hey everyone in this video I'm going to
八哥下载
YouTube字幕视频下载 Https://8bage.com
be talking about the sound suppression
water system used at the mobile launcher
platform for the space shuttles for
their launches so the basic overall
point of having the sampler suppression
system is to alleviate the stresses on
the space shuttle when when it's rockets
when the solid rocket boosters firing
and when the spatial main engines are
firing the acoustical energy can reflect
off of the bottom of the launcher and
then and excite some of the the resonant
frequencies in the space shuttle which
could shake it pretty much apart so this
assistance actually there's actually a
lot more going on and I had initially
thought when I started looking at it but
pretty much I had these four sections
here and I'll go through each one of
them so the first one I look at is this
one here which is the side view so you
can see here this piece right here is
the mobile launcher platform up here you
have the solid rocket booster and you
have the space shuttle here with it's
there should be three but this is just a
side view so there's a spatial domain
engines for the ssmes and then the solid
rocket booster with the SRBs again it's
a side view so and then this here down
here is below the actual platform and
this is called a flame deflector and so
everything in green in this entire thing
should the should be where the water is
actually coming out of water is blue I
thought that makes sense and then kind
of the flames or exhaust is color coded
red okay so there's a couple things
happening here and I'll try to go
through it as best I can in the most
logical way but pretty much one so the
first thing that starts up I think it's
six to seven seconds before actual
liftoff is that the Space Shuttle main
engines ignite and you can see that when
the when the hydrogen burn off sparks
which is another one of my videos when
those are kind of when those have been
going for a couple seconds then the
the SS enemies like night and then so
what you have going on down here is
there are these 16 nozzles which spray
out water and kind of coats and coats
down the on the flame deflector to
absorb any of that energy from one the
actual ssme start firing I believe and
I'm not sure because I couldn't find
enough information on this but I believe
there's something there's like 22 water
nozzles inside this exhaust hole so
these two plate these two things are
called exhaust oles their holes going
down through the actual mobile launcher
platform and I think there's 22 nozzles
in there but I don't know exactly where
so I didn't draw them but those also
spray water when the SS enemies are
start enough so this so these um since
this is a side view these 16 miles which
is this kind of a blown-up view they're
lining going across 16 of them across
the flame deflector and then the water
sprays out and down the flame deflector
on both sides as you can kind of see
here these are the openings and the
nozzles and then the water flows down on
the ssme side and the SRB side so so
there's the 22 nozzles up here then
there's its these 16 nozzles here for
the Space Shuttle main engines then for
the solid rocket boosters or SRBs it's a
little bit more complicated on this side
so a simplified version is that so that
you have the right exhaust going down
through the exhaust hole and actually in
the in the SRB exhaust so there's
actually two holes there's the there's
the primary flame hole and then the
secondary flame hole which I'll talk
about down here but pretty much there it
looks like from dividuals that i've been
able to look at it looks like there are
two nozzles in each hole so there's two
solid rocket boosters so it's kind of a
top view here there's two solid rocket
boosters let me back up for one second
this hole right here this is just the
top view of this so I'm going to just
turn this on its side like that
so this is the Space Shuttle main engine
hole so this is just one big opening for
all three of the of the main engines and
then again there's probably 22 nozzles
in here somewhere but I'm not exactly
sure where this dotted line these two
data lines are just the top of the flame
deflector and then these there's not
sixteen here but there's actually 16
nozzles lining the top of this spanning
the width of the flame deflector cavity
okay so since there's two solid rocket
boosters on the stage leverage two
separate holes or two separate exhaust
holes and in each one there's you can
kinda see here I might be a little small
in the video but you can kind of see
there's two different sections of it
there's the primary flame holder and
this is where the space show where the
srvs are located so in my notes getting
around a little bit but here this is the
primary flame hole this is the secondary
plane flame hole and what's happening is
there are these two nozzles in each of
the in each of the exhaust holes and
those have water being fed into the
exhaust hole okay and then and then
again when these so the solid rocket
booster lights at T equals 0 or t minus
zero so right at right when the time has
counted down all the way to zero so so
this this water glow reforming the water
from the 20 miles is already flowing and
then on the SRB lights what they found
was that um the the system in here with
these with these nozzles and I'll talk
about these water bags is used to
alleviate the stresses on the wings and
the ailerons from when the actual SRB is
ignite initially because when they had
their first mission so on sts-1 they
found that they were getting
overpressure
overpressure indications on the space
shuttle and they need to alleviate that
alleviate those stresses somehow so they
have this thing called the over pressure
over pressure or over pressure
suppression
or protection and that's where these
these two nozzles in each of the SRB my
exhaust holes come from and the waterbag
so so I know I skip around a little bit
but it's but we're going to go down to
here then and so there's the two exhaust
those there's a primary flying hole and
this is the bottom view now so we so
we're like standing down here looking up
into the hole and so this is for one of
the solid rocket boosters so you can see
the nozzle is regular nozzle for the
solid rocket booster and this is the
primary flame hole so this is where the
actual you know when it lights it'll
come right out of this hole and this is
the secondary flame hole so in the
primary flame hole this is again also
just looking at video picture but it
looks to me like there are these water
bags lined around the actual rocket
booster in the primary flame hole and
from the video it looked like these were
yellow like yellow water bags and then
these over here are lining the secondary
flame on these look like they were red
water bags and again these two things
here are these two nozzles that are just
flowing water and so these water bags
are just holding water they're not
they're not injecting water out into the
into the actual flame holes so what they
would do is they would dampen the
blowback pressure from when the SRBs
were initially ignited kind of similarly
to how like a water balloon if you drop
it on you know the pavement sometimes it
doesn't break it will just absorb the
energy so that's what these would be
doing with the acoustical sound waves
okay
so then that's all well and good so when
the so before going back again a little
bit before the actual launch the SS
enemies are lit the water's flown here
so the water forum here the front
flowing from the 22 nozzles in here and
then when the SRBs are ignited you may
have the overpressure suppression system
attract these two nozzles and then the
water bags in the exhaust hole and then
when the shuttle lifts off
once I think it's a it says in some of
these documents that when it's about 300
feet off of when it's risen 300 feet
above a platform you start getting the
acoustical energy reflected off of the
metal plates on the mobile launcher
platform of the MLP seen here and to
dampen this out they have the six huge
nozzles called rain birds which flow
about 300 thousand gallons of water over
the actual platform the pipes so there's
a water tower located a little farther
away from the platform and it's it's the
height is about 290 feet off of the
ground and these pipes feed each of the
six there's only two shown here but
feeds each of the six rain birds and the
pipe that leads from the water tower to
these rain birds is seven feet in
diameter which is extremely large and
then they fly these nozzles which are
there less than seven feet I think a
couple of them are maybe like 40 inches
or I guess it'll be about 4 feet and
then like two and a half feet diameter
nozzles and those just flood the the
mobile launcher platform with water to
absorb the energy after the space
shuttle is lifted off higher than 300
feet and I guess that's kind of an
overview of the sound suppression water
system I used if you have any questions
let me know or if I didn't explain
something well enough let me know and
I'll try to fix it or if I'm wrong on
any of this stuff because this is all
it's not it's not just speculation but I
this is from visual clues where I think
that these are the water bags but I'm
not a hundred percent sure so if you
have any information please let me know
thank you