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10 Jan 2021 17:35:40 UTC
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How to Light and Restart a Rocket Engine
Upon request the Terran Space Academy has created a refresher for those of you wondering how rocket engines ignite and are restarted. We always appreciate feedback and recommendations...thanks Siar5149!
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https://www.youtube.com/watch?v=_idTkeGXtOs
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https://www.youtube.com/watch?v=_idTkeGXtOs
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video/mp4
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STARG
stargrazer-high-speed-interstellar
How can we catch up to and explore an interstellar visitor like Oumuamua?
Or get a warhead out to an advancing asteroid in time to make a difference?
The Terran Space Academy shows how innovative thinkers are planning to surmount these unbelievable challenges and allow many amazing spaceship propulsion systems to reach deep space.
Thank you so much for listening!
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https://www.youtube.com/watch?v=Uak7odKYIRs
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VIDEO
FORCE
forces-and-physics
What physics do I need to know to help me understand spaceflight?
Sometimes after a lesson with a lot of equations,
We like to create one with few numbers,
One you could sit back and just let your brain absorb...
Einstein did not win a Nobel prize,
for one of the greatest accomplishments in human history,
he won a Nobel prize for accurately describing the photoelectric effect,
where photons throw electrons off atoms and create a current.
Einstein’s theories of General and Special Relativity,
describing the effects of extremely large masses and velocities,
along with the theory of Quantum mechanics,
describing the actions of subatomic particles,
are the most proven theories in science.
But even though they accurately predict,
what we see in the universe in almost every case,
they are both incomplete.
Both of these theories fail when extreme mass and gravitational force,
Are compressed to subatomic dimensions,
Like in a blackhole....
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In our lesson describing the launch,
orbit, and landing of the Starship,
I gave a description of an orbit.
I showed a spaceship in a stable orbit,
Being pulled toward the center of a planet by gravity,
But having enough horizontal velocity,
Relative to the planet,
For the centrifugal force pulling the ship away from the planet,
To balance the gravitational force pulling the ship toward the planet.
Thereby allowing the ship to move in a circular path around the planet,
Essentially forever.
Unless another force,
Like atmospheric drag,
Acts on the ship to change its status.
I received feedback from one learned colleague,
That this was a disservice to the class.
As there is no centrifugal force.
And that this is only a fictitious force…
They are wrong.
But they are also right.
Orbital mechanics are complicated,
And physics itself can be mysterious to understand.
There are in fact,
In the entire known universe…
Only four forces proven to exist…
The strong nuclear force,
The weak nuclear force,
Electromagnetism,
And gravity.
Centrifugal force is not included.
Neither is centripetal force.
But what physicists call a force,
And the common meaning in usage,
Are not the same.
If no other forces exist,
Then what kills us in a car crash?
It’s not gravity,
It’s certainly not nuclear…
We didn’t suddenly become magnetized…
To understand these principles,
Let’s go back to those forces,
And then into the laws of motion.
Remember that,
In science,
a theory is above a law.
A law tells you what happens.
A theory tells you why.
Scientists don’t use the word theory to mean a guess or supposition.
That is what they call a hypothesis.
To scie
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https://www.youtube.com/watch?v=wTax0NZdgJQ
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VIDEO
THE N
the-new-rotating-detonation-aerospike
NASA's NEW Rotating Detonation Aerospike Rocket Engine changes everything! (About chemical rocket engine efficiency limitations)
Hello and welcome to the Terran Space Academy! NASA's recent success with its new engine really is big news! No it won't change your bank account or the weather. But it does set a new standard for efficient rocket engine operation, that will create new opportunities for the space industry.
Shop the Academy store at...
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https://www.patreon.com/terranspaceacademy
Get 20% off when you sign up for Brilliant.org
http://brilliant.org/TerranSpaceAcademy/
Drone in D by Kevin MacLeod
is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200044
Artist: http://incompetech.com/
Thank you so much for watching!
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Artists
https://twitter.com/C_Bass3d
https://twitter.com/Neopork85
https://twitter.com/RealEngYT
https://twitter.com/hazegrayart
https://twitter.com/AlexSvanArt
https://twitter.com/_fragomatik_
https://twitter.com/nickhenning3d
https://twitter.com/RGVaerialphotos
Companies
https://twitter.com/NASA
https://twitter.com/SpaceX
https://www.cochranex.com
https://twitter.com/blueorigin
https://twitter.com/Space_Ryde
https://twitter.com/VELO3DMetal
https://twitter.com/VirginGalactic
https://twitter.com/relativityspace
https://twitter.com/NeutronStarSys
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https://www.youtube.com/watch?v=BHRfj-QLS8Q
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VIDEO
CAN S
can-spacex-use-advanced-plasma
The journey to Mars will take a SpaceX Starship up to six months with chemical methylox engines. Radiation exposure on Earth is below 2.5milliseiverts per year. Colonists will suffer levels 300 times higher than that on their way to Mars. Can we apply superconducting advanced plasma propulsion systems to shorten that to only 30 days? Neutron Star Systems has developed an advanced magnetoplasmadynamic thruster system using rare earth barium copper oxide high temperature superconducting electromagnets that greatly increase the performance of plasma propulsion while reducing power consumption. This could be the future of spaceflight propulsion.
Thank you so much for listening!
Links to the Academy store and our Patreon support page are below. Ad Astra Pro Terra Shop the Academy store at...
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https://www.youtube.com/watch?v=moZvxL4mhNk
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VIDEO
THE F
the-future-of-russia-in-space
After a half century of not leaving low Earth orbit
humanity is once again looking to the stars.
The first era of space exploration was fueled
by the rivalry between two competing superpowers
The United States and the Soviet Union.
But the world is a different place now.
As private companies cut through bureaucratic inertia
and do great things in space…
Old enmities rise again.
After almost three decades,
Russia has decided to back away from cooperating with the United States in space…
And is looking to join with the economic superpower that is modern China…
To start building a colony on the Moon…
The importance of this alliance cannot be understated.
What could Russia offer China in this partnership?
And what is the future of Russia in Space?
TSA-SOV-TTM-FRS-21077
Please help support our channel at Patreon.com/TerranSpaceAcademy
Music credits:
William Rosati "Parzival"
Credits
Associate Press NASA SpaceX Potomac Institute for Policy Studies
Gunter’s Space Page False Steps Military Review Astronautix
3D Horse Global Security Exosnews Roscosmos WizScience
Zamanda Yolculuk Ars Technica Dreamstime STEPS SeaLaunch
Spektr Haze Gray Art DTA Red Abandoned Exploring with Dali CGAU
Corrections:
4.1 meters for the Polyus… we forgot to say the decimal.
Ten to eleven time zones for the Soviet Union… not six.
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https://www.youtube.com/watch?v=luzcAt0l7vk
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VIDEO
STARS
starship-artificial-gravity-update
An understanding of artificial gravity systems is critical to survival in space.
This brief update on artificial gravity systems for interplanetary Starships will answer your questions on this subject. While adults can handle zero g with tolerable medical issues there is no way to safely transport young people without a gravity system.
SpaceXVision has created a beautiful design that we analyze in this lesson.
TSA-SOV-SB-SAGU-21111
Music Credit
Kevin MacLeod "Lost Frontier"
Credits
SpaceXVision
SpaceX
Spincalc
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https://www.youtube.com/watch?v=4IEFBxU8L_U
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VIDEO
THE N
the-near-future-of-personal-spacecraft
What could we do with lattice fusion, ion propulsion and force fields?The Terran Space Academy illustrates the importance of thought experiments...As we explore what is technologically probable.Will we ever have a two person spaceship capable of reaching the Moon?And what advances would we need to provide power, propulsion and reentry?Experience space travel as Newton, Einstein and Hawking did...with a little help from CGI and the TSA.Concepts discussed:Space TravelAneutronic FusionPersonal SpacecraftAtmospheric Ion PropulsionMagnetoplasmadynamic PropulsionMagnetoshell Ion Based Force FieldsGravity WellsLunar FlightTrans Lunar InjectionLunar Orbit InsertionLagrange PointsOrbital MechanicsSpacecraft ReentryThank you so much for watching!Ad Astra Pro Terra Shop the Academy store at... https://shop.spreadshirt.com/terran-space-academy Please help support our channel at... https://www.patreon.com/terranspaceacademyhttps://www.esa.int/Enabling_Support/Space_Engineering_Technology/Propulsion_and_Aerothermodynamics/https://meesst.eu/https://www.esa.int/Enabling_Support/Space_Engineering_Technology/World-first_firing_of_air-breathing_electric_thrusterhttps://directory.eoportal.org/web/eoportal/satellite-missions/content/-/article/a-1https://www.neutronstar.systems/https://www.ijscia.com/wp-content/uploads/2021/08/Volume2-Issue4-Jul-Sep-No.131-578-586.pdfCreditJAXA, NASA, ESA, Tesla, CNSAAirstream from the United States of AmericaNeutron Star Systems out of GermanyQuinteScience out of Poland.Sitael out of Italy"Apollo 13"
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https://www.youtube.com/watch?v=VQN-T4RquZw
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VIDEO
TRUMP
trump-was-right-about-this-anyway
President Donald Trump recognized the military threat to America's space assets and took decisive action. The creation of the US Space Force was critical to national security.
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https://www.youtube.com/watch?v=Uhj_8IhHReQ
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VIDEO
OFF-W
off-world-roving
Proven and recently developed ground transportation systems for the Moon and Mars is discussed in detail. To properly explore these worlds it will be necessary to cover a lot of ground. The US and former Soviet Union have built and deployed dependable systems for this purpose and several companies are rushing to fulfill this need in the new space economy.
Several companies have built very dependable rover systems for off-world exploration
and newer companies have Earth vehicles that might be easily modified for off-world use…
Many companies have recognized the potential market for these rovers. Elon Musk has already said that a pressurized version of CyberTruck will be used on Mars and presumably the Moon while Toyota has been designing this Rover. Which the Japanese Space Agency, JAXA, plans to use on the Moon. And then there’s this one by the European Space Agency. All of these vehicles will use the knowledge gained by the Apollo Rovers, Lunokhod and modern systems to develop robust, dependable means of transportation so we can safely explore the Moon and Mars and start building off-world colonies so that our children can have a better future.
Exploring the Solar System will require Rovers and RVs capable of all terrain travel that will not leave you stranded…
An off-world Rover has already been built and tested on the Moon.
The Lunar Roving Vehicle was built by Boeing…back when the engineers were in charge and they were an amazing company…dedicated to humanity’s survival in space. The Lunar Roving Vehicle was a battery powered vehicle used on the last three Apollo missions to the Moon. These rovers had a mass of only 210kg and could carry up to 490kg of explorers, equipment, and samples. It was supposed to have a top speed of 13km/h (8mph) but when you put a test pilot behind the wheel of anything you will quickly find out what its real limits are and on Apollo 17 they were able to get it up to 18km/h (11.2 mph). Thank you, Eugen Cernan, for setting the Lunar Land Speed Record. Which I hope someone listening to this lesson will break someday. This may not sound that fast but when you consider that the average walking speed of a human is at best half that, and you’re burning a lot of oxygen traveling on the Moon. These rovers folded up and were carried in the Quadrant 1 bay of the Lunar Module. During all three missions they traveled an average of 30km and were of course left on the Moon. The first selfie near one of these will probably get you in serious trouble with the NASA historians…
What can we learn from these rovers to apply to the ones we will need on the Moon and Mars in the future? The Moon is easy. You will always know when solar energy will be available on the Moon and will have to plan for darklune ope
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https://www.youtube.com/watch?v=qjf0yfWtwMs
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