Starship Planetfall

How will Starship safely land on the Earth and Mars?
Some claim it is not possible and the ship will burn up on atmospheric entry,
or be unable to slow down enough, and be destroyed on impact.
Understanding the science of entry, descent, and landing, will help us
know why they are wrong, and teach you to pilot your Starship to
a safe landing on other worlds.
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To understand how to safely land your Starship.
there are a few important concepts you must know…
Orbital reentry and interplanetary reentry,
Reentry angle and angle of attack,
Peak heat flux and heat load,
peak deceleration and peak dynamic pressure…
As your Starship comes into the atmosphere…
The broad surface of the underside…
Covered with heat tiles…
Will be pointed toward the airflow at a specific angle…
This angle will be carefully calculated…
As the Starship begins to slow the drag force will produce deceleration of the ship…
The ship and everything in it will feel this deceleration just like a gravity force…
We measure this deceleration by dividing it by 9.81meters per second squared…
And call this unit one g.
The maximum recommended g force allowed for human crew is about 4…
Astronauts can survive up to 8 for a brief time but this can break ribs and blood vessels…
Any exposure at or above 9 g’s for even a few seconds can be fatal…
So, when you become the Captain of your own Starship plan your trajectory carefully…
Make sure that you have calculated the correct aerobraking maneuver to slow down…
Then plot your angle of entry and angle of attack to make sure your ship and crew can tolerate the landing…
The atmosphere of Mars is not the same as Earth…
The Van Karman line on Earth is at about 100km…
The equivalent on Mars is at only 80km…
On Venus…where I hope you never try to land your Starship but might need to aerobrake…
The atmosphere effectively starts at 140km….

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Music credits:

Aakash Gandhi "The Rising"
https://www.youtube.com/channel/UCGH2igDnkXo_J0A7OxMcJJg
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Credits

NASA SpaceX Lab Padre Blue Origin Virgin Galactic CBass 3D Productions Deep Space Courier

Видео Starship Planetfall канала Terran Space Academy