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Impact Study of Synthetic and Alternative Fuel Usage in Army Aircraft Propulsion Systems - 1981

Moses, C. A.
Valtierra, M. L.

Naval Air Propulsion Center
U.S. Army Mobility Equipment Research and Development Command

Table of Contents

Section 1
216kb

I

Introduction 1

II

Fuels for Army Aviation Gas Turbine Engines 3
 

A

JP-4 3

B

JP-5, JP-8, Jet-A 9
Section 2
505kb

III

Impact of Fuel Properties on Army Aircraft Systems 12
 

A

Hydrogen Content 12

B

Hydrocarbon Composition 23

C

Viscosity and Volatility 32

D

Lubricity 36

E

Thermal Stability 38

F

Summary 40
Section 3
391kb

IV

Army Aircraft Engines and Fuel Systems 41
 

A

Army Aircraft 41

B

Army Aircraft Fuel Systems 43
 

1

H-1 Fuel System 44

2

H-6 Fuel System 48

3

H-47 Fuel System 49

4

H-54 Fuel System 49

5

H-58 Fuel System 50

6

H-60 Fuel System 52

7

H-64 Fuel System 54

8

C-12 Fuel System 54

9

OV-1 Fuel System 57

10

U-21 Fuel System 57

11

UV-18 Fuel System 57
Section 4
431kb

C

Airframe Fuel System Components 57
 

1

Self-sealing Hoses 59

2

Gate Valve, Motorized 61

3

Check Valve, Poppet 61

4

Check Valve, Swing/Flapper 62

5

Closed-Circuit Receivers 62

6

Electric Fuel Pumps 63

7

Self-sealing Breakaway Valves 63

8

Drain Valve, Poppet 64

9

Vent Valve, Poppet 64

10

Fuel Tank Cover Gasket 64

11

Shutoff Valves 64

12

Fuel Cell Bladders 67

D

Potential Fuel Sensitive Areas - Engine Components 68
 

1

T53 Fuel Control 69

2

T55-L-11a Fuel Control 70

3

T63-700/-720 Fuel Control 71

4

T55-7C Fuel Pump 71

5

T55-l-11A/-11D Fuel Pump 72

E

Potential Fuel Sensitive Areas - Auxiliary Power Units 72

F

Non-metallic Materials Used in Fuel-wetted Systems 73
 

1

Buna N 73

2

Fluorosilicone 74

3

Teflon 74

4

Nylon 75

5

Silicone 75

6

Epoxy, Fibers, Dyallyl phthalate, Delrin, and Vespel 76

7

Fluorocarbon 76

G

Summary 77
Section 5
322kb

V

Qualification Procedures for Engine and Fuel System Components 78
 

A

Engine Qualification 79

B

Fuel System Component Qualification 82

VI

Summary 87

VII

Recommendations 89
References 90
Appendices
Appendix A
679kb
 

A

Airframe Fuel-wetted System Components A-1
Appendices
360kb

B

Engine Fuel-wetted System Components B-1

C

Auxiliary Power Unit Fuel-wetted Components C-1

D

Personnel Contacted From Airframe, Engine, Auxiliary Power Unit, and Component Manufacturers D-1