welcome everyone it's incredible to be here again today on elon musk evolution in today's edition
we are looking at the world's richest man elon musk as he revealed the science behind raptor 2
a powerful rocket engine produced by spacex if you're interested to find out then stick around
till the end of this video and don't forget to press that big thumbs up button and subscribe to
our channel as plans towards getting humanity to mars continue people across the globe have
been talking about this new rocket engine named raptor 2. this is the latest version of the rocket
engine which elon described as a finished version compared to how it was in the first version raptor
1. musk described raptor 1 as a crazy christmas tree that has a lot of things wrapped around it
compared to raptor 2 a massive number of things have been deleted which makes it seem spacex and
musk are ready to land us on mars much sooner the world's richest also took his time to talk
about other technical details of raptor 2 such as its operating pressure and the absence of
torch igniters among many others stay tuned as you listen to the story in full elon musk explained
the wild science behind raptor 2. spacex and tesla ceo elon musk is dead on bringing humanity to mars
not only is it musk's plan but amazon boss jeff bezos through his blue origin plans to see humans
on mars very soon achieving this remarkable feat by spacex and elon musk requires a vast spacecraft
powered by the new rocket engine raptor 2. this is the future of spacex and musk's touchdown to mars
an engine capable of taking us to mars and beyond the raptor 2 turbo machinery has been
replaced with a more powerful unit this means the engine can fire up more fuel into the engine
spacex has been developing its rocket engines for several years with the new version of raptor 2
they are about to take it to a new level raptor 2 is more streamlined in design than the first
version of the raptor the raptor 1 looks like a christmas tree spaghetti pile but raptor 2 has
been dramatically simplified it includes less convoluted tubing and plumbing lines
in april musk showed off a new batch of new raptor 2 engines at spacex's starbase facility in texas
the raptor 2 will be used on the first orbital flight of the company's starship mega rocket
later this year also according to musk's tweet the raptor 2 rocket engines at starbase produce over
half a million pounds of force each the raptor 2 engine runs at a 300 bar main pressure chamber
designed for the starship spacecraft the updated raptor broke the previous record it
had set in 2019 especially when compared to those utilized for the space company's other spacecraft
the new engine beats the 2019 record of the original raptor
outputting 268.9 bar which was an achievement two years ago as it surpassed a russian rocket
since then the engine has been made for the use of different rockets of the company
elon musk's detailed explanation of raptor 2 to everyday astronaut tim dodd musk gave tim dodd the
everyday astronaut anchor a detailed explanation of the science behind spacex's raptor 2 engines
musk gave a detailed technical description of the engines and how the engine has been upgraded
compared to what was seen in the first version of raptor 1. he explained that raptor 1 has a lot of
stuff wrapped around it it was a completed engine while for raptor 2 a massive number
of things have been removed deleted combined and simplified on raptor 2 versus raptor 1
and that the raptor 2 looks like it's not finished but it actually is musk while pointing at raptor
1n raptor 2 explained that it's not super easy to see but you can compare how much less there
is if you just look at just eyeball the fiddly bits level here versus the fiddly bits there
raptor 2 has an operating pressure of 300 bars raptor 2 has a standard operating pressure of
300 bars as earlier mentioned which is kind of crazy for a rocket engine musk said 300 main bar
chamber operating pressure is the total highest pressure of an operation rocket engine ever
the following best would be rde 180 with around 267 bar talking about blowing up engines musk
said they have blown up a lot of engines he said he had lost count of how many but they might have
blown up to 30 engines he further established that any technological development is about how
many iterations do you have and what is your time and progress between iterations if you have a high
production rate you can have a lot of iterations and you can try a lot of different things but if
you have small numbers of engines you have to be much more conservative because you can't risk it
melting and cooling in raptor 2. when asked about cooling and the trick used in keeping chambers
from melting musk stated that right now we're optimizing raptor 2 for robustness as opposed to
the performance i think broad brush stroke we're kind of overdoing it on the film cooling front
so we have quite a high percentage of head and foam cooling and throat foam cooling and we're
probably losing a couple of points of efficiency because of the cooling but he further stated
that it's better not to have melting chambers and fine-tune for performance later no torch igniters
in raptor two how would it start for raptor one there were torch igniters in the main chamber
but raptor two does not have a torch igniter tim dodd asked about how it is then lighted since
the raptor 2 has no torch igniter musk replied saying it's a secret sauce he won't state that
musk emphasized he won't like to reveal a state secret but he maintained that producing the raptor
2 without a torch igniter was not super easy it was a significant improvement getting rid of the
torch igniters in the main chamber but the act was a significant complexity reduction reduction
in failure modes lowered the production cost and that makes it the engine lighter simplification
in raptor 2 when asked about the simplification of what appears to be a ton of valves and whether
he combined a tone of parts into one he said it's always better to delete things rather
than optimize them the biggest mistake made by smart engineers is optimizing a thing that does
not exist dodd again asked what he would like to remove from this new raptor too he said he would
delete more of the little fiddly bits small pipes and wiring chamber pressure and impulse
chamber pressure is another critical factor in the raptor 2 engine elon stated that in the
entire history of spacex we have only ever wanted to increase chamber pressure we've never wanted
to decrease it we've always wanted to increase thrust and we've never wanted to decrease it
and that we have put all effort into getting the chamber pressure to the 300 bar he further
mentioned that people are fond of quoting the isp he stated that in rocket engine many people quote
isp but what you really want to look at is the area under the force time curve for a given amount
of mass flow what is the area under the force time curve it's the area under the force versus time
curve the importance of the engine is to produce force so if you say isp you are making a bunch of
simple assumptions isp is not consistent now that we have seen the technical details of raptor 2
what is trending about getting humanity into mars people around the globe have their hands crossed
when would this fantastic trip to mars happen spacex is only waiting for the
environmental approval of starships launches from the public and federal aviation authority
especially as boko chica and the us people have a say in this the starship launch may probably
happen soon musk has been teasing spacex's mars mission enough to excite the public on social
media the reason behind this may be because of starship's capabilities and readiness
for its mission to go live soon however despite its businesses optimism and fast track musk still
said that the first mars mission with a human crew may begin a decade from now probably in 2031.
mars will not go anywhere but humans will try to reach mars within the decade
as the spacex ceo promised the raptor 2 brings a new tech for spacex which significantly improves
the quality of its launches with a new engine developed from years of research and trials
and that's it for today's edition of elon musk evolution i hope you had an excellent
time watching don't forget to click on your like and subscribe button if you have any questions or
suggestions don't forget to make use of the comments section below we would be happy to
give answers or clarification to it in our next video thank you guys and have a wonderful day