Jaff Posted January 30, 2018 Share Posted January 30, 2018 So when is block 5 going to be a thing where we get 10 reuses from a booster and there’s a rare opportunity of actually expending a booster? Quote Link to comment Share on other sites More sharing options...
RCgothic Posted January 30, 2018 Share Posted January 30, 2018 12 minutes ago, Jaff said: So when is block 5 going to be a thing where we get 10 reuses from a booster and there’s a rare opportunity of actually expending a booster? According to Wikipedia the first scheduled B5 launch is in April for Iridium Next 51-55 Quote Link to comment Share on other sites More sharing options...
Racescort666 Posted January 30, 2018 Share Posted January 30, 2018 18 hours ago, Canopus said: You could also just watch the recorded video later. My gf says the same thing. I tell her that's crazy talk. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted January 30, 2018 Share Posted January 30, 2018 Spoiler Watching the recorded events allows to feel yourself on another planet, as if you watch the live with a lightspeed delay. Quote Link to comment Share on other sites More sharing options...
Streetwind Posted January 30, 2018 Share Posted January 30, 2018 3 hours ago, RCgothic said: According to Wikipedia the first scheduled B5 launch is in April for Iridium Next 51-55 And since Iridium is really itching to have its own pre-flown boosters on future missions, I'm really hoping that SpaceX will try to demonstrate block 5's rapid reusability by reusing it for the next Iridium flight one month later as well... it's probably a little too aggressive to be realistic, but still Quote Link to comment Share on other sites More sharing options...
tater Posted January 30, 2018 Share Posted January 30, 2018 Looks like a full rehearsal of ASDS landing, too. In the water. Guess they are using up all the old school legs. Quote Link to comment Share on other sites More sharing options...
StarStreak2109 Posted January 30, 2018 Share Posted January 30, 2018 How do you lunch a rocket??!!!??? Quote Link to comment Share on other sites More sharing options...
Streetwind Posted January 30, 2018 Share Posted January 30, 2018 With a side of pasta and sauce, of course! Why do you think this mission will fly expendable? It is obviously meant for... *sunglasses* ...consumption Quote Link to comment Share on other sites More sharing options...
magnemoe Posted January 30, 2018 Share Posted January 30, 2018 7 hours ago, Jaff said: So when is block 5 going to be a thing where we get 10 reuses from a booster and there’s a rare opportunity of actually expending a booster? In that setting it would makes sense to keep the old ones for missions there you can not do reuse because of too heavy payload however this might be rare and they plan to use falcon heavy for this. Quote Link to comment Share on other sites More sharing options...
JEB'S DESTINY Posted January 30, 2018 Share Posted January 30, 2018 (edited) How do you think SpaceX will land their second stage? I think it is almost impossible, but it may be done. The reasons that make this so hard is because it's reentry speed is much higher that the 1st stage because it has to go to a geo stationary orbit, if I am correct. So it will just burn up upon reentry. Also, control is very difficult, and upon reentry, it will be unstable. Also the engine is meant for a vacuum, not in the atmosphere. The final reason is that the stage will not have enough fuel to de-orbit and land.One possibility is to smack a heat shield in front of that stage, for the reentry heat, add strong RCS thrusters for stability and control, add landing legs radially near the top, and add a second pair of landing engine in a similar position of the landing legs. Adding more fuel would get more delta V for landing. Like this. Click the link https://docs.google.com/drawings/d/1oUUP11usyqpdFZRUMCYzc0mrS-jviJhm1ZwX0iHl4sM/edit?usp=sharing Edited January 30, 2018 by JEB'S DESTINY Quote Link to comment Share on other sites More sharing options...
Canopus Posted January 30, 2018 Share Posted January 30, 2018 12 minutes ago, JEB'S DESTINY said: How do you think SpaceX will land their second stage? They probably won't. Quote Link to comment Share on other sites More sharing options...
JEB'S DESTINY Posted January 30, 2018 Share Posted January 30, 2018 Well, they probably could, with hard work! Quote Link to comment Share on other sites More sharing options...
Nightfury Posted January 30, 2018 Share Posted January 30, 2018 Just now, Canopus said: They probably won't. Mostly trying to reduce production cost Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted January 30, 2018 Share Posted January 30, 2018 6 minutes ago, JEB'S DESTINY said: How do you think SpaceX will land their second stage? I think it is almost impossible, but it may be done. The reasons that make this so hard is because it's reentry speed is much higher that the 1st stage because it has to go to a geo stationary orbit, if I am correct. So it will just burn up upon reentry. Also, control is very difficult, and upon reentry, it will be unstable. Also the engine is meant for a vacuum, not in the atmosphere. The final reason is that the stage will not have enough fuel to de-orbit and land.One possibility is to smack a heat shield in front of that stage, for the reentry heat, add strong RCS thrusters for stability and control, add landing legs radially near the top, and add a second pair of landing engine in a similar position of the landing legs. Adding more fuel would get more delta V for landing. Like this. Click the link https://docs.google.com/drawings/d/1oUUP11usyqpdFZRUMCYzc0mrS-jviJhm1ZwX0iHl4sM/edit?usp=sharing The above system has been proposed before, and it might work, but it's very unlikely that SpaceX will ever try this. 1 hour ago, tater said: Looks like a full rehearsal of ASDS landing, too. In the water. Guess they are using up all the old school legs. Very odd that they'd dunk legs in the drink for no reason, I think. Maybe they will just be pushing the envelope to try and see what kind of margins they can do and still come out successfully. For example, trying out a much shorter entry burn? They may have done something similar with their last west coast launch. Quote Link to comment Share on other sites More sharing options...
tater Posted January 30, 2018 Share Posted January 30, 2018 1 minute ago, sevenperforce said: Very odd that they'd dunk legs in the drink for no reason, I think. Maybe they will just be pushing the envelope to try and see what kind of margins they can do and still come out successfully. For example, trying out a much shorter entry burn? They may have done something similar with their last west coast launch. Any testing for reentry and landing needs to have as few variables as possible. Landing uses legs, so they get better data with legs. Any improvements in algorithm are helpful, and besides, the block 5 has different legs, they need to use up the old ones. Regarding Block 5, I'm a bit peeved that for crew missions SpaceX has to fly a finalized launch stack (Block 5) 7 times, Boeing has to fly on a finalized launch stack only once (first unmanned test flight will be the only Atlas V with 2 engine Centaur ever), and LockMart/Airbus get to fly with zero finalized stack preflights. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted January 30, 2018 Share Posted January 30, 2018 4 minutes ago, tater said: Any testing for reentry and landing needs to have as few variables as possible. Landing uses legs, so they get better data with legs. Any improvements in algorithm are helpful, and besides, the block 5 has different legs, they need to use up the old ones. They flew the last Iridium from Vandy without landing legs, but with grid fins. They did a re-entry burn and a propulsive controlled splashdown. 4 minutes ago, tater said: Regarding Block 5, I'm a bit peeved that for crew missions SpaceX has to fly a finalized launch stack (Block 5) 7 times, Boeing has to fly on a finalized launch stack only once (first unmanned test flight will be the only Atlas V with 2 engine Centaur ever), and LockMart/Airbus get to fly with zero finalized stack preflights. It's rather ridiculous. Quote Link to comment Share on other sites More sharing options...
NSEP Posted January 30, 2018 Share Posted January 30, 2018 Why do the legs look smaller than usual? Or is my mind just messing with me? I know that they are going to expend this one though. Quote Link to comment Share on other sites More sharing options...
Nightfury Posted January 30, 2018 Share Posted January 30, 2018 16 minutes ago, NSEP said: Why do the legs look smaller than usual? Or is my mind just messing with me? Maybe the soot is a little confusing, but they should be as big as always Quote Link to comment Share on other sites More sharing options...
NSEP Posted January 30, 2018 Share Posted January 30, 2018 6 minutes ago, Nightfury said: Maybe the soot is a little confusing, but they should be as big as always Yep its the soot messing with me. Quote Link to comment Share on other sites More sharing options...
Scotius Posted January 30, 2018 Share Posted January 30, 2018 2 hours ago, Streetwind said: With a side of pasta and sauce, of course! Why do you think this mission will fly expendable? It is obviously meant for... *sunglasses* ...consumption The Kraken will be fed. He shall dine well on a space stick filled with hydrocarbon residue and covered in a tasty layer of high quality soot. Small addition of nitrogen and helium will provide interesting tang to the taste. All hail His Tentacleness! Quote Link to comment Share on other sites More sharing options...
tater Posted January 30, 2018 Share Posted January 30, 2018 Quote Link to comment Share on other sites More sharing options...
tater Posted January 30, 2018 Share Posted January 30, 2018 Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted January 30, 2018 Share Posted January 30, 2018 Scrub? You mean they’re going to clean the booster after all? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted January 30, 2018 Share Posted January 30, 2018 So, any comments from the peanut gallery here, as to whether this scrub will affect the FH launch? If it does go up tomorrow, that might mean two SpaceX launches from the Cape within a week of each other, albeit from different pads. Seems like that’d be a record of its own. Quote Link to comment Share on other sites More sharing options...
KSK Posted January 30, 2018 Share Posted January 30, 2018 1 hour ago, CatastrophicFailure said: Scrub? You mean they’re going to clean the booster after all? It's just a scrub. Doesn't mean the whole launch is a wash. Quote Link to comment Share on other sites More sharing options...
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