"Falcon Heavy is the most powerful rocket in the world and historically is second only to the Apollo-era Saturn V moon rocket."I'm glad to see the SpaceX propaganda machine is alive and well (Energiya, anyone? Possibly even the N-1?).
Quote from: Proponent on 05/30/2012 05:17 am"Falcon Heavy is the most powerful rocket in the world and historically is second only to the Apollo-era Saturn V moon rocket."I'm glad to see the SpaceX propaganda machine is alive and well (Energiya, anyone? Possibly even the N-1?).Umm.. why not just say the space transportation system? They're both in the same class.. As for N-1, why would anyone bring that fireball up?
Quote from: Ronsmytheiii on 05/30/2012 03:05 amQuote from: Robotbeat on 05/30/2012 03:00 amEven so, they could probably pull it off. If they ground test it first.I dont doubt that, just doubt that a customer would bet two expensive satellites on the success of cross-feed after a single test flight so early, tricore design is a proven design in comparison.On the contrary, if the first test flight uses cross-feed, it'll probably be safer for the customer to use cross-feed on their own flight, keeping things as close to the previous flight as possible.Even so, we'll see how long the cross-feed feature sticks around.
Quote from: Robotbeat on 05/30/2012 03:00 amEven so, they could probably pull it off. If they ground test it first.I dont doubt that, just doubt that a customer would bet two expensive satellites on the success of cross-feed after a single test flight so early, tricore design is a proven design in comparison.
Even so, they could probably pull it off. If they ground test it first.
Thierry Guillemin, Intelsat's chief technical officer, said Falcon Heavy would need to complete multiple test launches before Intelsat assigns one of its satellites for a flight. "Intelsat has exacting technical standards and requirements for proven flight heritage for our satellite launches," Guillemin said. "We will work closely with SpaceX as the Falcon Heavy completes rigorous flight tests prior to our future launch requirements."
What I expect spaceX to do is use unproven technologies like cross feed to push the envelope, to increase performance and profit. But they can fall back on what works. It's 44mt without cross feed, correct? If that competes on cost, it funds the R&D to keep working.
Quote from: beancounter on 05/30/2012 02:55 amDoesn't seem to take SpaceX very long to turn 'unproven technology' into proven spaceflight systems.Actually until SpaceX recovers a stage, propulsivly land a capsule returning from space, or does a VTVL with a vehicle ruffly the size of a ELV 1st stage they will really not have done anything that is "unproven technology".To date they seem to be trying to take the best lessons learned from Silicon Valley, Russian Aerospace, NASA, and the EELV program and mix them all together while trying very hard to avoid "unproven technology or practices".SpaceX is much more evolutionary than revolutionary.
Doesn't seem to take SpaceX very long to turn 'unproven technology' into proven spaceflight systems.
I can remember back in the day when each Hughes and maybe Loral had "contracts" for 10 launches on each of these vehicles: Delta III, H-II, Sealaunch, etc.
Quote from: Jim on 05/30/2012 02:11 pmI can remember back in the day when each Hughes and maybe Loral had "contracts" for 10 launches on each of these vehicles: Delta III, H-II, Sealaunch, etc.Back in the day? that was only the late 90's, or was it early 2000's?
That the Intelsat PR didn't mention a launch date makes me suspect that SpaceX isn't confident enough in the FH development schedule yet to contractually commit to an operational date.
And yeah; I know - 45x Merlin 1D engines!!
They've talked about a single larger RP-1 engine to replace the nine Merlins (usually called Merlin 2), which would be in the same class as F-1 or RD-180. But it seems to be a very priority at the moment.
Quote from: simonbp on 05/30/2012 03:59 pmThey've talked about a single larger RP-1 engine to replace the nine Merlins (usually called Merlin 2), which would be in the same class as F-1 or RD-180. But it seems to be a very priority at the moment.Well, the tea-leaf reading in other threads about SpaceX's engine plans is that two things made this a less attractive way forward for them: the performance they got off the Merlin-1D upgrade, and the switch to a boost-back strategy for recovery (which means that the hypothetical Merlin-2 would have to throttle way down during the recovery phase).
It has been previously mentioned that Falcon Heavy will not always use cross feed, would bet that this launch will only need a tricore design rather than relying on an unproven technology.
Quote from: Ronsmytheiii on 05/30/2012 02:47 amQuote from: FinalFrontier on 05/29/2012 04:03 pmAnd considering the cross feed system that is a really smart plan. It has been previously mentioned that Falcon Heavy will not always use cross feed, would bet that this launch will only need a tricore design rather than relying on an unproven technology.I'll take that bet. How about a T-shirt with a space-related theme. If the first FH flight is cross-fed, then you send me one, if it isn't cross-fed, I'll send you one.
Quote from: FinalFrontier on 05/29/2012 04:03 pmAnd considering the cross feed system that is a really smart plan. It has been previously mentioned that Falcon Heavy will not always use cross feed, would bet that this launch will only need a tricore design rather than relying on an unproven technology.
And considering the cross feed system that is a really smart plan.