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Airframes > Test 3: Oxygen Review > Flashcards

Test 3: Oxygen Review Flashcards

1
Q

Why do we want to fly higher in the atmosphere?

A

Air is less dense which results in:

  • Less fuel burnt
  • Decreased drag
  • Turbulence and Weather avoided
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2
Q

The lack of OXYGEN going into the BRAIN when we go to higher ALTITUDES is called what?

A

HYPOXIA

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3
Q

What are the ways of supplying more oxygen to crew and passengers on large aircrafts?

A

Cabin altitude is kept at 8000ft regardless of cabin alt
increase O2 level in air mixture
supplemental O2
bottled O2

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4
Q

What are the ways of supplying O2 in small to medium aircrafts designed with no pressurization?

A

SUPPLEMENTAL O2

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5
Q

How do we store GASEOUS oxygen?

A

GREEN

High Pressure cylinders made of heavy STEEL tanks rated for 1800-1850psi

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6
Q

Newer oxygen cylinders are made up of what?

A

Lightweight ALUMINUM shell WRAPPED in KEVLAR

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7
Q

What should be clearly marked on any of the cylinders?

A

AVIATORS BREATHING OXYGEN

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8
Q

When is an oxygen cylinder considered empty?

A

below 50psi

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9
Q

What is hydrostatic testing?

A

??

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10
Q

Oxygen system used in aircraft depends on what?

A

Type and Operation requirements

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11
Q

Explain the simplest form of a CONTINUOUS FLOW SYSTEM

A

a PRESET flow of O2 exits tank through VALVE passes REGULATOR(reduces pressure) fed into a tank till valve is CLOSED

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12
Q

In a continuous flow system, how is the flow controlled for higher altitudes?

A

ADJUSTABLE REGULATOR provides variable O2 flow to match the altitude

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13
Q

What is a downside to the CONTINUOUS FLOW SYSTEM?

A

WASTEFUL when exhaling

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14
Q

This tool allows efficiency by capturing exhaled O2 in a bag while still allowing air to escape through vents

A

RE-BREATHER MASK

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15
Q

What is a lanyard and what does it do?

A

A chord that wraps around your head

when pulled ignites the O2 candle and starts O2 flow

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16
Q

What type of O2 system do we use on high performance and transport category systems?

A

DEMAND FLOW type

17
Q

In short what is a demand flow type O2 system?

A

Only delivers O2 when inhaled/demanded

18
Q

Describe the DEMAND FLOW TYPE?

A

O2 exits tank, through VALVE passes REGULATOR/REDUCER then through PRESSURE REGULATOR near mask to adjust pressure/flow to user

19
Q

This component lowers the O2 to 60-85psi

A

PRESSURE REGULATOR

20
Q

What type of mask do we use in a DEMAND FLOW TYPE system?

A

CLOSE FITTING DEMAND

21
Q

What are the 2 types of REGULATORS?

A

DILUTED DEMAND

PRESSURE DEMAND

22
Q

This type of regulator HOLDS BACK the flow until user inhales and DILUTES the pure O2 with cabin air

A

DILUTER DEMAND

23
Q

How does the PRESSURE DEMAND type regulator work?

A

O2 delivered through individual pressure regulator under HIGH PRESSURE then FORCED into users lungs

24
Q

What is a flow indicator?

A

a lightweight object/apparatus moved by the flow of O2

verifies it is working

25
Q

Permanent HIGH pressure lines are made of what?

A

STAINLESS STEEL above 450psi

26
Q

ALUMINUM plumbing is used for what?

A

LOW PRESSURE below 450psi

27
Q

How do we know were dealing with O2 plumbing?

A

GREEN TAPE
BREATHING OXYGEN
black RECTANGLE

28
Q

Which valve is designed to open slowly?

A

SHUT OFF valves

29
Q

What are safety precautions when dealing with O2?

A 
Outside
Fire Extinguisher
Cordon area
No flames/smoking
CLEAN everything 
cap/plug all lines and plumbing
30
Q

What is SOLID OXYGEN?

A

Sodium Chlorate wrapped inside insulated stainless steel housing
BACKUP

31
Q

What is good about SOLID OXYGEN?

A

Lasts up to 20min

Less weight

32
Q

What is bad about SOLID OXYGEN?

A

One time use
When lit cannot be extinguished
Extreme caution needed

33
Q

How do we store lquid oxygen?

A

DEWAR BOTTLE

34
Q

What is the benefit of LIQUID O2?

A

1L = 840L

Airframes (19 decks)

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