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VMGR > Bleed Air > Flashcards

Bleed Air Flashcards

1
Q

Systems that use Bleed Air

A
  • Eng Start
  • Buddy Start
  • A/C
  • Cabin Press
  • Leading-edge ice protection
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2
Q

Components

A
  • BA\ECS
  • X-Ship Manifold
  • Bleed-Air Ducts
  • Bleed-Air Compensators
  • Bleed-Air Valves
  • Mix-Muff assemblies
  • Px Transducer
  • Temp Sensor
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3
Q

Bleed-Air Aug

  • on _____
  • off _____
A

. On <1,000 hp
. Off >1,100 hp

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4
Q

Bleed-Air Stage

A

10th, augmented by 14th

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5
Q

Nacelle Auto Shutoff

A

. >101.5 psi
. >685° F
. Loss of electric power
. No Bleed-Air

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6
Q

What is lost when a wing is Isolated?

A

Same side leading edge anti-ice

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7
Q

What valves close to isolate a wing?

A

. Augmentor valves
. Nacelle SOVs
. isolation valve

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8
Q

Valves to ISO Left X-Ship

A

. Divider Valve
. LWing ISO Valve
. APU SOV

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9
Q

What is lost with ISO Left X-Ship?

A

Empennage Anti-Ice and De-Ice

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10
Q

Valves to ISO Right X-Ship

A

. Divider Valve
. RWing ISO Valve

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11
Q

What is lost with ISO Right X-Ship?

A

. Underfloor heat
. Cargo Comp A/C

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12
Q

Rate of Pressurization

A

Min: 0”/min
Max: 3,000”/min
Norm: +500”/min and -300”/min

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13
Q

Safety Valve

A

Opens: 14.96Hg or -0.76Hg

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14
Q

L or R X-Ship manifold between _______ and ______ Valves.

A

L or R ISO and Divider

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15
Q

“X-Wind limited” ACAWS

A

. 15 knot limit

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16
Q

ECS Systems

A

. Flight Statiion and Cargo Compartment A/C
. Underfloor Heat System
. Avionics Cooling System

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17
Q

A/C Components

A

. Heat Exchanger
. Turbine and Fan
. Water Seperator

18
Q

Number of Avionics cooling fans

A

4

19
Q

A/C Pack: Flow Control Valves Auto-Shutoff

A
  • Water separator pressure differential of 14psi
  • Flight Station A/C discharge >210° F
  • Cargo Compartment A/C discharge >380° F
  • Any Engine Start sw in Start.
20
Q

A/C Flow Control Valve closed when

A

. Power Switched off
. Px Mode Select in AUX VENT
. Emergency Depressurization in DUMP

21
Q

What temp is maintained for underfloor heat/fan

A

. 73°±8

. Shutoff if 210°

22
Q

Default Spinner De-Ice operation

A

12” on, 78” off

23
Q

De-Ice Sequence

A
  • 6 min cycles alternating every minute
    . Vertical - Horizontal - Vert - Out-board - Vert - In-Board
    . Vert Boot inflates for 6” every 54”
24
Q

Anti-Ice

A
  • Same as De-Ice except Vert Tail is always receiving heat.
25
Q

Wing/Empennage anti-ice only during _______ and ________ phases of flight.

A

Approach, Landing

26
Q

Water Separator Temp and why

A

min 35° IOT prevent ice accumulation on separator bag.

27
Q

What happens at 14 psid of water sep

A

. ACAWS Displayed

. A/C Shutdown

28
Q

Range A/C will hold in Auto

A

60-90°

29
Q

Avionics cooling fans on at ___°

A

41°f

30
Q

When Px in Man, What indication do you look to, to set Cabin Px.

A

Cabin Rate. When at desired alt set 0 on Rate.

31
Q

What should be monitored in High decent rates?

A

Differential Px. Forcing Safety Valve to open can cause damage.

32
Q

Auto Ground mode

A

Outflow and safety valves open.

  • WOW
  • Power Levers < 33.1°
  • Bleed air Pressurized
33
Q

Pressurization

Auto Prep-Press mode

A
  • Px Levers Flt Idle: Cabin alt descends <300’ below fld elevation.
  • If abort: Cabin alt climbs 500fpm for 20”, then 2k fpm until depressurized.
34
Q

Auto Climb mode

A

WoffW or Gear retracted IAS . 100kts, alt schedualed

35
Q

Auto Cruise Mode

A

A/C remains ±200’ for 10min. Cabin alt maintained until >200’ for 10 or >500’.

36
Q

Auto Decent mode

A

Alt dec > 1k. pressure schedule maint until set ref alt reached.

37
Q

Auto Landing mode

A

WOW, or Gear down and <60kts

38
Q

NO Press

A

. Cabin alt is equalized at set rate

. at .5 hg outflow and safety valves open.

39
Q

Aux Vent

A 
. Both A/Cs FCVs closed
. Floor Heat SOVs Closed
. Aux Vent Valves opened
. Outflow opens to dep at 3,000 fpm
. When dif Px
40
Q

Emer Depress sw

A
  • Both A/Cs FCVs closed
  • Floor Heat SOVs Closed
  • Both Outflow and Safety Valves open
  • Depress at an uncontrolled rate
41
Q

Emer Depress Handle

A

Door in aft escape hatch released.

VMGR (10 decks)

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