1
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Exhale.

2
00:00:01,401 --> 00:00:02,268
Three, two, one.

3
00:00:02,268 --> 00:00:05,088
Engage.

4
00:00:07,407 --> 00:00:09,409
We are doing this training
because

5
00:00:09,409 --> 00:00:13,163
the X-59 is going to be flying
probably well above 50,000 feet

6
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and when you start
getting to altitudes

7
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above about 40,000 feet, simply
breathing oxygen,

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100% oxygen, isn't enough
to keep an aviator conscious.

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Above about 40,000 feet,

10
00:00:26,342 --> 00:00:28,645
you actually have to start
delivering pressure

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or pressurizing the lungs
of the aviator in order for them

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to actually be able
to stay conscious.

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The higher you go, the more
pressure you have to provide.

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The emergency
that we're concerned about

15
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would be a loss of cabin
pressure.

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It isn't something
you want to have happen

17
00:00:44,277 --> 00:00:45,779
for the very first time.

18
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If you lose the cabin pressure
of your aircraft at 54,000 feet.

19
00:00:51,084 --> 00:00:55,105
So today was all about learning
how to breathe when a regulator

20
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is delivering pressure,
a lot of pressure,

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60 millimeters of mercury
of pressure, and it's quite a

22
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bit...in 3 -2- 1 pressure.

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Square off that breathing.

24
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A normal breathing
pattern for human's is

25
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active inhalation
and passive exhalation.

26
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So positive pressure,

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breathing, what we're doing
in this training,

28
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reverses that process.

29
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So now
inhalation is a passive process.

30
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If you just relax everything,
it blows you up like a balloon,

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and then you have to actively
exhale,

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squeeze muscles in your chest

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in order to push that air
back out again...

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in 3-2- 1 pressure.

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The training starts off
at low pressure

36
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and then we work our way up.

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So we start off with

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15 millimeters
of mercury of pressure,

39
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and that lets the student
kind of

40
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get a feel for what
it's like to do the

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the breathing technique
that we teach

42
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to make sure that they avoid
hypocapnia or hyperventilation.

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Go ahead and drop your mask.

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Then they go up
to 30 millimeters mercury

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for 30 seconds.

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The most aviators have ever
experienced is about 30.

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However, the system in the X-59

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can deliver as much
as 72 millimeters of mercury.

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Now, for
training, we take them up to 60.

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We give them a quick experience
at 60, about 10 seconds,

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where they can really experience
what it feels like to have

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that kind of pressure
pushed into your lungs.

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Once they've recovered
from that, we'll talk about it

54
00:02:27,897 --> 00:02:29,149
and then we give them another

55
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30 seconds
at 60 millimeters of mercury.

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Ready, ma'am?

57
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I'm ready.

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There's a lot of reasons
to get down

59
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and get down
as quickly as possible.

60
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And this system is designed
exactly to do that.

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It's intended to keep you alive
until you can get below