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  • The Apollo Spacecraft was the incredible machine that

  • allowed astronauts to walk on the moon.

  • It was split up into 3 parts

  • the Command Module, the Service Module

  • and the Lunar Module.

  • Later on, we'll talk about what each module does,

  • but first, let's talk about the launch vehicle that gets us into orbit.

  • The Saturn Five rocket.

  • Each mission was launched from

  • Cape Canaveral in Florida.

  • Mission Control was all the way in Houston, Texas.

  • The Saturn Five rocket was 363 feet tall.

  • Just to get a good size comparison,

  • here's the size of a person,

  • and here is the size of a Boeing 747.

  • The Saturn Five was split up into 3 stages;

  • they referred to each stage by a technical name.

  • The first stage was called the S-1C

  • and was powered by five F1 rocket engines.

  • The second stage was called the S2, and was powered

  • by five, slightly smaller, J2 rocket engines.

  • The third stage was called the S-4B and was powered

  • by only one J2 rocket engine.

  • The actual spacecraft, was stored up at the top of the

  • rocket stages.

  • Here is the Lunar Module, which would actually land on

  • the Moon.

  • During the launch, it was protected by four panels,

  • known as the spacecraft Lunar Module adapter.

  • The Service Module contain the engines necessary to

  • enter and leave lunar orbit as well as fuel cells

  • and other electrical components.

  • The Command Module is where the 3 astronauts spent

  • most of their time.

  • At the very top, you'll find the Launch Escape System.

  • In the event of an emergency, it would carry

  • the Command Module safely away from the rocket.

  • The structure you see next to the Saturn Five

  • is called the Launch Umbilical Tower.

  • You'll notice there are 9 service arms that provide

  • access to the Saturn Five.

  • On the day of the launch, the 3 astronauts ride an

  • elevator to the top service arm.

  • The White Room is where they enter the Command Module.

  • Four of the service arms are moved out of the way

  • before the launch.

  • The First Stage ignites 8 seconds before the Saturn Five

  • leaves the ground.

  • As the Saturn Five starts to rise,

  • the remaining 5 service arms quickly rotate to get out of

  • the way.

  • It takes about 12 seconds for the rocket to completely

  • clear the tower.

  • As the Saturn Five picks up speed,

  • the astronauts will feel as much as 4 G's, or 4 times

  • the amount of gravity pressing them into their seats.

  • The First Stage shuts off at 2 minutes 42 seconds

  • at a height of about 42 miles.

  • Explosive bolts detonate releasing the first stage,

  • letting it to fall back down to the Atlantic Ocean;

  • shortly after, the second stage fires up.

  • We're high enough in the atmosphere now, that the

  • Launch Escape System is no longer needed.

  • The second stage shuts off at 9 minutes and 12 seconds

  • at a height of 109 miles.

  • The third stage fires up for a short amount of time

  • to get the astronauts into a Parking Orbit

  • of 118 miles.

  • We'll talk more about the Parking Orbit in the next video.

  • It shuts off at 11 minutes and 39 seconds, but does not detach yet.

  • One of the hardest parts of the mission is over, but the adventure doesn't stop here.

  • Please join me in part two, as we continue our journey towards the Moon.

The Apollo Spacecraft was the incredible machine that


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B1 中級

How the Apollo Spacecraft works: Part 1

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    joey joey に公開 2021 年 04 月 26 日