Kerbal Space Program - Interstellar Quest - Episode 43 - Landing On Duna
After the mysterious accident during the orbit trim maneuver we have no option but to make a swift touchdown on Duna to preserve the integrity of the mission. However, it turns out the updating mods in the middle of a series can lead to plans (and planes) that no longer work as expected.....
In the early days of the US Space program there was a parallel nuclear power program to develop the nuclear power technologies needed for spaceflight. The Space Nuclear Auxiliary Power (SNAP) program worked on both isotope decay generators and fully operational fission reactors. And while several spacecraft have been launched to other planets using radio isotope generators, the US only launched one fully operational test reactor - SNAP 10A which operated according to predictions from ground tests. Until the host spacecraft failed 40 days into the mission.
While the concept was proven, no mission could be matched to the capabilities and no other test reactors have been flown by the USA.
(The Soviet Union on the other hand flew several)
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https://www.youtube.com/watch?v=1oS-BmoSBtQ
Rocket engines make spaceflight possible, but, testing a rocket engine for spaceflight appears to represent an engineering challenge. Engines designed to operate in a vacuum may behave differently from those operating inside an atmosphere, and you might think that no vacuum pump could extract the exhaust gasses fast enough to stop the pressure building up and ruining the test conditions.
However, as it turns out building a test stand which maintains high altitude conditions is easier than you would imagine since the rocket exhaust can be exploited as part of a pumping mechanism to keep the chamber evacuated.
Includes a small section of Cody's Lab showing the problems with igniting a rocket engine in a vacuum chamber.
https://www.youtube.com/watch?v=76JM03a6WH4
Follow me on Twitter for more updates:
https://twitter.com/DJSnM
I have a discord server where I regularly turn up:
https://discord.gg/zStmKbM
If you really like what I do you can support me directly through Patreon
https://www.patreon.com/scottmanley
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https://www.youtube.com/watch?v=hrLyzpTV7GU
Due to scheduling difficulties this is more than a week late, and there's a lot of news to share. With limited bandwidth we only got a few images from the moon so far, and Japan managed to bring its lander back to life after a night on the lunar surface.
India selects their astronauts for their first human space flight.
Varda shares and amazing video of their capsule reentry and SpaceX continue to set new records.
Follow me on Twitter for more updates:
https://twitter.com/DJSnM
I have a discord server where I regularly turn up:
https://discord.gg/zStmKbM
If you really like what I do you can support me directly through Patreon
https://www.patreon.com/scottmanley
...
https://www.youtube.com/watch?v=MZgaLzYFCrU
The new spaceplane arrives at Eve and descends into the atmosphere, hoping to land kerbals on the surface safely, and return them to space. However operating in these high gravity environments leads to a number of problems.
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https://www.youtube.com/watch?v=1MHzpvjgV2Q
Finally my grand plan has reached fruition, the Othari have been genetically modified into a new more amazing form. Except something didn't quite work because they don't have nearly enough hair.
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https://www.youtube.com/watch?v=8w8wobK6M8k
Another installment of 'Things Kerbal Space Program Doesn't Teach' - explaining the expander cycle rocket engines in more detail. Expander cycles use the waste heat from the combustion chamber and nozzles to boil liquid hydrogen and power the turbines. The main advantages are cooler, less chemically active turbine environments, but if used in a closed cycle design the total thrust is limited.
Most of this material is at a pretty high level, I'm not a rocket scientist, I only play one on the internet.
Most of the flow schematics are taken from this excellent article by William Green
https://blogs.nasa.gov/J2X/2014/03/24/inside-the-leo-doghouse-the-art-of-expander-cycle-engines/
I also took some o
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19850010710.pdf
Also, Emre Kelly's story on the Dragon capsule RUD
https://www.floridatoday.com/story/tech/science/space/2019/04/20/smoke-seen-miles-spacex-crew-dragon-suffers-anomaly-cape-canaveral/3531086002/
John Kraus's Delta IV photo is available from his site:
https://www.johnkrausphotos.com/
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https://www.youtube.com/watch?v=HSUhHYdyGJI
Star Wars: Armada Core Set On Amazon: http://amzn.to/2eSpYXY
Star Wars: Armada is a tabetop wargame which models capital ship engagments, you can run small fleets of ships supported by fighter squadrons and spend a couple of hours quoting Star Wars and making 'pew pew' sound effects.
In short, It's hella fun. And the models are great, who doesn't love moving model Star Destroyers into the rebel fleet only to have them rammed by a hammerhead corvette?
Star Wars: Armada Core Set http://amzn.to/2eSpYXY
Imperial Class Star Destroyer http://amzn.to/2wOmID2
Lots Of Expansions: http://amzn.to/2jbTTLW
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https://www.youtube.com/watch?v=5y3-L0vDDws
The Lander has done its job, now the 2 man crew is back in space and we need to rendezvous with the command ship so we can continue exploring this new planetary system.
Kerbal Space Program is an indie game developed by Squad - get it from http://www.kerbalspaceprogram.com
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https://www.youtube.com/watch?v=d15egr3fI0Q
A round up of big space news stories, with Blue Origin flying its first commercial mission while Elon Musk Starship Hopper falls over in high winds. We also got the details on why building the Super Heavy Booster from stainless steel was 'counter intuitive.
Stratolaunch's Roc looks like it's becoming the modern equivalent of the Spruce Goose and Vector Space Systems gears up for a test launch.
Popular Mechanics Interview:
https://www.popularmechanics.com/space/rockets/a25953663/elon-musk-spacex-bfr-stainless-steel/
Pictures of fallen hopper nose:
https://twitter.com/JaneidyEve/status/1088192860405432320
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https://www.youtube.com/watch?v=GfWarGb_hds