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newtboy (Member Profile)

Always Look on the Bright Side of Life - North Korean Ed.

noims says...

Very nice, although in my head "Every Sperm Is Sacred" works better with many of those visuals (plus you can always add more rockets).

LIVE: NASA rollout their newest and most powerful rocket SLS

BSR says...

Don't expect much action but you can check on the progress of moving this giant rocket with a giant crawler. Much like how the Space Shuttle was transported to the launch site.

SpaceX takes jab at Russia's 'brooms' comment

BSR says...

SpaceX launched its Falcon 9 with 48 Starlink satellites aboard to low Earth orbit Wednesday. During the countdown, a SpaceX controller during a satellite launch said "Time to let the American broomstick fly and hear the sound of freedom," in a jab at Russia.

The comment was in reference to a recent statement by the head of Roscosmos, Dmitry Rogozin, who claimed that a ban on Russian exports of rocket engines would force the U.S. to rely on "brooms" to get to space.

Starlink is a space-based system that SpaceX has been building for years to bring internet access to underserved areas of the world.

BSR (Member Profile)

Democrat voter has strong message for Biden

newtboy says...

This is not a Democrat any more than Diamond and Silk. This is a paid political actor. Far from the first Fox put on the air pretending to be a Democrat.
Every “complaint” is a dishonest Right wing talking point not based in reality.

Biden allowed trans women in sports!? Exactly how did Biden do that? Precisely when? Exactly what was his personal act that suddenly allowed that when it was disallowed before? Odd, since trans women have publicly participated since 75 and the Olympics allowed them since 2004.
https://en.wikipedia.org/wiki/Transgender_people_in_sports

Afghanistan….as mentioned above, set up by Trump and the Taliban after Trump had thousands of Taliban fighters released from prison that immediately attacked Afghanistan. There was no other way that would go but a faster, more chaotic withdrawal earlier like Trump agreed to (but made no efforts to plan).

Critical Race Theory?! Of course, this Republican shill misrepresents what it is and where it’s taught. He doesn’t like how racial sensitivity divides us, but has no issue with the Republican laws being enacted that outlaw making white people feel uncomfortable. I defy him to define critical race theory and tell me where children are being taught that class. They can’t.
Next he tries the 2020 Trump position, Covid isn’t dangerous, there shouldn’t be ANY pandemic response, and all the dead are now Biden’s fault because he did something to mitigate damages and slow the spread.

Next he claims that Democrats have moved so far LEFT that they aren’t recognizable, but in reality the Democrats have moved far to the right for decades and the right has taken a rocket sled into far far FAR right wing insanity…..so far that they want to befriend communist/socialist Russia to spite the American leftists. WHAT!?

The fact that another paid political actor is willing to act a fool on Fox and lie through his teeth means nothing more than more evidence that they’re blatant liars and their audience are brain dead slugs that couldn’t critically think their way out of a wet paper bag. I’m looking at you, @bobknight33…trying the same old dishonest #walkaway nonsense that failed before. (Because they were all stock photos and paid actors)

Watch the Webb Telescope launch animation

Hipnotic says...

You're absolutely right, my comment should have targeted the live launch, sorry.
Still, that covers about 20 (shaky cam) seconds of the launch before they switch to an animation (!) of the launch.
Which brings me back to my original gripe: The Ariane 5 is an old vehicle which doesn't have onboard cameras. Private rocket launch companies have eclipsed it. And I think The European Space Agency is not keeping up.
As to cameras on the JWST itself, it looks like they didn't attach any for a reason: https://www.space.com/james-webb-space-telescope-no-cameras-reason
Didn't know that...

cloudballoon said:

You get that's just a "preview" right? It's in the desc. It was done & shown before the launch, and I assume you knew the launch date (granted, it was postsponed several times, so admittedly not easy to keep track unless you have a passing interest about it). The actual live broadcast is at: https://youtu.be/7nT7JGZMbtM

Watch the Webb Telescope launch animation

Hipnotic says...

Some (private) rocketeers provide live views of their space endeavors, while other (government) rocketeers give you animations.
The times we live in...

NASA Finally Contacts Voyager 2 Again After A Year of Quiet

Can Spinlaunch throw rockets into space?

maestro156 says...

Yeah, 20000ft is roughly 6km. The air density is about 1/2 but from what I can determine that doesn't equal 1/2 air resistance, but something more like 90-95% air resistance of sea level.

Having said that, I haven't studied aerospace engineering, so I might be getting the details wrong.

There are definitely some minor advantages to building on a mountainside, but I don't think they outweigh logistical difficulties under normal circumstances.

The idea has a good bit of scifi (and probably scientific) history behind it though. I believe Heinlein used a railgun cargo launcher from the moon in Moon is a Harsh Mistress and a mountainside sled rocket in one of his earlier books.

Project Rho is a great resource for hard scifi and rocketry research for writers. http://www.projectrho.com/public_html/rocket/surfaceorbit.php is the link to a page that discusses maglev, railguns and rocketsleds.

newtboy said:

I’m thinking Mt Chimborazo in Ecuador…at over 20000 ft, it’s peak it the farthest from the center of the earth (while not being the highest above sea level thanks to the equatorial bulge).
Sure, it doesn’t remove air resistance or friction, but halving it, even cutting it by 1/3 is a massive leap in efficiency and negates much of the extreme engineering and materials needed to overcome the friction….plus, as you mentioned, there’s the rotational speed advantage from launching on the equator vs Florida.
Also, while extremely minor, there’s also a slight reduction in gravitational pull at those heights. A joule saved is a joule earned!

Buttle (Member Profile)

Buttle (Member Profile)

Can Spinlaunch throw rockets into space?

newtboy says...

To be fair, it’s only meant to throw stuff to the point second stage rockets normally fire. Only 10000g….no problem, right?
Rail guns seem much more reasonable IMO. So does launching from a mountain top to avoid air resistance.

Nasa Astra Test Flight Goes sideways

spawnflagger says...

Love Scott Manley, but not sure why he's started trying to add comedy bits to his videos... stick to the rocket science.

Good explanation though- 1 of 5 engines failed, so instead of thrust:weight ratio being 1.25, it was 1.0. Only when it burned enough fuel did it get light enough to start lifting.
Could've ended much worse.

eric3579 said:

Why

World's First 3D Printed Rocket | Veritasium



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