Q2 Z2,(Q2) Z2(Q2) - Institute for Water Resources - U.S. Army

Analysis of Tow in Motion 66
Introduction 66
Tow Resistance Formu!ations 67
Tractive-Effort Function 70
Constant Velocity State 72
TCSLS of Tow Speed Function 73
Acceleration and Deceleration 79
Note on Calculation of Mass 84
Delay Analysis of Tows 85
Introduction 85
Locking 87
Note on Capacity of a Waterway and Optimal Tolls 95
Making and Breaking Tow 103
Miscellaneous Delays 105
Note on Frequency of Miscellaneous Delays 112
Recapitulation of Tow Linehaul Process Function 113
Obtaining Costs from Process Function for Barge Tows 118
V. RAIL LINEHAUL PROCESS FUNCTION 121
Introduction 101
Form of Rail Linehaul Process Function 122
Cargo Capacity and Light Weight of Rail Tin 124
Analysis of Train in Motion 130
Introduction 130
Tractive-Effort Function 130
Drag-Force Function 131
Adjustment for Grade and Curvature 134
Constant Velocity State 136
Acceleration 138
Deceleration 140
Rail Linehaul Delays 141
Introduction 141
Delays en Route 142
Rail Productivity Relationships 147
Rail Costs 159
Introduction 159
Costs of Linehaul Process • 161
Cost Curves for Linehaul Process 171
Cost Curves for Railway Firm 174
Summary 183
VI. SUMMARY AND CONCLUSIONS 184
FOOTNOTES 193
BIBLIOGRAPHY 204
VITA 209
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