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F-35C Enlisted Aviation Warfare Specialist (EAWS) > Phase III, Block II - Low Observable Coating > Flashcards

Phase III, Block II - Low Observable Coating Flashcards

1
Q

What is LO?

A

Low Observable

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2
Q

What does Low Observable (LO) technology provide?

A

Gives aircraft ability to reduce radar, thermal, acoustical, and visual detection.

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3
Q

Why is Low Observable (LO) considered a critical combat system for the F-35?

A

Because operational tactics are developed based on expected levels of LO capability.

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4
Q

What systems and programs are used to support the health, repair, and damage reporting of the LO weapon system?

A
  • ALIS
  • LOHAS
  • LODEM
  • LO3M
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5
Q

What is ALIS?

A

Autonomic Logistics Information System

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6
Q

What does ALIS provide?

A
  • Central nervous system of F-35 air system support functions
  • Hosts Low Observable Health Assessment System (LOHAS)
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7
Q

What is LOHAS?

A

Low Observable Health Assessment System

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8
Q

What does LOHAS provide?

A

Assessment tool to determine air vehicle signature health and prioritize maintenance.

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9
Q

In regards to LOHAS, what data elements are used for the signature health assessment?

A
  • Damage location parameters
  • Damage characteristics
  • Related repair history
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10
Q

What is FMC?

A

Full Mission Capable

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11
Q

What is NMC?

A

Non-Mission Capable

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12
Q

How does LOHAS determine if an aircraft is FMC or NMC?

A

LOHAS compares current defect impact status of aircraft to LO system FMC requirements.

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13
Q

If LOHAS determines an aircraft is NMC, what else will it provide?

A

Also identify defects that need repairing to bring LO system back to FMC.

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14
Q

What does LODEM stand for?

A

Low Observable Defect Entry Module (LODEM)

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15
Q

What information is collected by LODEM?

A
  • LO visual inspection surface defect data
  • Maintainer log information
  • Aircraft tail number
  • Defect description
  • Location and orientation
  • Repair information
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16
Q

How is data for LODEM entered?

A

Entered by maintainers using portable maintenance aid (PMA).

17
Q

What does LO3M stand for?

A

Low Observable Maintenance Management Module

18
Q

What is LO3M?

A
  • Software module within LOHAS that supports flight operations by displaying aircraft LO health/status
  • Recommends LO maintenance tasks to be performed based on aircraft signature status and mission requirements
19
Q

How does LODEM tie in with LO3M?

A

LO3M analyzes defects recorded against aircraft, using LODEM, to determine maintenance actions required to restore aircraft LO system to desired level.

20
Q

What are the requirements for performing LO maintenance outside the standard day environment, and within the operational maintenance environment?

A

Portable enclosures with environmental controls.

21
Q

LO material application procedures and cure times are influenced by what?

A

Environmental conditions

22
Q

List corrective measures that can be used when performing LO maintenance outside the standard day environment.

A

Heater, air conditioner, erecting a Maintainer Fabricated Enclosure (MFE), using localized enclosure and climate controller.

23
Q

What are different types of Standard Repairs.

A
  • Outer Mold Line (OML) Surface Ply (OSP)
  • Filled Elastomeric Coating (FEC)
  • Molded Seals (MS)
  • Form-in-Place (FIP) Seals
  • Elastomeric Tape System (Types II and III)
  • Frequent Access Panel Treated Fasteners
  • Fastener Head Treatment (Hot Melt)
  • Permanent Gaps
24
Q

How is the OSP design used?

A

Integrates thin layer of material into laminate, and across aircraft OML surface to provide required LO performance.

25
Q

How is FEC used?

A

Applied to aircraft and absorbs radar energy striking or traveling along aircraft surface.

26
Q

FEC cannot be used on what areas of the aircraft?

A

Inlet duct, canopy, hot sections of airframe, and exhaust components.

27
Q

How is MS used?

A

Bonded to perimeter of frequently accessed panels and actuated doors to provide access without LO restoration.

28
Q

How are FIP seals used?

A

Used on access panels and doors requiring frequent access and no LO restoration.

29
Q

How are Elastomeric Tape System used?

A

Used on infrequently accessed panels.

30
Q

What is Elastomeric Tape System (Type II) used on?

A

Applied in factory and over-coated with FEC.

31
Q

When would you use an Elastomeric Type System (Type III)?

A

When repair in field on Type II system is required.

32
Q

What are filled elastomer treated fasteners used for?

A

Provide quick access and eliminate LO coating restoration requirements for frequently accessed panels.

33
Q

About how many hot melt fasteners are there throughout the structure of an F-35C?

A

40,000

34
Q

Where are permanent fasteners found?

A

On the OML.

35
Q

How is gap filler material used?

A

Used to fill permanent gaps between skin panels.

36
Q

What is the recommended periodic or on-demand requirements to perform large area or whole aircraft signature performance measurements?

A

None

37
Q

What is the Repair Verification Radar (RVR) used for?

A

Considered support equipment, and used to measure signature performance of repairs more extensive in dimension, or more complex than standard repairs.

38
Q

Is the RVR capable of measuring the performance of standard repairs?

A

Yes

F-35C Enlisted Aviation Warfare Specialist (EAWS) (26 decks)

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