108 posts
Latest Posts by rocketobsessedperson - Page 4
Martian Twilight by lazyperson202
Captain Scorpo will never evade taxes or walk again.
The assembly of Apollo 4, which was an unmanned test flight.
Great photo. Poor birds though. A quiet morning suddenly full of explosive fury.
It’s sleeping in the oven! :D
You know where the source is by now.
beautifulwarbirds@gmail.com Twitter: @thomasguettler
Beautiful Warbirds Full Afterburner The Test Pilots P-38 Lightning Nasa History Science Fiction World Fantasy Literature & Art
A great photo during the Apollo 12 mission. I love the reflection, so this would appear to be a photo of both Pete Conrad and Alan Bean.
AS-202 S-IB/S-IVB Stage Separation.
The video is slowed down, in reality the time from the separation to the J-2 firing was under 4 seconds.
The S-IVB is the stage that put Apollo capsules on the lunar transfer orbit. Note that this is a Saturn IB upper stage, meaning this one never actually went to the moon, and only put the yet unmanned spacecraft on an suborbital trajectory.
The three small rockets are the ullage motors, small solid rockets used to create small acceleration, so the fuel settles own in the bottom of the tank and starts being fed into fuel pumps
And now we have the Apollo 8 launch. These were the first guys outside the Low Earth Orbit, flying right by the Moon. You can see the stage separation from outside, this time from the better angle and in color. Dem J-2 cluster though...
The S-Ic was running on RP-1 (airplane fuel)/liquid oxygen mixture, thus the orange bright flame. S-II on the other hand used liquid hydrogen/liquid oxygen mixture, which means the exhaust (water vapor) is invisible.
Around 1:28 you can see the vapor cone around the front of S-II, which appeared when the rocket was passing through the sound bareer, and disappeared shortly after.
After stage separation you can see that first stage engines are still glowing orange. The center engine however isn’t - is was shut down thirty seconds before (around 2:40) to avoid oscillations.
At the end of the video you can see the interstage separating, which was done to reduce the spacecraft's mass.
And this time a S-Ic S-II separation from the FREAKING APOLLO 11! The same rocket that put men on the Moon! This time from the external perspective (also known as “staying on the ground, NOT GOING TO THE FREAKING MOON!”).
As before, expect fanboying and trivia below.
You can see the first stage (S-Ic) cutoff, as a sudden decrease in the size of the exhaust plume. At that time, only four outboard engines were firing, the center one was shut down as expected, to prevent pogo oscillations (oscillations + rockets != good_things)
The big explosion was just the stage separation. Using explosives to separate huge stacks of explosives. Surprisingly a good idea.
Even though the S-Ic engines were already shut down, they still produced some leftover exhaust, which you can easily see
I think a lot of us know this beautiful video from Apollo 4 unmanned launch.
A lot of nerding, rocket stuff, trivia and technical info below:
Some of you may wonder: “Why am i not seeing the rocket exhaust?” or “When the second stage will fire?”. The answer is: They already are firing, since just after separation. S-II (the second stage), unlike first one is fueled by the liquid oxygen-liquid hydrogen mixture, which is invisible when burning. This is also (in)visible on Space Shuttle Main Engines (SSMEs). What you can see, is the high temperature heating up and burning the the S-Ic and the interstage.
The S-Ic (first stage) and S-II (second stage) separated in a somewhat unusual fashion. Usually an interstage (the part holding stages together) is separated with a lower stage. In Saturn V however the second stage engines occupy so much space, that a “direct” separation could have destroyed S-II engines, so the interstage was separated a few seconds after the first stage to avoid that scenario.
The first, bright fire was a shaped charge (an explsive) used to break split the rocket in two. How else do you think you could separate a thing THAT big, THAT quickly?
The cameras were then dropped from the rocket (as seen at the end of the video) and picked up from the ocean.
Okay, that’s not a real rocket, but I just love KSP. Heh, I’ll probably also spam it here, it’s my personal blog :P
If anyone asks about mods - it’s scatterer (still WIP - NOT MINE). And it’s so pwetty :D
Hello.
I’m a normal human person.
Blah blah blah hello, this is a first post blah blah blah.
I’ll try not to spam everyone that follows me with too much rocket porn....
...no, not THAT kind of rocket porn. Great, now I’ll need to find some brain bleach...
Anyway, informations. I’ll probably post/repost here some rocket/space porn, awesome space stuff and possibly ponies. Don’t kill me (too slowly), pwease.