@tony873004 Is It Venus passing behind Earth before the Sun does?
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The Orbital Mechanic
434 posts
The Orbital Mechanic
@andre9lli
Space nerd, still looking for my user manual. Fun facts and technicalities about space. In oxygen rich preburners I trust.
Katılım Mayıs 2020
254 Takip Edilen100 Takipçiler
Ever wondered what happens if you photograph the Sun at the exact same time every day for a year?
You get an #Analemma.
I used Antigravity and @matplotlib to render this comparison between 45° N on Earth and the same latitude on Mars. The results are wild! 🧵
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Orbital mechanics is just high-stakes geometry.
#Astronomy #Space #Mars #Python #DataViz #Matplotlib #Analemma
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On Mars, perihelion and the solstices are totally misaligned.
This mismatch between "max orbital speed" and "seasonal tilt" skews the Sun’s apparent path, dragging the entire teardrop shape westward relative to the local meridian.Orbital mechanics is just high-stakes geometry.
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How much does daylight last as a function of latitude and date? @matplotlib can help you find the answer!
#Astronomy #Earth
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@mcrs987 Now to the ITARior! Well, I meant the interior..
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Remodeled the entire OTP and most of the FTP, also addressing a couple changes around the manifolds of the thrust chamber and hot gas manifold. The exterior model of this should now be effectively complete
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@elonmusk @ZentrynellRealm And many do not realize that 330 bar in the main chamber mean even higher pressure in the Ox Preburner, which is operating with an extremely reactive flow. That's where Raptor really operates at the boundaries of known metallurgy.
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@ZentrynellRealm We’ve gone beyond 350 bar, but not safely yet. With some additional work, we should be able to achieve >350 bar as standard operating pressure.
Anything above 270 bar is a world record.
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Best rocket engine ever:
Full-flow, staged combustion
330 bar main chamber pressure
Highest T/W
Inexpensive to build
Tesla Owners Silicon Valley@teslaownersSV
SpaceX’s Raptor 3 engine is sublime engineering • No basic heat shield needed → saves mass and dramatically boosts reliability • Small fuel leaks aren’t dangerous — they simply burn off safely in the open plasma • Major improvements in payload capacity, efficiency, and overall reliability • Radically simplified design with deeply integrated electronics and fluid systems • So clean and minimalist that even propulsion experts initially thought it looked “unfinished”
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Definitely not related to the dorito spotted over Area 51..👀
Lockheed Martin@LockheedMartin
The D-21 flew in the 1960s — uncrewed, high-speed stealth with Skunk Works® technology. Today, we continue to develop and fly cutting-edge uncrewed systems. Most are classified — maybe we’ll share a few photos in the next 60 years...🦨
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@chrisschmitz What are the chances of kinetic US intervention, in your opinion? I think they want to focus more on cyber/covert ops
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Following up on this:
I suspect if US strikes, it will initially use local TLAM and JASSM to provide RU+CN no pre attack indicators to relay to Iran.
Once the initial strikes have moved, CSG could start moving and more assets moved in openly.
C Schmitz@chrisschmitz
Looking at Tomahawk ranges, one can see that USN can easily affect practically all of "Iran" from the Mediterranean and Gulf of Oman. Aircraft with JASSM-ER would not have to penetrate the Airspace either. The B-1B and SSGN are just a placeholders.
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@andre9lli Of course. I just thought it looked prettier for now lol. Tap goes in the number 5 spot
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@chrisschmitz You called it. News are now reporting disruption of comms at Athens airport.
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We can now see even more clearly, something significantly changed.
We can add:
- Maduro captured
- Terror attack on part of Berlin grid
- Soon to be Persia Riots continue massively, including cyberattack
- possible Cyberattack on Athens FIR
C Schmitz@chrisschmitz
So let’s align the datapoints: - State Department issues Level 4 warning on Russia - Trump mocks Russia, boasts on CIA role at UA strikes - Riots in major Ru ally Iran start - Trump issues military warnings to Iran. Something happened behind the scenes.
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@coastal8049 Thanks! China is indeed trying to learn as much as it can about the earth-moon gravitational environment and how to navigate through it as efficiently as possible. I'm thinking also about Chang'e 5 as well as DRO-A/B/L.
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@andre9lli Yes indeed if it does nothing it returns to the Moon on 2026-01-22 for a more distant flyby. Notice the little kink in the trajectory from the 2026-01-08 lunar encounter. If you trust the model, it will by the end of next year get pretty close to Earth too.
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Chang'e 6 is spending a lot of time in coherent lock with ground station(s). Modelling the presently known orbit it will encounter the Moon again on 2025-01-08 at about 12:00 UTC at a distance ~32000km well within the Lunar hill-sphere. 👀
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