New Mars Forums

And why cant paper printers just print em papers by burning the paper slightly.
There, an inkless printer.
How useful is that.

Printers would be a lot more useful if their material would be readily available around the world.

Maybe sand.
If a printer could take 1 gram of sand.
Melt it a tiny bit.
and place it.
in 3d.

repeat... 1000 times and u have some glass sculpture.

and regarding boeing.
i always think of airbus,
when they had made the a380,
and didnt make it easy for airport to edit their ports to accommodate for the a380.
that was a fatal mistake that to me seemed like they didnt quite understand the importance of the feedback loop.

nobody is going to buy a plane that cant land anywhere.
or just, in a few select locations.

and no airport is going to bother spending tons of money being able to adopt an airplane,
that might not have any future anyways.

if they had made it a no brainer for the big airports of the world to acommodate it.
its usefulness would have increased and they would have started seeing more sales.

which would make an argument for even more airports acommodating it.
and the feedback loop starts.

its always always always.
about the feedback loop.

life is nothing but a giant feedback loop.
be it up or down.

Its in the manufacturers short term interest.
for its printer to be printing with material
only they or their partners can make.
and is then sold expensively.

so its in their short term interest.
to kill their own future.

I used to teach at a school.
We bought an expensive 3d printer.
It was nice and all.

But what really bothered me,
was that the printing material was very expensive.

I am absolutely convinced, that the manufacturers,
cannot make a bigger mistake, than to make the printing material expensive.

They should go the opposite route.
Make using their products super easy and effective.
Make using their printer a no-brainer.

Every time people print.
They are advertising the printer.

Whoever is doing the 3d printing,
is getting to know that printer.
Learning how to use it
Getting used to using it.
Getting ideas on how to use it further.

Nobody wants a printer that can barely be used anyways.

The manufacturers were doing the cash-it-in-and-run.. approach.
But they should have been doing the, take-over-the-universe.. approach.

Which is to make their products absolutely awesome.

People will see how the world is, eventually.

And 3d printing really should be done in some specialized offices.
A place with a 3d printer.
And some individual who knows how to operate it.

And people just go on a website,

And send a file and press "print"

And result can be delivered in the mail.

Prefereably via drone.

An office like that could provide the world with 3d printing abilities.

Could eventually offer the world to print in any material etc.
You just draw it in some program.
Select material.
Press print.
Few days later, its in your mailbox.

How is that not a win.

And user could watch on camera as their unit is being printed.

And why dont we have automated drone delivery yet.
Whats taking so long.

But it seems to take forever to take off.
This 3d printing thing.
Like everything.

One-way-ish is the way

I read the case for mars so many times back in the 20th century. One core thing i feel.

We really should find people, which are ok with going one-way-ish to Mars.
Meaning without a current plan to send them back in any near future.

To counteract it, there will be, a plan to colonize the planet.
To make Mars like another Earth.
And precisely because we are making wise decisions like this one, its a plan likely to come to fruition.

It is just so ridiculously counter productive, to spend enormous amount of resources, to... not have our people on Mars anymore.

We´d be spending most of the mission resources on.. not being there.

And going back is super dangerous as well.

And sending them back in the near term does not, boost the security of the colony there.

Its like.. come on.

One way.
And after 20 years, we can start talking about it.

But you´re probably not going to be interested. Things will be happening on Mars like crazy.

If we can find people who will accept that.

Just, we are adding zeros to the effectiveness of the mission.

And if they just want to go back anyways,
why are they even going there to begin with.
Just dont go.

We could pay them handsomely using a fraction of the savings.

How would I go about doing that?

I just wanna share some dreams.
Always dreaming.

The rpi5.
https://thepihut.com/products/raspberry … 2414431617

This cooling can be used only passively as well.
https://thepihut.com/products/argon-thr … berry-pi-5
Better to turn the computer on the side with this for the ventilation is horizontal.
Which fits when i think about it for the rpi is.. horizontal.

And with 2x500gb ssd. Good for backup making.
https://shop.pimoroni.com/products/nvme … 4434961491

Then by catting all the files into one big file, and then obfuscating it using this library i found.
Can all be done by just running a bash function.
Makes the response time of the website, super fast.
Plus low load on the server, for that same reason.

Then there is some possibility of Poe, power over ethernet.
Then the lan cable would be power as well.
Meaning, super clean setup.
Only one cable, lan cable.
Except for the one from the backup battery.
And thats just a cable for one of the rpi's for its just an information cable.
But there are some complexities involved with poe and im not sure if its worth it.

Then theres more but enough about that for now.

Yeah let me know if I can help.

htaccess sounds like apache.
i abandoned apache a long time ago for nginx.
and did not regret that.

nginx has much more understandable configuration setup system.
and also, every request is served by creating only a thread, not an entire process like apache does.

So nginx is much better at dealing with sudden traffic peaks.

so.. no, havent dealt with htaccess apache configuration files for 15 years.
am still having nightmares about it.
almost.

It just dawned on me that SSTO is basically the step after full reusability.
Which starship is reaching.

So its:
1. No reusability, just getting into orbit and throw away the rocket.
2. Dual system, reuse lower part. (Falcon 9)
3. Dual system, reuse both parts. (Starship)
4. Reusable SSTO.

And each of those, has a minimum system.
And by minimum system i mean a rocket that can send, 1kg into orbit.
That rocket gets bigger the further we move along those 4 numbers.

But efficency, takin everything into account,
tends to grow faster with rocket size the higher the number is.

A gigantic reusable SSTO.
There.
And all humanity and everything is in space.

Just becomes an elevator into the new world.

Might as well reset the calendar its such a big event.

I would always think that, the most sensible way to make each system,
would be to first make the minimum system.
Have that blow up left and right and learn learn learn.
And only then, start to increase the height then... increase the width.
And thats an event.

So we basically have a ladder up this stairway.

Stairway to heaven.

It would actually be nice to see the smallest possible version of each of those systems.
Then have some slider,
and able to drag it around and it displays, the expected efficiency of each rocket.
In dollars per kg to LEO.
Or just a graph.
With one line for each type.
Would be a very interesting graph.
And we could plot the falcon 9, starship and some ordinary rockets on it.

Chatgpt to the rescue. Here it is:
https://postimg.cc/DmLXd0s0
https://chatgpt.com/share/68b17fbe-4dc8 … 04ad435527

Ignore the beginning of the lines.
I chose too low of a beginning, 1kg into orbit. Should have been 1ton into orbit.
But i kinda dont get it.
Minimum should be... nothing. just get into orbit.

Im a bit confused with each categories line being lower than the one above, at all launch masses.
Would have thought the ssto would end up the lowest but not at the lower launch masses,
and such for each consecutive category.

Does that mean we should have just gone straight for an SSTO?

Chatgpt was saying the SSTO has razor thin delivery margins.
But shouldn't that be a function of size.
The bigger the craft the better the margins.
Because of the, circumference grows to the second power while mass grows to the third, effect.

thanks i posted on one of his subjects.

I downloaded the program and ran it.

You can add

###
from modules.planet import Planet
earth = Planet('Earth');

earth.g_constant = 6.67430e-11
earth.mass = 5.972e24
earth.radius = 6.371e6
earth.sea_level_density = 1.225
# Gravitational constant (N * m^2 / kg^2)
# Default units are kg and meters.
###

right beneath the first 3 import lines.
But u need to make a folder called modules.
and in that folder, place file planet.py and put in that file:

class Planet:
    def __init__(self, name):
        self.name = name

    def set_mass(self,new_mass):
        self.mass = new_mass

ur project reminds me of this nasa program they were
working on in the 90s.
it was super cool.
he heated the air above this tiny metal. and that created this upwards
momentum, which propelled the thing upwards.
and he could shoot the laster from elsewhere even.
off course, the thing that killed it, is that it doesnt work outside
the atmosphere.
still cool though, and interesting.
https://www.youtube.com/watch?v=LAdj6vpYppA

when an object is in the air,
the molecules are hitting it from all sides.

if the molecules above it, increase in temperature for instance.
two things will start to happen.
the molecules will be traveling faster, thus, hitting the object faster.
which is bad for they will tend to be on the way downwards.. pushing it down.

but also, the density of the air/molecules. should decrease.
meaning fewer molecules start hitting it downwards.
which is good.

i have no idea nor ability to evaluate the magnitude of each effect.

if we could magically just, decrease the density above an object.
shouldnt that lead to an upwards force on it.
i would think so.

because i would think the decrease in density effect would overshadow
the increase in speed effect.

i would think if a tunnel of vacuum, would, magically form over an object.
it would just, shoot right up.

cant we somehow use those lasers,
to change that density somehow.
to lead to motion.

in any direction.

speaking about lasers,
they seem to have been advancing in leaps and bounds lately.
https://www.youtube.com/watch?v=UBVlL0FNbSE

and apparently we can also create motion with sound.
https://www.youtube.com/watch?v=uENITui5_jU
https://www.bbc.com/news/science-environment-34647921

its like a riddle.

a riddle i think i will never solve.
but maybe somebody somewhere, will.

Looks like some functions should be smaller.
And also, some lines could be put into a function.

Have u guys looked into object oriented programming.
For those are very object-y things we are dealing with.

We make class projectile,
then an instance of that class and then thats a projectile.
Something like that.

When we are having as many arguments as simulate_air_harvesting_launch has.
Makes me wonder.

We already think in objects.
And everything about a projectile for instance, should just be locked to that specific projectile.
Then we can just send that instance as an argument to the function.
One arg which can contain any number of member variables.

I think for instance, we should have class planet in that code.
And then make an instance of it, earth.

Then
M_EARTH = 5.972e24  # Mass of Earth (kg)
could become
earth.mass = 5.972e24

We could make it with something like this.

# Here we decide, what we do when we create new planets. Its called a constructor.
# In the constructor, self is a reference to the object being created each time.
class planet():
    # Here we make a member function.
    # Thats a function all the instances of a planet, have access to.
    # When this function is being called, self always means, whatever object is calling each time.
    def add_mass(self,new_mass):
        self.mass=new_mass;
   
#Lets make two planets.
earth = planet();
mars = planet();

#Lets give them both some mass.
earth.set_mass(300);
mars.set_mass(500);

And now..
M_EARTH = 5.972e24  # Mass of Earth (kg)
could become something like:
earth.set_mass(5.972e24)

And after that we can just talk about earth.mass.

The bigger the code the bigger the benefit of thinking like this.
We could have hundreds of variables and functions belonging to class planet.

We already think about planets this way in the real world.
And most objects for that matter.

We are not just reusing code we are also reusing our own thinking process.

And if we make another system in the future we can just reuse class planet.
Class planet is not really this computer program as such.
Its just a concept.