the particular reason that you need to have the 1000kg arrive on Moon fast ? If there isn't one, you can get it there in probably 1600kg total, including the payload. And that includes conventional engine & fuel for it for a soft touchdown. I totally agree that the $/kg is impressive, even though you can't seem to share in what portion of the launch mission cost was specifically SMART-1 related. I never specified that getting 100 kg there fast was all that imperative, just that if Saturn-V managed the sort of horrific tonnage that they supposedly did in such short order, then what's the big deal for utilizing the Ariane-5 formula of rocket-science that should be a bit slower but otherwise nearly twice as good per kg? Your velocity related response of "If there isn't one, you can get it there in probably 1600kg total, including the payload" seems a wee bit impressive, at 16:1 isn't likely unless you have the expertise to back that up. I'm especially impressed if "that includes conventional engine & fuel for it for a soft touchdown" is true. I actually hope your 16:1 is correct, as that's going to make the task extremely dirt cheap, especially if only as semi-soft (controlled impact) landing is all that's required. The problem is that you are limited by the mass of the solar panels, the ion engine and misc, fixed weight things - 100kg payload to moon is not really all that sensible compared to 200-300 kg. What 100 kg (I was thinking 10 kg each)? What stinking solar panels? What stinking ion thruster? Obviously you're having difficulty thinking small, as in microsatellites of 10 kg each, whereas each might include a micro-SRB for getting such satellites diverted into their individually different orbits (not much sense having all ten of these suckers covering the same ground). Good grief folks, these are disposable satellites that are intended for perhaps all of 60 days worth. As usual, I was way outside of my box by thinking of utilizing the H2O2/aluminum battery, or the good old lithium battery along with perhaps at most a m2 worth of PV cells. After all, circuitry within each of the 10 kg microsatellites that's only intended for their individually accomplishing 1000 orbits of starting in at 25 km that'll obviously quickly decay down to the deck before their obvious impact (semi-soft crash landings), whereas such can't hardly amount to much of any energy demand per orbit. A thousand such orbits is worth obtaining at least 100,000 extremely closeup images each, plus numerous tens of thousands of other essential science readings, along with the somewhat iffy prospects of a few such semi-hard landings surviving their lunar dust tarmac environment as for subsequently contributing even more interesting hard-science (certainly a whole lot more info than we currently have to work with). I'm thinking that such microsatellites could be easily and proficiently mass produced by the likes of SONY, or perhaps SAMSUNG or even CASIO if not via something better from Russia or even China at not all that much expense. Besides the nifty rocket-science part that you seem qualified upon, would you(aka Sander Vesik) like to help specify their innards and even their external shell? Since we'll have to deal with a touch of a sodium rich atmosphere, plus a few other heavier elements to work with (especially as per dropping below 25 km), thus at something near 1/6th G making each 10 kg worth 1.667 kg, along with a bit of aerodynamics should become sufficiently viable at 2.4 km/s. - Brad Guth |
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Brad Guth wrote:
Your velocity related response of "If there isn't one, you can get it there in probably 1600kg total, including the payload" seems a wee bit impressive, at 16:1 isn't likely unless you have the expertise to back that up. I'm especially impressed if "that includes conventional engine & fuel for it for a soft touchdown" is true. I actually hope your 16:1 is correct, as that's going to make the task extremely dirt cheap, especially if only as semi-soft (controlled impact) landing is all that's required. Back what up? SMART-1 was 370 kg out of which less than 100 kg was dedicated to propulsion. That is a much better ration than 16:1. Also, the 1600kg was for delivering 1000kg from GSO to moon surface, not 100kg - but taking a long time. Note that both of these numbers are for what is essentially payload delivered to GSO from the point of view of Ariane and do not contain any accounting for how much mass Ariane 5 needs to get it there. I don't really see the point - the per-kilogram effort would be the same if it was a chemical engine using lunar supply barge. Brad Guth |
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Sander Vesik,
Thanks for this highly educational feedback. Back what up? SMART-1 was 370 kg out of which less than 100 kg was dedicated to propulsion. That is a much better ration than 16:1. Also, the 1600kg was for delivering 1000kg from GSO to moon surface, not 100kg - but taking a long time. Note that both of these numbers are for what is essentially payload delivered to GSO from the point of view of Ariane and do not contain any accounting for how much mass Ariane 5 needs to get it there. I don't really see the point - the per-kilogram effort would be the same if it was a chemical engine using lunar supply barge. Obviously you're into playing mindset/syntax word games. Whereas I'm talking about the real thing of getting whatever away from the surface of mother Earth into orbiting our moon, and you're into playing around with GSO to lunar orbit. I suppose that indirectly I can actually appreciate that form of fuzzy logic, especially since we know of what the current capability of a 790t liftoff accomplishing 9.6+t into GSO is a done deal. Just for my being sure; Are you saying that from GSO it'll only take 600 extra kg worth of rocket in order get the 1000 kg package into lunar orbit? or are you saying it'll take an extra 1600 kg for making that happen? I'll very much agree that a 1.6:1 ratio from GSO to lunar orbit would certainly represent a good if not a terrific ratio, even if it's slower than molasses. Since I'm in no hurry, I suppose there's no valid point in going there any faster (although the gravitational benefits of taking advantage of alignment with LL-1 shouldn't be excluded, and obviously you can't accomplish that if going too damn slow). Of course, a 1000 kg motherload of 10 kg microsatellites is affording a rather nifty population of 100 of them little suckers. - Brad Guth |
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