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Results tagged with spacex
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user 18458
Space Exploration Technologies Corporation, or SpaceX, is a private space exploration company. It was the world's first privately held company to successfully launch a cargo mission into space , cargo to the ISS (International Space Station), land and reuse a booster, and a crewed mission into orbit. See the wiki for related tags.
3
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SpaceX NROL-76?
Since the NRO satellites are classified, and SpaceX is a private company, will the launch be shown live? …
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8
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1
answer
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What is the ring at the bottom of the Merlin vacuum engine?
When watching SpaceX launches, around 2-3 seconds after the Merlin Vacuum ignition a ring can be seen breaking in 2 from the bottom of the nozzle and then falling away from the second stage. …
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Where is the TEA-TEB stored for the Merlin engines onboard Falcon 9?
The Merlin 1D engines can restart up to four times, they use the pyrophoric mixture of TEA-TEB (Triethylaluminum-Triethylborane) to ignite the engines. My question is where is this stored in the engin …
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2
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1
answer
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What are the differences between the SpaceX Merlin 1D and 1D+ engines?
I am trying to model the Merlin 1D+ using inventor. I was wondering what the major differences between the Merlin 1D and 1D+ were. I find when I search trying to find a 1D+ engine all I come across is …
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More efficient SpaceX landings?
Although the exact trajectory of a rocket is not known before launch, could SpaceX position its landing barge even further down range of the launch pad and eliminate the need for a boostback burn during …
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Do Falcon 9 preflight static fire ignitions use up the engines' ignitors?
After a Falcon 9 has its static fire several days prior to the actual launch, are the TEA-TEB ignitors inside the engine replenished? Or do they have enough to ignite the engines for the static fire a …
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25
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Can SpaceX Falcon 1st stage hover during landing?
The stage appears to decelerate very slowly in the final moments of the landing as a result of the engine firing pattern SpaceX uses.
Per Elon Musk:
Thanks! … In order to land, SpaceX uses a hover-slam or suicide burn, so as soon as the stage reaches zero velocity while decelerating, it’s on the ground/ASDS. …
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Does SpaceX plan to repair SLC-40?
SpaceX just used 39A for CRS-10. Do they have any plans to repair SLC-40 from the September anomaly? The Boca Chica launch center should be ready in 2018, so will they solely use 39A and Boca Chica? …
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5
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How will the SpaceX ITS return from Mars?
It takes 3.8 km/s DV to orbit Mars from the surface, 2.5km/s DV to reach an intercept with Earth, and most likely around 1 km/s to vertically land on Earth as proposed by SpaceX. … DV=3538Ln(2400/300)=7.357km/s
SpaceX plans to do this, but it'll be real tight
However I didn't take into account gravity losses so my numbers are probably off. …
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How does Falcon 9 mitigate re-entry pressure?
SpaceX has been using supersonic retro-propulsion to slow down the stages enough to not cause significant damage to the engines. … The reentry burn SpaceX uses slows the stage down enough so that no extensive damage happens to the stage. …
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Why won't SpaceX launch a rocket for a month?
I found a wikipedia article that stated that CRS-12 was supposed to use the transitional falcon 9 block 4, so is SpaceX putting the final touches on it? … I also thought maybe SpaceX was fixing SLC-40 for the next falcon 9 launch but Spaceflightnow lists CRS-12 for 39A. …
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3
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1
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Is a soot covered flight proven Falcon 9 lighter or heavier than a new falcon 9?
Since SpaceX now does not repaint or clean off the sides of the first stage booster prior to reuse, does this make the soot covered stage heavier or lighter? …
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3
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Merlin 1D Engine
The Merlin Engine is a gas generator cycle engine which uses liquid Oxygen(LOX) and refined Kerosene(RP1) as its propellants.
The SuperDraco engine is a pressure fed cycle engine which uses mono-meth …
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What will the Falcon Heavy maiden flight launch as its payload?
I know that Elon Musk has stated that SpaceX will try to launch the "silliest thing imaginable" on the maiden flight of the Falcon Heavy, but will it be a Dragon capsule on top or a special SpaceX satellite …
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Why did the grid fin of the CRS-8/SES 10 booster burn?
I read that SpaceX uses ablative paint on their gridfins which would explain why it is burning in the first place, but why would it do so after slowing down for the reentry burn? …
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