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B-Rad's Study Decks > APART Study Guid > Flashcards

APART Study Guid Flashcards

1
Q

Utility Hydraulics control what systems or components?

A

(FACT WAR SE)
Flight control servos (utility side)
Accumulator Carrier drive
Tail wheel unlock actuator
Weapon pylons (pylon actuators)
AWS
Rotor Break
Start Motor for APU
Emergency Hydraulics

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2
Q

Accumulator (part of the utility hyd system) controls what components?

A

(EAR)
Emergency Hydraulics
APU Start Motor
Rotor Break

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3
Q

What happens in a Utility Hydraulics Low Level condition? What components will be lost?

A

Auxiliary Isolation Valve- (Mechanical) Cuts off all hydraulics forward of the utility reservoir (AWS, Carrier, and Weapons Pylons)

Low Level Switch- (Electrical) Cuts off all hydraulics aft of the utility reservoir (Utility side of the T/R Servo, Tail wheel unlock actuator) (TTWAC) Tail Rotor servo actuator Tail wheel unlock actuator Wing Stores (pylon actuators) AWS Carrier Drive

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4
Q

What components utilities IPAS Air?

A

(FEED NAAIL UH)
Fuel Boost and Transfer (19 +/- 3) Low
External Fuel Tanks
ECS
Defog Blower
Nitrogen Inerting Unit
Air Turbine Starter
Ice Detector Louvers (eng firewall/cooling)
Utility Receptacle Hydraulics (31 +/- 3) High

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5
Q

How does the Engine Anti-Ice/Start Bleed Valve operate?

A

It allows Anti-icing airflow to the engine and bleeds excessive compressor discharge pressure during engine start and Low Speed Acceleration mode (preventing compressor stalls).

a. It is controlled by the HMU during starts
b. It opens/closes at different Ng based on ambient air temperature
c. It is selected by the INLET button on the A/C UTIL page
d. It is fail-safe to the open position (in the event of complete electrical failure)

• Electrical Failure (Anti-Ice fails to the open position and is coupled with a 15-35% loss of TQ)

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6
Q

When does NP overspeed protection occur and how?

A

(Blues Cables)
If the NP meets or exceeds 118.1 ±1%.

An NP overspeed condition is sensed, by the torque and over-speed sensors located in the exhaust frame and a signal from the EDECU closes a solenoid in the ODV, thus routing fuel back into the CHMU. Fuel flow to the fuel manifold ceases, the engine flames out and attempts to restart.

The aircraft responds to an EDECU re-ignition request by commanding ignition on when the EDECU detects a flameout condition. The MP, when requested by the EDECU,commands the ignition on until the EDECU no longer requests ignition or until NG drops below 65% or the throttle is moved to the off position.

During the auto re-ignition cycle one of the following advisories will be displayed on the EUFD: ENGINE 1/2 AUTO IGN.

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7
Q

When does NG overspeed protection occur and how?

A

(Green Cable)

The CHMU will provide NG overspeed protection in the event the gas generator exceeds 108-112% (110 +/- 2).

When an NG overspeed is sensed, fuel flow to the combustor is stopped within the CHMU which causes the engine to shut down.

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8
Q

What occurs when you press the Illuminated FIRE Button?

A

(AFBLVW) (Air Force Boys Love Voluptuous Women)

  • Arms the extinguishing system
  • Fuel to the indicated engine/APU Shuts Off
  • Bleed air to the indicated engine/APU Shuts Off
  • Louvers (fire) to indicated engine are closed
  • Voice warning message (Audio) stops
  • WARN (MASTR) light extinguishes
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9
Q

What class of Acft is the AH64E? And what are the weight requirements?

A
  • Class 2 Acft -Weighed every 24 months (Class 2)
  • 365-4 reviewed every 12 months
  • 365-4 checked for accuracy every 90 days
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10
Q

All ACFT will be weighed regardless of class if…

A

(1) Overhaul or major airframe repairs are accomplished.
(2) Modifications of 1% or greater of the aircraft’s basic weight are applied.
(3) Any modifications or component replacements (including painting) have been made for which the weight and center-of-gravity cannot be accurately computed.
(4) Weight and center-of-gravity data records are suspected to be in error.

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11
Q

Engine Out will be announced under what two conditions?

A

1) NG < 63.0% (throttle not in OFF)
2) Both power levers fly, < 24% TQ applied, NP < 93%

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12
Q

4 ways to Verify PERF Page

A

PPC ENG(S)

ETF

BASIC WT

HVR CHECK

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13
Q

DE Contingency Power is activated when?

A

-Dual engine contingency power is activated when NP is ≤97%

OR

-NP is decelerating at 5% per sec or greater.

If either of these conditions are met, the EDECU increases the normal dual engine TGT limiter setting of 879° to 903° C.

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14
Q

DE Contingency Power is deactivated when?

A

When NP recovers to ≥99.5% and TGT is less than 879°C, the TGT limiter resets to it’s normal setting in approximately one second. No pilot action is required.

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15
Q

When will “ROTOR RPM LOW” or “ROTOR RPM HIGH” be annunciated.

A

Warning Messages!

  • Low Rotor RPM “ROTOR RPM LOW”: NR < 93% and the aircraft is in the air.
  • High Rotor RPM “ROTOR RPM HIGH”: NR ≥ 105%.
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16
Q

Emergency equipment on the helicopter consists of:

A
  • Canopy Jettison System
  • Stores Jettison System
  • Portable fire extinguisher
  • ENG and APU Fire Detection / Extinguishing System
  • Aft Deck, Pass-Thru Bay & Tailboom Fire Detect Sys
  • Two first aid kits
  • Sensitive data Master Zeroize Switch
  • Survivability Equipment - CBR Blower
  • Emergency Locator Transmitter
  • Underwater Acoustic Beacon
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17
Q

The ECU monitors the APU for the following?

A
  • Over temperature
  • Overspeed
  • Over current
  • Low oil pressure
  • Loss of thermocouple
  • Percent RPM
  • Exhaust gas temperature
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18
Q

The APU ECU transmits a shutdown signal to the APU whenever?

A

1)The APU push button is set to off.

2)The ECU transmits the shutdown signal automatically for fault detection of any of the monitored functions.
• Over temperature
• Low oil pressure
• Overspeed
• Loss of thermocouple
• Over current
• Percent RPM
• Exhaust gas temperature

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19
Q

The PTO clutch actuation is also controlled by the APU ECU. Normally, PTO clutch engagement occurs at what % APU Speed?

A
  • 60% APU speed if the main transmission temperature is above 0° F
  • If the main transmission temperature is below 0°F, it will engage at 95% APU speed.
20
Q

What does the APU PTO clutch provide?

A

Provides the coupling and de-coupling between the APU and the main transmission accessory Gearbox, through the number 7 drive shaft.

21
Q

VSI Low “Bug” Window “Altitude Low” will be announced in what conditions?

A

0-9ft – Announced at the current height

10-999ft – Announced 10% below current height

1000-1428ft – Announced 100ft below the current height

22
Q

What are the functions of the EDECU?

A
  • Fully powered by alternator or airframe power
  • 115 Vac 400 Hz
  • Maximum Torque Rate Attenuator (MTRA) function
  • Hot Start Prevention (HSP)
  • Torque Spike Suppression (starts and shutdown)
  • Signal Validation/Fault Codes
  • ENG TGT Limiter Function
  • SIM Performance Training Mode
23
Q

When performance planning indicates that OGE power is not available what task or task element will not be attempted?

A
  • VMC T/O ALT/Airspeed
  • VMC Approach to OGE hover
  • Respond to ENG Failure OGE
  • ITO
  • NOE
  • Masking/Unmasking
24
Q

A/C Currency

A

• If 60 days have elapsed since the last flight as pilot or pilot-in-command in the aircraft mission, type, design, and series (or series, group, per the applicable ATM) to be flown, the aviator will be administered a proficiency flight evaluation in the aircraft per the ATM.

25
Q

NVG and NVS currency?

A

NVG CURRENCY Once every 60 consecutive days, in a one-hour flight in their primary aircraft while wearing NVG. NVG currency may be completed in similar aircraft. Rated aviators will occupy a crew station with access to the flight controls.

NVS CURRENCY Every 60 consecutive days an aviator must take part in a one-hour flight at night in the aircraft, during the day with blackout curtains, or a one-hour flight in the AH-64D/E Longbow crew trainer (LCT) while using the NVS. An aviator must participate in a one-hour flight in the aircraft at night while using NVS or during the day with blackout curtains, at a minimum, once every 120 consecutive days.

26
Q

Semi-Annual Flying Hour Requirements.

A
  • FAC 1 – 70 hours, 15 hours in each crew station
  • FAC 2 – 50 hours, 7.5 hours in each crew station
  • FAC 3 – No duties authorized
27
Q

Simulator Semi-Annual Requirements.

A
  • FAC 1 – 15 hours, 4.5 in each crew station
  • FAC 2 – 9 hours, 3 in each crew station
  • FAC 3 – 24 hours which may be flown in either crew station
28
Q

The PNVS Field Of Regaurd represents the following: PNVS SLEW RATE PNVS Magnification of image

A
  • Top +20°
  • Horizontal and vertical tic marks 0°
  • Bottom -45°
  • Left and right sides 90° from center
  • Slew Rate: 120° per second
  • 1.1 to 1
29
Q

The TADS FOR represents the following: TADS SLEW RATE TADS Magnification of image

A
  • Top +30°
  • Horizontal and vertical tic marks 0°
  • Bottom -60°
  • Left and right sides 120° from center
  • Left and right tic marks 90° from center
  • Slew Rate: 60° per second
  • 1.2 to 1
30
Q

Variables that affect FLIR (Thermal Imaging)

A

(FL-IR O-HAM)

FLIR Sensor Optimized
IR Crossover
Obscurations such as dust, smoke or haze
Humidity
Aviator’s proficiency
MRT (minimum resolvable temperature)

31
Q

Four considerations for FLIR operations:

A
  1. FLIR must be cooled
  2. Scene rich in detail
  3. Sensor polarity (select white hot/black hot)
  4. Only one control should be adjusted at a time
32
Q

IR Characteristics

A

(RATE)

Reflectance – How much IR energy an object reflects of its’ surface

Absorbance – How much IR energy an object is able to absorb

Transmittance – How much IR energy transfers to its surrounding environment

Emissivity - How much IR energy an object emits

33
Q

Identify image intensifying and thermal imaging systems characteristics (FLIR DEGRADATIONS)

A

​– Frozen Video
– Degraded Video
– Loss of BUS Communication
– Dead Channel
– Flashing Channels
– Cloud Shifting
– DRC Effect
– Halo Effect
– NOE Coupling

34
Q

What is the FLIR Scene Assisted Non-uniformity Correction (SANUC) used for? What are the types of SANUCs and how long do they take?

A

Process is performed to optimize the FLIR image quality for PNVS and TADS.

Full: Takes 14-30 seconds to accomplish; Auto if on ground.

One Touch: 1-2 second, followed by a 5 minute adjustment period; Auto if in flight.

35
Q

Types of vision

A

Photopic- Day

Mesopic- Dawn/Dusk

Scotopic- Night

36
Q

Explain the day blind spot

A

Since humans have two eyes, they view all images with binocular vision. Therefore each eye compensates for the day blind spot. The day blind spot covers an area of 5.5 to 7.5 degrees and is located about 15 degrees from the fovea, originating where the optic nerve attaches to the retina.

37
Q

Explain the night blind spot.

A

The night blind spot occurs when the fovea (all cones no rods) becomes inactive in low light conditions and involves an area from 5 to 10 degrees wide in the center of the visual field.

38
Q

The average time required to gain the greatest sensitivity or adaptation to a dark environment is?

A

30 to 45 minutes

39
Q

Types of Hypoxia

A

Hypoxic – Lack of air density (oxygen is more spread out)

Hypemic – Reduction in oxygen carrying ability in the person

Histotoxic – Toxin/poison prevents the body from carrying the optimum amount of oxygen (smoking, alcohol ect)

Stagnant – Blood pooling prevents oxygen from being circulated in the body

40
Q

Factors that affect vision

A

Myopia – Nearsightedness (Image focal point is in front of the retinal)

Hyperopia – Farsightedness (Image focal point is behind the retinal)

Presbyopia – Hardening of the eye lens due to age

Stigmatism – Inability to focus different meridians simultaneously. It results from an unequal curvature of the cornea or eye lens that causes a ray of light to spread over a diffused area on the retina.

Night Myopia –Blue wavelengths of light prevail in the visible portion of the spectrum at night. Nearsighted or myopic individuals viewing blue-green light at night might experience blurred vision.

Retinal Rivalry- When the eyes attempt to simultaneously perceive two dissimilar objects independently.

41
Q

Stages of Hypoxia

A

Indifferent: (98%–90% O2 Sat) 0–10,000’: Decreased night vision

Compensatory: (89%–80% O2 Sat) 10–15,000’: Drowsiness; poor judgment; impaired coordination and efficiency

Disturbance: (79%–70% O2 Sat) 15–20,000’: Impaired flight control, handwriting, speech, vision, intellectual function, and judgment; decreased coordination, memory, and sensation to pain

Critical: (69%–60% O2 Sat) 20–25,000’: Circulatory and central nervous system failure; convulsions; cardiovascular collapse; death

42
Q

Define stress and stressor.

A

Stress: the nonspecific response of the body to any demand.

Stressor: is any stimulus or event that requires an individual to adjust or adapt in some way—

emotionally, physiologically, or behaviorally.

43
Q

What are the different types of stressors?

A
  • Psychosocial: life events (Job stress, illness, family issues)
  • Environmental: (Altitude, Speed, Hot and Cold Environments)
  • Physiological (self-imposed): DEATH (drugs, exhaustion, alcohol, tobacco, hypoglycemia)
  • Cognitive (mental): (Musts and Should’s, Responsibility of Choices)
44
Q

Define Fatigue

A

Fatigue is the state of feeling tired, weary, or sleepy that results from prolonged mental or physical work, extended periods of anxiety, exposure to harsh environments, or loss of sleep.

Boring or monotonous tasks can increase fatigue.

45
Q

Types of Fatigue and their characteristics.

A

Acute: Inattention, Distractibility, Irritability

Chronic: Insomnia, Depressed mood, Weight loss, Poor judgment, Loss of appetite, Slowed reaction time

Motivational Exhaustion (burnout): eventually “shut down” cease functioning occupationally and socially.

B-Rad's Study Decks (3 decks)

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