Originally posted by Credulity Kills
Thanks internos.
I posted this in the other thread but I'll do it again here:
The flash that you see is a shuttle thruster firing - mostly likely an automatic one. Thrusters are used by the shuttle to maintain attitude or to
move to different attitudes when required. There's typically a deadband of a few degrees that the shuttle's computers will control within - if it
hits a attitude error of ~5 degrees (typical but that's modifiable) in any axis, thrusters will fire to correct the orientation.
As mentioned above, the shuttle sheds quite a bit of ice from different places. It's required to regularly dump water overboard (a byproduct of the
fuel cells), uses a FES (Flash Evaporator System) to reject heat before the radiators are deployed, and even expels human waste. All of this stuff
freezes almost immediately upon hitting vacuum.
The object that you see trending right to left (object 1) is likely frozen crap (figuratively or even literally) that came off the shuttle. The flash
is definitely from the contact of the hypergolic fuel and oxidizer from some nearby thrusters. While the flash is initially visible, the bulk of the
thrust comes in the moments after as the gaseous byproducts of the combustion expand. That expansion of gasses is what caused the change in direction
of object 1 and made it accelerate. Object 2 (AKA the first streaks) which appears to shoot past object 1 could be more ice or the clumped up residue
that collects in the thruster manifolds (unburned fuel that freezes).
The second streak is something I hadn't seen before looking at the video again just now. The thruster firing pushes debris in its path outwards -
more or less radially form the thruster itself. I say "more or less" as the thrusters are, of course, directional. Debris directly in front of the
thruster will be pushed quickly away from the jet in the direction that the jet faces. Debris which is nearby will get a glancing blow of gas that
has already dispersed (and thus decelerated) therefor it will tend to move more slowly and not directly outwards.
Streak 1 is due to debris very close to the thruster (or even in the thruster manifold) whereas streak two is due to more distant debris that got a
glancing blow.
The analysis of the video in the above post makes the assumption that the objects are very far away, yet we've got no reason to assume that.
As for the camera moving away 65 seconds later, I really don't think that tells us anything. The INCO officer in Houston will move the camera
regularly and will usually point it at the cargo bay. Besides, if there were real concerns about exposing the existence of secret craft in orbit,
NASA would just they delay the public video feeds or just stop them all together.
As for the video drop-out, this is hardly unusual. Video from the shuttle or ISS requires Ku-Band communication with the TDRS satellites. Ku-Band is
high bandwidth and thus in high demand from other non-NASA users. On the ISS right now, Ku-Band is only available about 30-35% of the time. The
lower bandwidth S-Band is available about 80% of the time but is unable to transmit smooth, high FPS video like you see in this video.
That's my $0.02.
[edit on 4-5-2008 by Credulity Kills]
yeah i didn't bother to read past this post in this thread, so what, the mods will warn me and take away 500 points and i will be a month or two off
of getting my background image from the ATS store? coooool lol
you are saying the thrusters went off but the planet doesn't get smaller, the camera stays in place, and nothing moves as we see this "flash" of
"light" from "thrusters"?
can you insult us anymore?
a thruster would move the camera for some reason, and move the camera on the w/e the camera is on ISS/STS or w/e, unless of course nasa was shooting
STS 48 with a cam NOT on what is was recording from
seriously...you are trying to tell ATS that thrusters went off, but the image doesn't move? the planet doesn't move or change as the thrusters go
off? i can explain my problem with what you said more if you want, but it's been discussed
if a thruster went off, the image would change, something would move relative to what the thrusters did, the only things moving are the unidentified
flying objects and the objects that seem to go at them lol that seem to come from earth BTW, i have read in this video it would have been australia
for real you are saying "thrusters went off"
so if i hook up a camera to my honda civic and watch my bro do some bike stunts on his motorbike as i hit my "thrusters" in the camera shot you are
gonna see what?
some kind of movement relative to how fast the civic and the bike are traveling when i hit my "thrusters"
i just don't get it, i really don't............
unless thrusters are just flashes of light, and don't move w/e had the camera on it for STS 48
if thrusters don't move w/e the STS 48 camera was on, then why tell ATS the flash of light was thrusters when anyone who's not a retard knows that
when you move something attatched to a camera, the image from the camera will move too....not to mention all of the other stuff in this video, watch
the other STS videos, is that all ice floating around our planet in space too? lol and thrusters? the tether incident is ice too lmao oh wow
the camera doesn't move, the planet doesn't move, the image doesn't move, if the "thrusters" don't provide some kind of movement for w/e purpose
WTF are they there for?
at so many miles above earth a "thruster" doesn't make a planet smaller, when it goes off and moves either, up, down, right or left? maybe
diagonally to the left and up?
the image from the camera is stable the whole time, so really what are you trying to tell ATS when you say what you did about "thruster" and STS
48?
seriously, i hook up a video camera to the back window of a car, someone is behind that car with a motorbike, doing some wheelies or something who
knows/cares, but when i hit the gas pedal the car accelerates, and the image that camera records stays still?
NO
but that is what you are trying to tell ATS with what you said, so unless you want to say "look, at so many miles above earth, a thruster won't
provide much movement and a camera on w/e the thruster is thrusting in w/e direction won't show movement, when you have a camera on something that
isn't really moving much, like earth BUT that flash of light was thrusters"
no moves
