this video is sponsored by brilliant. Hey hey you Marcus house with you here and
yet another action-packed week of space news in case you missed it last week
SpaceX's team at Boca Chica Texas adopted a puppy which came in super
useful this week the test tank at Boca Chica sn7 had its second and final test
to destruction meanwhile sn5 prepares to hold our full attention in the upcoming
weeks having just been moved to the launch site for a whole new round of
testing we have spotted some amazing new information on starlings user terminal
prototypes which will be used by customers to connect to the satellite
constellation rounding out all of that space goodness NASA remains confident
that the Mars 2020 perseverance rover mission will launch on schedule so we
are now eagerly awaiting that launch now less than a month away the new test
standard Boca Chica which was preparing for the arrival of starship serial
number five or SN 5 has been continuing and the workmanship with this stand is
really impressive it seems to me that SpaceX is really trying to put this
together not so much as a quick prototype anymore but it's something
they can see that to be a more permanent fixture
I think this test stand represents a deep insight into how SpaceX is
currently operating this says to me that SpaceX is confidence continues to grow
based on the tests from SN 4 well that's before it exploded really though
everything here with the exception of the final accident that caused this
explosion had been going really very well SN 4 past all pressure tests and
the static fire test seemed to be fine the explosion caused by the quick
disconnect system failing to well quickly and successfully disconnect
caused highly explosive fuel to be released at that point a spark was all
that was needed for that field to quickly live up to its full potential
until that point though SN 4 looked very close to a real flight so the
responsibility of the first full-scale starship flight has now been passed to
SN 5 while we might have expected SpaceX to have tested SN 5 by now we see more
evidence of the company's growing confidence in the
manufacturing of these prototype construction techniques the sn5 and sn6
have been sitting together in the mid Bay just waiting for their opportunity
to shine now I say medbay instead of high bay this week as Elon Musk tweeted
out a terrific perspective of the two vessels here with the title to starship
tanks in the mid Bay now I guess the term high bay in future may well be used
for the next much taller version of this structure which will be high enough to
fully stack a super heavy booster so yes the angle of this shot really does help
to illustrate the huge size of these tanks of course just a few days ago the
SN 5 was rolled down to the launch pad to begin its initial phase of testing
that being pressure tests with liquid nitrogen
now the footage here of SN 5 rolling down the road is a sight I have not yet
gotten fully used to we have seen this scene a few times now but again when
compared to regular sized road vehicles you really do get an idea just how
massive these full-sized prototypes are slowly but surely the prototype rolled
its way onto the site riding on top of the roll lift vehicles here once at the
destination SN 5 was lifted up onto the test stand which already has that
hydraulic ram structure in place that will push upwards during pressure
testing to simulate comparable forces that SpaceX as a raptor engines will
throw at while in flight now my bet is that SN 5 will become the first
full-scale starship to actually fly let me know what you think in the comment
section now the other big event of the week of course was all around SN 7 which
is a smaller version of the full-scale prototypes such as SN 5 the tank filled
several roles in the ADA relieve design process spacex sought to deliberately
probe the constraints of the tank and move well beyond those limits make no
mistake though this was an intentional test to destruction while the first test
back on June 15th produced a small rupture in the tank the attempt this
week was meant to push beyond the tank boundaries to find out where they were
the tank was loaded with liquid nitrogen which is of course non corrosive non
flammable and extremely cold they do this instead of using them much more
dangerous liquid oxygen and quit methane needed for an actual flight
this way when a rupture occurs there is no chance for any explosion
so yes the tank reached the maximum amount of pressure it could handle and
then burst here ejecting the full tank volume of liquid nitrogen with enough
force to actually lift itself and the test stand right off the ground now the
destruction of the stainless steel tank meant SpaceX really ramped the pressure
up interpreting the video we can see first a split around the lower half of
the tank almost immediately the tank looks to have split right open in a
number of areas Boca Chica gal of course on scene to capture this here as always
just awesome to see the entire tank pop up here and then sink back down into the
huge nitrogen gas clouds now again the size of this tank can be quite deceiving
for those unfamiliar this tank and the full-size prototypes and nine meters
wide here is a shot of the SpaceX team working on it
even though this is a much shorter tank the amount of liquid nitrogen that
spewed out here over the space of a second or two would be just crazy as a
rough guess based on tank volume it's likely close to 450 thousand liters of
liquid nitrogen dumping out here at high pressure no wonder it lifted the entire
tank up so yes afterwards SpaceX was quite tight-lipped about the pressure
test which is likely where eelain's newly adopted pet comes in this is Zeus
the Boston Dynamics dog this puppy was immediately sent out to sniff the scene
on the exceptionally cold grounds around the sn7 remains rumors spread quickly
about why SpaceX was being so quiet about the pressures that the tank was
able to exceed the gossip suggested that pressure tests didn't achieve the tanks
design parameters I think differently about this though my immediate thought
was that we'd likely get some very cool footage along with some pressure test
stats at a later time we'll know soon if that's the case when
SpaceX releases that information now if you want to know more about why these
test tanks are useful and how it worked back with serial number two I talk more
in depth about that in this video while you're here of course please do consider
subscribing and taking a quick second a tap of that like button there is loads
more news coming with crew dragon and Starling as well and I'd love to share
all that with you now I just wanted to say a massive
thank you here to RGV aerial photography for taking yet another beautiful flight
here to capture the scenes around Boca Chica
just after the sn7 tank tests this was just before the SN 5 had been moved to
the launch site now I'd love to be sharing more of these flights with you
but as I'm sure everyone is aware that has some real cost to it if you're
loving what they're doing here as well consider following and perhaps even
contributing with patreon one of these flights cost around three hundred
dollars I believe so a little assistance with that funding will help them do this
more often now Space Agency officials at NASA say
that they're confident that the Mars 2020 perseverance rover mission will
launch despite special measures taken during the pandemic now the Mars rover
perseverance is scheduled to launch on an Atlas 5 rocket between July 20 and
August 11 as we see here the Boosters were successfully attached earlier this
month in a delicate and precise ballet of movements that booster segments were
raised into a vertical position before being hoisted up inside the Hangout just
incredible to see the sheer scale of these boosters and the effort of ground
crews to make this all happen that often goes unseen it struck me while watching
this just how vital it is that milestones like this go as planned
just one hiccup in the process to the launch date would mean another very
lengthy wait for a launch opportunity development and testing not only of
launch vehicles is key but even the rover itself back in the final quarter
of 2019 underwent a rigorous series of performance testing from shaking
deployment of the rover legs thermal vacuum testing sample cache tests and
drive tests what a beautiful piece of hardware that perseverance Rover is now
there's a fascinating demonstration mission onboard the rover that is
designed to prove that oxygen production is possible on Mars with over 95% carbon
dioxide on Mars oxygen can be extracted called the JPL Mars oxygen in situ
resource utilization laboratory or moxie for short the unit is essentially a fuel
cell in Reverse where ingests carbon dioxide from Mars's atmosphere and heats
it up over 800 degrees Celsius and then separates the oxygen atoms from the
carbon atoms of course while the ability to breathe is critical there is also the
ability to produce fuel on the surface of Mars for return
trips to earth a positive result in this demonstration mission could very well be
the catalyst to NASA declaring a dedicated mission for oxygen production
that is of course unless SpaceX achieves that first somehow I think this could
very well be yet another partnership project between SpaceX and NASA in the
future now this coming Saturday June the 27th the date that this video will be
released Robert Zubrin will be participating in a question-and-answer
session titled how to get to Mars which I'll certainly be jumping into now
Robert Zubrin is of course the president of the Mars Society and is a super
passionate advocate for human exploration to Mars
Zubrin has known Elon Musk for nearly 20 years or so and he was one voice back
then that helped convinced Elon to look at solutions such as his Mars direct
plan and he spent a huge chunk of his life trying to figure out the best way
to design a mission to the red planet and now that SpaceX are building the
Starship vehicle capable of just that there is certainly a great shared vision
between SpaceX and Robert Zubrin and when it comes down to it the story of
starship and its ability to be fully reused is just the start of the future
legacy of humanity expanding outside the Earth's sphere of influence now what is
just as important for human survival on Mars is everything that goes along with
well human survival right spacex a starship may well be the vehicle that
will get us there but there is a heck of a lot more thought needed about the
equipment that will be required on the surface of mars and of course on the
long journey to mars and this is where robert zubrin expertise is critical so
yes this is sure to be an event not to miss if you want to check it out the
link is in the description below as the awesome crew dragon endeavor mission
continues we've seen just one of its two crew Bob Behnken undertaking yet another
spacewalk helping Chris Cassidy here to replace aging batteries on the
International Space Station the pair removed five of the six old nickel
hydrogen batteries and installed a two of three new lithium ion batteries along
with of course installing two out of the three adapters that will complete the
circuit to the replacement batteries as well now Chris and Bob have both
undertaken seven spacewalks each in their
career so very impressive there's another spacewalk scheduled at the start
of July to complete this segment of work with this exercise so far taking just
over six hours to complete having Bob undertake this activity was always a
good possibility as we saw in the training footage from a recent video
very well done Bob and Chris on completing another lengthy spacewalk and
we're looking forward to seeing some more awesome footage as this task is
successfully completed soon now just recently we've begun to see images of
SpaceX as StarLink user terminals and they're almost exactly as you would have
imagined them from Ilan's tweets here back in January saying that the Starling
terminals will look like a thin flat round UFO on a stick with motors to self
adjust to the optimal viewing angle of the sky the instructions are to simply
plug it in and point it at the sky no training required now as we can see from
the terminals here that looks to be very much what we can see these images were
shared on the SpaceX subreddit by reddit user dark penguin 22 we can see from the
label on the side of the photos here wording saying that these are the
property of SpaceX and are of course prototypes also that these units are
intended only as demonstration units for now so interestingly they've been
spotted at SpaceX s facilities in Boca Chica here where we can see the top of
them as well now the wonderful thing about these user terminals is that they
work almost anywhere in the world as long as you have a view of the sky these
will connect to the satellites hurdling around the earth at a speed of around
seven point eight kilometers per second at an orbit around 550 kilometers in
altitude now because there will be so many satellites in view at any one time
all the terminals we'll need to do is point at the sky and it will be able to
connect to the fastest broadband satellite network ever created SpaceX is
aiming to offer StarLink Internet services worldwide if that has a great
uptake and becomes a real competitor to the largest Internet service providers
this will not only help SpaceX fund and speed up production for that ultimate
goal of colonizing Mars but it will also provide affordable high speed broadband
Internet to locations where access has been slow unreliable or completely
unavailable you know the real size of this network is hard to fathom having a
constellation of at least twelve thousands
satellites for the initial full rollout now the ninth set of version once
styling satellites had been planned for launch this week but it has been delayed
a few times now with SpaceX yesterday saying they're standing down from
today's star ignition the team needed additional time for pre-launch checkouts
but the Falcon 9 and the satellites are healthy and SpaceX will announce a new
target launch date once confirmed on the range a beautiful shot here by Greg
Scott of the Falcon 9 patiently awaiting of the new launch time which by the time
this video is released will it likely be scheduled in the Falcon 9 booster for
this mission designated be 1:05 one has already flown four times so this will be
its fifth flight its previously launched both crew dragons demo one mission and
the radar set mission from 2019 and to styling missions this year one in
January and the other in late April this will be the second ever booster to be
recovered five times if it does land on that drone ship so this will be an
interesting one to watch even though we've seen plenty of Falcon 9 flights I
never get tired of them the separation that main engine cutoff the re-entry
burns that booster landings and the deployments the second stage I always
find very interesting to watch as well it's just unreal how fast that stage 2
is accelerating as it empties out so just after booster separation and the
ignition of the second stage acceleration actually seems quite slow
at only around 0.3 g the rocket equation though is an incredible thing
although the thrust of the merlin vacuum engine is reasonably constant what
changes is the total mass of the vehicle as the fuel empties out that thrust has
a greater effect on the acceleration right before second engine calf that
same force of the single Merlin is accelerating the second stage along with
the payload at a much higher rate gaining well over 1,400 kilometers per
hour of velocity in around 10 seconds just prior to the engine shutting down
that is getting quite close to 4G now speaking of the rocket equation this
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do get in touch in the tiling the bottom left today we have my video the other
week talking about StarLink and the awesome fairing separation footage in
the top right is my latest video in the bottom right content that youtuber
selected from my channel just for you thank you everyone for watching and
we'll see you all in the next video
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