ฝัง
- เผยแพร่เมื่อ 25 พ.ค. 2024
- Nasa Orion facing big problem! SpaceX Dragon to REPLACE...
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(Intro)
(Orion heatshield’s issue) 0:41
(SpaceX’s Dragon spacecraft) 3:06
(Nasa’s lack of transparency) 6:35
outro 8:32
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#techmap #techmaps #elonmusk #starshipspacex #spacex
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1) SOURCES OF IMAGES AND VIDEOS
Tony Bela : / infographictony
John Cargile: / groundtruthpics
WAI: / @whataboutit
/ felixschlang
Vooper3D: / vooper3d
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Nasa Orion facing big problem! SpaceX Dragon to REPLACE...
"More years of delay but keep pouring money on us".
This is exactly what the public is now thinking when referring to Nasa's Artemis program.
Yeah! Can you guess what's going on?
Although Artemis 1 has gone two years and Artemis 2 is just one year away, Nasa is not yet sure what exactly happened with Orion's heat shield and how to fix it
Nasa Orion facing big problem! SpaceX Dragon to REPLACE...
More notable is the national agency's opaque response not only to Orion's issue but to the entire program.
Once people get sick of the way Nasa is wasting their tax dollars, SpaceX's Dragon is called out for help.
Nasa Orion is facing a big problem! SpaceX Dragon to replace...
Find out everything in today's episode of Techmap.
Nasa Orion facing big problem! SpaceX Dragon to REPLACE...
During a meeting with a committee of the Nasa Advisory Council on April 26, Artemis mission administrator Amit Kshatriya said that the agency was still in the middle of its investigation on the performance of the heat shield from Artemis 1.
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I really don't get it. The problem was solved for the Apollo Command Module back in the 1960s. Apollo 4 in late 1967 had the first Command Module to re-enter the Earth's atmosphere at a speed in excess of 24,000 mph. Multiple Apollo missions repeated this feat without a single failure. Why is this so hard now for Orion?
Amit Sh....... wha....? 😮.
That is what happened to one of the space shuttles, some tiles fell off at launch, and then skin burn through on re-entry caused complete disintegration of the shuttle craft. Spacecraft are not a lot different than aircraft, in that the highest risk is on take off and landings.
If you are talking about the space shuttle Columbia, thermal insulation foam fell off of the external propellant tank at launch and struck the leading edge of the left wing causing a big hole in the wing. Scientist knew the wing might have been damaged but failed to take pictures to determine the extent of damage. During atmospheric landing hot gases penetrated inside the wing through the hole and destroyed major structural components of the wing and subsequently the whole craft.
@@rocroc Irrespective of the exact details, which they kept very hush hush at the time, because of inadequate RISK MANAGEMENT. (heads will roll thing) I am well aware of the RISK ASSESSMENT AND MANAGEMENT and the requirement for "root cause" and "contributing factor" analysis and identification. Since there was not a lot of information released, my assessment of "root cause" was "incompetence" and "unaccountability", whatever fell off the tank (ice etc.) was only a "contributing factor" to the disaster, and not the "root cause".
No inspection procedures developed for when the craft was aloft, such as an inspection camera on the arm etc. Their fate would probably have been sealed anyhow because the only safe way down was probably by a rescue craft. But since it was their lives, it was their decision, and they should have been able to make an "informed decision". By SH&E standards every work situation where there is significant disaster potential, there is supposed to be a mitigation Plan. A disaster recovery Plan. Obviously these idiots had none, because it was not their lives on the line.
Crew Dragon can not survive a 25,000 mph re-entry. If SpaceX was given the job they would launch a heat-shield mockup using Falcon 9 with a kick stage to accelerate it to 25,000 mph and do that twice a month until they figured out a design that works. The SLS team will just call a bunch of meetings and speculate about what might work.
They can extend the trunk section with a Merlin V and fuel tanks easy!
Is there a way to slow the vehicle down so it doesn’t go thru the atmosphere so fast? Have some engines that will slow the vehicle down. I don’t know anything. Just a question.
The issue is that NASA is in a hurry to get its employees back on Earth ASAP.
From Low Earth Orbit once you dip into the atmosphere you are committed. You have lost the energy to stay in orbit, so you are returning to the surface. But first you must get rid of the energy that it took a massive two stage rocket to deliver. Remember E=mv^2? In this case v is about 8,000 m/s so v^2 is about 64,000,000! It is a very delicate balancing act to give up this energy as slowly as possible, with a deceleration no more than about 30m/s^2 (3gs).
However when returning from the Moon, or Mars, you do have a choice, because you start with more than orbital velocity. Mars landers usually make multiple gentle passes through the atmosphere of Mars until they have eliminated over half the energy. But once they reduce their kinetic energy below orbital velocity, they are likewise committed. Automated probes can do this because machines have infinite patience. If it takes a week to slow down, so be it. But especially as they are crammed into the volume of a 7 foot by 7 foot closet for two weeks, the astronauts will not want to wait another week just to reduce wear and tear on the heat shield.
On the other hand if they travelled to and from the Moon on board a Starship they would have over a hundred times the volume. The interior of a Starship is as big as a jumbo jet, or a 3,200 square foot house. It is so big they could have a running track! Then ten tonnes of cargo will only occupy a tiny corner. And instead of the hundreds of switches on the control panel of the Apollo Mark II, they will have touch screens.
Sure hope we can down size and consolidate no few bureaucracies in the next few years...
Other wise Argentina will be more successful.
I suspect pretty much everything now in service will be obsolite five years from now when SpaceX uses Raptor 3, 4, or beyond to create a new falcon sized LEO lifter, with way more potential, and a next Gen Taxi to orbit and back vehicle..
Likely using fabrication and things learned on Starship.
Glad to hear mention of "other" re-entry trajectories, I have been doing writs on that potential for several years in comments on space channels and forums... nice to see its being considered finally.
I think Elon has gotten that concept now, and first attempt at a better glide path trajectory might be the next Starship re-entry.
He did a description that explained it superficially. But correct. Will likely be more forth coming after the test and data.
Crossing fingers! if it works well enough, will cause a paradigm shift of the magnitude that parts count did.
Especially for craft returning from the Moon, Mars, or even farther.
We'll know by the re-entry profile, how far from when the Starship is pushed out of orbit, that it begins to drop rapidly in a more ballistic palabara towards the end.
Hopefully they can keep it up as long as possible, and get enough thin atmosphere braking before the plunge into the plasma thick lower atmosphere.
I'll be glued to my screen watching the live feed! Hoping this one makes it home in one hunk!
Just so the Nay Sayers have to replant their goal posts on SpaceX... 🤭
The difference is that Dragon has to deal with much lower reentry speeds than Orion, due to it trajectory coming from Lunar orbit rather than low earth Orbit
Edit: just realized this is mentioned in the video
Dragon can be used as a Taxi for Starship's crew, avoiding Starship's critical launch/reentry and refueling stages. Dragon remains in low earth orbit, like the ISS, awaiting Starship's return.
Technically Starship could do two burns to slow Starship down below 11 km/s for high orbit to 7.8 km/s low earth orbit, avoiding the issue.
@@djohannsson8268 the amount of fuel used would be much higher and HLS isn’t designed to take Humans for that length of time, secondly, the slowing down burn you mentioned would require and immense amount of fuel, more than they have already prepared for due to the fact that Starship might not even be returning from Lunar orbit after the landing
Use double counter rotating wiffle balls for cooling
It seems a bit unfair to blame NASA for the expense when they are forced by congressional fiat to use what they have.Don't forget that SLS was mandated by the senate as a pork barrel project from the first, hence the SENATE LAUNCH SYSTEM moniker.
yeah. It’s not only Nasa in this program
What a WASTE OF TAX PAYERS MONEY!
The damage shown here is far more extensive than first reported and subsequently reported in later updates. There is no way this craft will fly with that kind of problem. What I heard originally was that "skip" technique used to slow down the craft probably caused the problem and could be adjusted. They planned to change the bolts and adjust the technique. I think it will take far more than that plus it will take proven flights to confirm results. They better have alternatives ready because for this one problem alone they are talking about at least an 18 month repair process. SpaceX has developed a team of experts devoted to heat shield technology and they may be able to help.
So they don’t want to do the safe thing the same as they didn’t want to do the same thing with at least two of the shuttles that burnt up or exploded because they didn’t want to do the same thing because the then president at the time wanted to see the damn things launchedonly have one explode shortly after leaving the launchpad killing everyone on board
Why the ai voice
We will try to improve this
Artimus made one flight, and it’s considered to be human ready! How many flights has falcon heavy successfully completed! NASA willing to waste money! It’s not their money!
Is the problem with nasa or actually with congress?
Yeah. Artemis is a big project that even involves many countries
spaceX already made the dragon to land at the launchpad.
So why use it to land on the moon just make it bigger
Bah,
sending a drangon capsule into lunar orbit seems like an unhealthy idea to me.... rather I think the Lunar Starship will be able to go to and from LEO directly, and the drangon will be used, thanks to its certification for launch and re-entry human, to carry astronauts "up and down" from LEO!
And, why not, on the way there or back Starship will attach to the ISS for a few days of rest for the astronauts!
I find it amazing that NASA would be willing to cut back SpaceX to dump money into their boondoggle!
SpaceX has so much revenue coming in that they have already written NASA off as just another customer. In 2025 SpaceX will make more than twice as much revenue from DoD contracts as from NASA. NASA engineers are big fans of SpaceX Because they get twice as much bang for their buck. The only reason NASA has not written off the United Losers Alliance and Body Odour is because most of its funding has Congressional requirements to use them in preference to SpaceX because Musk refuses to bribe ... er ... make "campaign contributions" to people he does not rrespect. NASA is upset that Congress has refused to fund the Mars Sample Return Mission but the project leaders know that Musk will ride to their rescue because MSRM is vital to his own interests. In particular I see no technical reasons why SpaceX will not launch a Starship to Mars in the window in late 2026 because of all of the experiments which his team need to perform. Because the probability of settling into Mars Orbit successfully in 2027 after a six month journey is at this point only about 70%, SpaceX will probably offer deep discounts on transportation to Mars Orbit. The two tons of the MSRM will fit in a small corner of the vast cargo hold. And it will have saved the mass that it needs if it tried to go to Mars on its own. And that leaves another 95 tonnes for other potential payloads.
Boeing is always late, over budget and takes too long to fix things, which they will have. SpaceX Dragon 🐉 is a better ship. Good luck 🍀 Boeing. You’ll need it.
All the best for Boeing on the upcoming attempt
Crew Dragon is not an alternative.
1. It does not have a life support system that can keep its passengers alive for three weeks, like Orion.
2. It cannot reenter at 11km/s (about 25,000 mph). It is specifically designed to reenter from LEO at 7.5km/s (about 18,000 mph).
Human-rating is political. After a SINGLE flight NASA declared the Senate Launch System to be crew-rated because CONGRESS demanded that its campaign funders be authorized. Falcon-Heavy has had *seven* flawless flights, and yet it remains politically impossible for NASA to approve it for crewed flights..
However because the fundamental principle of Starship is that it is reusable after landing the HLS on the Moon SpaceX will undoubtedly try to return it to LEO, where it can be refueled and sent back to the Moon, or to Mars. Since the HLS only carries a crew between the Orion or Gateway and the lunar surface, there is no hurry to get it back to Earth. That means instead of a single pass through the Earth's atmosphere where Orion must discard twice as much energy as a return to from LEO, the HLS can make multiple gentle passes, in which the temperature of its stainless steel hull never reaches the about 900°C at which stainless steel starts to deform. This will take several days, but machines are patient. Once the HLS has reduced the maximum altitude of its orbit to match the orbital refueling station it will use the last of its fuel to raise the minimum altitude above the atmosphere, and rendezvous for refueling.
While Crew Dragon will never be suitable for flights beyond LEO, just as Shuttle was never suitable for flights beyond LEO, Starship is being designed for the six month flight to Mars! A two week jaunt to the Moon will be like using the same car you drove to California and back on vacation to pick up groceries! Note that a spacecraft returning from the Moon must eliminate the same amount of kinetic energy to enter LEO, as a spacecraft returning to Earth from LEO. So once SpaceX safely recovers a Starship from Orbit, currently expected early in 2025, it will have demonstrated the ability to recover an HLS from Orbit to LEO. Then we must ask, what would be easier,
1. flying astronauts in the cramped confines of Apollo Mark II to lunar orbit, transferring to an HLS in Lunar Orbit, then transferring back to the Apollo Mark II in Lunar Orbit for the return to Earth, or
2. flying them up to an already orbiting fully-fueled HLS, flying straight to the Moon and then flying straight back to LEO, where they can take a Crew Dragon back to the KSC.
Note that on Orion, or Dragon, the four astronauts have only 11 cubic metres of space. Starship has over 1,000 cubic metres of volume, as much as a 3200 square foot house, or the entire space inside the hull of a jumbo jet! Starship can even accommodate a 30m/100ft jogging track!
Great ideas, thanks. I will find more about all of this
From “Space Jockey” by Robert A. Heinlein (1947):
“... The traveling-public gripes at the lack of direct Earth-to-Moon service, but it takes three types of rocket ships and two space-station changes to make a fiddling quarter-million-mile jump for a good reason: Money.”
Earth’s space station : Supra-New York
Luna’s space station : Space Terminal
Earth to orbit and return : catapulted streamlined winged space craft
Station to station : never landing shuttles, almost all cargo space
Luna to orbit and return : ugly duckling pogo sticks
- - -
In other words, the requirements for the most frugal means to reach the moon have been known for a long time.
What's missing : an orbital resupply station around the Earth and one around the moon.
I think the government should drop all relationships with Space X. It seems it has nothing to offer only creating delay after delay.
SpaceX?
What do you mean?
sls rocket is pure trash
Why not just use Dragon to LEO where a fueled Starship lander would be waiting to go direct to the Moon? Land / take off and rendezvous with a Dragon in LEO for re-entry. The whole gateway thing is far too complex, and we'll be waiting till 2050 for Boeing to pull their finger out!! Boeing and SLS are a complete waste of time, as is Gateway