How will SpaceX Accomplish the Orbital Starship Flight and Landing?

SpaceX is about to Launch a Starship on an orbital trajectory around the Earth. What are does this mean regarding power, propellant flow and orbital altitude?

Special credit to @ErcXSpace
Thank you so much!
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/terranspaceacademy
In a recent video we suggested that the next step for SpaceX
should be to launch a Starship prototype to low Earth orbit.
Landing both the booster and the Starship in the ocean
to test reentry and landing systems with minimal risk of harming anyone,
should something go wrong.
Everyone else throws their rockets away.
Its trying to come back and land them
that makes everyone nervous.
We were incredibly happy to hear
that SpaceX is planning exactly this type of mission.
SpaceX will fuel and test a booster and Starship,
As early as July of this year.
To fly most the way around the Earth.
According to the filing with the Federal Communications Commission,
They will launch from Starbase, Texas
And go into low Earth orbit for a 90-minute mission.
Let’s look at what the article tells us
and see what we can calculate about this mission.
First, I’m not sure if they really mean into orbit
or just into space.
The minimum orbital velocity for a stable low Earth orbit is 7.8km/s.
The minimum altitude for low Earth orbit
is anything above 100km altitude.
Though you really need to be above 150km to avoid excessive atmospheric drag.
The maximum altitude,
before you go into middle Earth orbit,
is 2,000 km above the mean radius of the Earth’s surface.
The mean radius of the Earth is 6,378km.
The Starship with a booster is capable of a ballistic flight
to anywhere in the world.
A ballistic flight is not the same as an orbital flight.
A Starship on a ballistic flight would go into space,
But not necessarily go into a stable orbit.
The difference is that to be in a stable orbit,
It is necessary to be above the atmosphere,
With enough horizontal velocity,
to balance the force of gravity
pulling the ship toward the center of the Earth,
with the centrifugal force of the curved path
pulling the ship away from Earth.
In a ballistic trajectory,
this horizontal velocity is not achieved,
and the ship falls back on its own.
In this lesson, we will analyze the mission to see what it will involve.
And become familiar with stable orbits and orbital velocity,
We will also get a rough understanding of circular orbits,
And strengthen our understanding of deltaV,
Learning to differentiate deltaV from orbital velocity.
According to the FCC filing
The booster will fire for 2 minutes and 49 seconds (T+169 seconds),
Release the Starship,
then boost back and return.
Coming back about 8 minutes and 15 seconds after launch,
to touch down in the water off the Gulf of Mexico 20 kilometers from shore.
This is the flight path of the booster filed by SpaceX.
The booster may come down on a drone ship or be recovered from the water.
The Starship will have separated from the booster,
two seconds after booster main engine cutoff.
That would be 2 minutes and 51 seconds into the flight,
Or T+171 seconds.
The booster would still be on its way back at this point.
The Starship will continue around the Earth,
Taking around 90 minutes total,
before re-entering the atmosphere,
Let’s take a look at what this will involve.
The starship system starts with a booster,
The empty or dry mass of the booster is 180 tonnes.
The maximum propellant mass is 3,400 tonnes.
Giving a gross mass for the booster at 3,580 tonnes.
The dry mass of the Starship second stage is 120 tonnes.
The maximum propellant mass of the Starship second stage is 1,200 tonnes.
The Starship can carry 100 tonnes to low Earth orbit.
That makes the maximum gross mass of the Starship second stage as
1,420 tonnes.
If we add these two together we get an initial mass,
of the entire Starship system,
With a payload,
of 5,000 tonnes or 5,000,000 kilograms.

Видео How will SpaceX Accomplish the Orbital Starship Flight and Landing? канала Terran Space Academy