Pearce said it remain possible that SpaceX will be able to confirm a May or June launch, but that would be difficult to achieve in the deadline Inmarsat has to find an alternative rocket. Pearce said Inmarsat has more than one launch option in addition to SpaceX.“It’s probably more likely we would look to exercise one of the options we have been quietly cultivating behind the scenes,” Pearce said. “We’ve talked about one of them, which is the [International Launch Services] Proton launch that we have up our sleeve anyway. But we do have other options as well, which we will look to execute on in the next few weeks. If we need to do so, the May-June time frame is where we are comfortable currently.”
1. So this means they have at least three options for a launch next year, and have clearly designed their satellite to be compatible with all three launchers.2. It would be interesting to know how they manage the choice at such a (relatively) last minute. Have they already done (for example) a coupled-loads analysis for each vendor, or are these becoming streamlined and standardized enough that they could pick a vendor now and launch mid next year?Anyway, I think this is a great sign. Three serious bidders, and vendors competing on availability, means this is turning into a commercial business. That will push innovation and service in a way that sole-source contracts signed years in advance did not.
1. The spacecraft buses already are LV agnostic. And Spacex designed the Falcon 9 to accept existing spacecraft.2. See #1 and final coupled loads can be done 3. It has been this way for decades.
Quote from: Space Ghost 1962 on 08/31/2016 06:02 pmBecause instead of waiting for two years for an Atlas ride (or other/worse), less than 3 months for an opportunistic ride to orbit. Which, if the bet on reuse is successful, drops to a month in less than 2 years.Not really feasible (3 month much more than 1 month). [...]d. Not going to happen for a first flight of a new spacecraft. That will take at around 12 months for analytical integration.[...]
Because instead of waiting for two years for an Atlas ride (or other/worse), less than 3 months for an opportunistic ride to orbit. Which, if the bet on reuse is successful, drops to a month in less than 2 years.
But here you state that analytic integration takes about a year, at least for the first time on a launcher. So has this already been done with all possible launchers, just in case? Or has this process been sped up?
Option B launch provider is likely to be ULA and Atlas. ..
Quote from: LouScheffer on 11/03/2016 01:55 pmBut here you state that analytic integration takes about a year, at least for the first time on a launcher. So has this already been done with all possible launchers, just in case? Or has this process been sped up? Most spacecraft buses have already flown on all vehicles
So who pays for coupled-loads and other analytic integration analyses?
If volumes rise enough to warrant it, automation can greatly reduce payload integration labor costs.
But Lance said the 12 commercial geostationary-orbit satellites sold worldwide so far, of which SSL won four, suggest that 2016 will end with no more than around 16 orders, similar to 2015.That is well down from the historical average of around 20 satellites.
Quote from: Space Ghost 1962 on 11/04/2016 02:34 amIf volumes rise enough to warrant it, automation can greatly reduce payload integration labor costs.Volumes are not rising though, except in nanosatellite segment.QuoteBut Lance said the 12 commercial geostationary-orbit satellites sold worldwide so far, of which SSL won four, suggest that 2016 will end with no more than around 16 orders, similar to 2015.That is well down from the historical average of around 20 satellites.
We'll see.
Quote from: LouScheffer on 11/03/2016 06:41 pmSo who pays for coupled-loads and other analytic integration analyses? Whoever buys the launch service. It is part of the basic price.
So if they don't do the analysis until after the customer has purchased the launch, what do they do if analysis reveals a problem? Who has to make changes, if changes are required? If the needed changes are significant, can the customer get a refund?Or is this point moot, since coupled-loads analysis seldom (or never) reveals any problem with the type of payloads (presumably comsats of various kinds) that might look for a last minute launch provider?
Quote from: Space Ghost 1962 on 11/04/2016 04:17 amWe'll see.As we have seen before
the 3G rollout took $384billion, and LTE more than double that when its complete. The pitiful amounts being shoved out right now for internet sat constellations are simply chicken feed to learn the ropes.More than a trillon will be put into the next generation provider networks, including ground and sat assets.
Of course the real revolution will come when startup companies working out of suburban garages can afford to deploy their first capital assets in space....
The general case however is still a CLA and that seems to need multiple cycles to get right. I find it strange very few people seem to use vibration and shock dampening mounts for their payloads.
Quote from: john smith 19 on 11/07/2016 04:11 amThe general case however is still a CLA and that seems to need multiple cycles to get right. I find it strange very few people seem to use vibration and shock dampening mounts for their payloads. Because it not really viable. It would take a large amount of mass to do it and it would introduce control issues. Think trying to deal with a cantilever mass on a flexible joint and trying to control it from the opposite end.
Keep in mind that F9 represents still the fastest way to jump manifest wait.
Quote from: rocx on 11/11/2016 11:33 amQuote from: Space Ghost 1962 on 11/07/2016 08:28 pmKeep in mind that F9 represents still the fastest way to jump manifest wait.That may change soon. As I understand it from the Cygnus thread ULA is now offering a launch on demand service once per quarter. Probably more expensive, but faster than waiting for SpaceX to catch up on its manifest.My highlighting of term. How many SX per quarter in comparison?
Quote from: Space Ghost 1962 on 11/07/2016 08:28 pmKeep in mind that F9 represents still the fastest way to jump manifest wait.That may change soon. As I understand it from the Cygnus thread ULA is now offering a launch on demand service once per quarter. Probably more expensive, but faster than waiting for SpaceX to catch up on its manifest.