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AC FUELS > FINALS1 > Flashcards

FINALS1 Flashcards

1
Q

Major supplier of aviation grease

A

Shell / Shell Company

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2
Q

Different soap based greases

A

Aluminum
Calcium
Sodium
Lithium Soap

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3
Q

Non-soap based greases

A

Silica Gel
Clay
Substituted Urea

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4
Q

Two types of Thickener

A

Microgel
Lithium Complex

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5
Q

It rely on an inorganic grease thickening agent, based on HECTORITE CLAY.

A

Microgel Grease

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6
Q

They have a semi-liquid to solid consistency, reduce friction, and stay where ther are put.

A

Greases

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7
Q

Grease consist of what?

A

Base oil
Thickener
Additives

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8
Q

Percentage of Base oil? Thickener? Additive?

A

80% - 90%
10% - 15%
5% - 10%

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9
Q

Types of grease

A
  1. Aeroshell 5 whell bearing and engine accessory grease (MIL–G–3545C)
  2. Aeroshell 6 purpose airframe grease (MIL–G–24139A)
  3. Aeroshell 7 advanced multipurpose airframe (MIL–PRF–23827C)
  4. Aeroshell 14 leading multipurpose helicopter grease (MIL–G–25537C)
  5. Aeroshell 15 extreme temperature range grease (MIL–G–25013E)
  6. Aeroshell 22 versatile multipurpose grease (MIL–PRF–81322G)
  7. Aeroshell universal airframe grease (MIL–PRF–23827C / BMS 3–33)
  8. Aeroshell 64 an extreme pressure (EP) grease (MIL–G–21164D)
  9. Adrenol royco 11MS general purpose aircraft grease (MIL–M–7866)
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10
Q

It is the high temperature grease.
Mineral Oil and Microgel

A

Aeroshell grease 5
MIL–G–3545C

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11
Q

Operating temperature range of A.G 5

A

-23°C to +177°C

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12
Q

The general purpose grease.
Mineral Oil and Microgel

A

Aeroshell Grease 6
MIL–G–24139A

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13
Q

Operating temperature range of A.G 6

A

-40°C to +121°C

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14
Q

It is the advanced multipurpose grease.
Synthetic oil and Microgel

A

Aeroshell grease 7
MIL–PRF–23827C

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15
Q

Operating temperature range of A.G 7

A

-73°C to +149°C

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16
Q

It is a helicopter multipurpose grease.
Mineral Oil and Calcium Soap

A

Aeroshell Grease 14
MIL–G–25537C

17
Q

Operating temperature range of A.G 14

A

-54°C to +93°C

18
Q

It is the extreme temperature range grease.
Silicone oil and Organic thickener

A

Aeroshell grease 15
MIL–G–25013E

19
Q

Operating temperature range of A.G 15

A

-73°C to +232°C

20
Q

It is composed of synthetic hydrocarbon oil thickened with micro gel

A

Aeroshell 22
MIL–PRF–81322G

21
Q

Operating temperature range of A.G 22

A

-65°C to +204°C

22
Q

It is composed of Lithium complex thickened synthetic base oil.

A

Aeroshell universal airframe grease
MIL–PRF–23827C / BMS 3-33

23
Q

Operating temperature range of Aeroshell Universal Airframe Grease

A

-73°C to +121°C

24
Q

Four (4) benefits of Aeroshell Grease 33 in operators.

A
  1. Reduces inventories
  2. Easier maintainability
  3. Reduced maintenance labor costs
  4. Less chance of product mis
25
Q

Companies aeroshell grease 33 fortified with 5% molybdenum disulphide.

A

Aeroshell 64
MIL–G–21164D

26
Q

It enhanced the aeroshell grease 33 by added of solid lubricants.

A

Aeroshell 64
MIL–G–21164D

27
Q

Operating temperature range of A.G 64

A

-73°C to +121°C

28
Q

It is a smooth, gray-black colored grease.

A

Adrenol Royco 11MS
MIL–M–7866

29
Q

Operating temperature range of Adrenol Royco 11MS

A

-40°F to 300°F

30
Q

It is use to remain in contact with and lubricants moving surfaces without leaking out under the force of gravity.

A

Grease

31
Q

Advantages of Greases

A

Stay where it is placed, easy to control

Excellent sealing capability

Can withstand heavy shock load

Requires less frequent application

32
Q

Advantage of Oils

A

The most effective lubricant

Excellent cleaning and flushing capability

Can be used in recirculative system

Within Centralized system, generally more stable than grease

33
Q

Disadvantages of Greases

A

Has a lower operating temperature than oil

Harden in bearing in higher-temperature application

Requires greater pump pressure and line size to move grease around centralized system

Introduced contamination from poor manual greasing

34
Q

Disadvantages of Oils

A

More difficult to control surface area

Requires mechanical seals to control leakage

35
Q

Functional Properties of Grease

A

Grease functions as a sealant to minimize leakage and to keep out contaminants.

Grease is easier to contain than oil.

Grease holds solid lubricants in suspension.

Fluid level does not have to be controlled and monitored.

AC FUELS (1 decks)

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