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Airport Planning and Design

Air Trip Distribution Models

- Constant of Proportionality for greater Air Trip Distances
- Constant of Proportionality when Travel by Air Passengers between Cities i and j is Given
- Constant of Proportionality when Travel by Air Passengers between Cities is Given
- Cost of Travel between i and j when Travel by Air Passengers between Cities is Given
- Distance between i and j when Travel by Air Passengers between Cities i and j is Given
- Population of the Destination City when Travel by Air Passengers between Cities i and j is Given
- Population of the Origin City when Travel by Air Passengers between Cities i and j is Given
- Total Air Trips generated in City i for greater Air Trip Distances
- Total Air Trips generated in City i when Travel by Air Passengers between Cities is Given
- Total Air Trips generated in City j for greater Air Trip Distances
- Total Air Trips generated in City j when Travel by Air Passengers between Cities is Given
- 4 More formulas!

Modified form of Gravity Model used in Canada for Travel by Air Passengers between Cities

- Constant of Proportionality when Travel by Air Passengers between Cities i and j is Given
- Distance between Cities i and j when Travel by Air Passengers between the Cities is Given
- Indicator of Attraction to City j when Travel by Air Passengers between the Cities is Given
- Indicator of Road Condition around City i when Travel by Air Passengers between the Cities is Given
- Percent of Manufacturing and Retail Employment of Total Employment at i
- Percent of Manufacturing and Retail Employment of Total Employment at J
- Population at City i when Travel by Air Passengers between Cities i and j is Given
- Population at city j when Travel by Air Passengers between Cities i and j is Given
- Seats Available between i and j when Travel by Air Passengers between the Cities is Given
- Service Reliability Indicator when Travel by Air Passengers between the Cities is Given
- Travel by Air Passengers between Cities i and j
- 1 More formulas!

Aircraft Runway Length Estimation

- True Mach Number
- Aerodrome Reference Temperature when Corrected Take off Length is Given
- Aircraft Gross Wing Area when Drag Force to the Vehicle Body is Given
- Aircraft Gross Wing Area when Lifting Force provided by the Wing-body of the Vehicle is Given
- Desired Take off Weight
- Drag Coefficient Wing Area when Drag Force to the Vehicle Body is Given
- Drag Force to the Vehicle Body
- Friction Force due to Rolling Resistance
- Fuel Weight to be Carried when Desired Take off Weight is Given
- Lift Coefficient when Lifting Force provided by the Wing-body of the Vehicle is Given
- Lifting Force provided by the Wing-body of the Vehicle
- 16 More formulas!

Engine-Out Takeoff Case under Estimation of Runway Length

Aborted Takeoff

- Distance to Accelerate and Stop when Full Strength Pavement Distance is Given
- Field Length (Total Amount of Runway needed)
- Full Strength Pavement Distance
- Full Strength Pavement Distance when Field Length is Given
- Stopway Distance when Field Length is Given
- Stopway Distance when Full Strength Pavement Distance is Given

Continued Takeoff

- Clearway Distance for a Continued Takeoff
- Clearway Distance when Field Length under Continued Takeoff is Given
- Clearway Distance when Takeoff Run is Given
- Distance of the 35 ft. Obstacle when Takeoff Run is Given
- Distance to Clear 35 ft. Obstacle when Clearway Distance for a Continued Takeoff is Given
- Field Length (Total Amount of Runway Needed) under Continued Takeoff
- Full Strength Pavement Distance when Field Length is Given
- Liftoff Distance when Clearway Distance for a Continued Takeoff is Given
- Takeoff Run for Continued Takeoff

Generation-Distribution Models

- Air Trips between i and j
- Air Trips in Year y for the Stated Purpose under Leisure Category
- Country Pair Relation Index when Air Traffic between Stations i and j is Given
- Distance between Cities i and j when Volume of Air Passenger Traffic between the Cities is Given
- Factor to adjust for Quantum Effects when Air Trips between i and j is Given
- Income for Leisure when Air Trips for the Stated Purpose under Leisure Category is Given
- Mode-Specific Econometric Model for Air Traffic between Stations i and j
- Population at i when Air Trips between i and j is Given
- Population at Origin when Air Trips in Year y for the Stated Purpose under Leisure Category
- Population of City i when Volume of Air Passenger Traffic between City i and City j
- Population of City j when Volume of Air Passenger Traffic between City i and City j
- 5 More formulas!

Integrated Demand Forecast Framework

- Air Transport Movement Per Aircraft
- Airline Industry Wages
- Average Trip Length when Passenger Enplanements is Given
- Jet Fuel Price when Yield is Given
- Passenger Enplanements
- Real Gross National Product
- Real Yield when Revenue Passenger Miles is Given
- Regression Model Formulation for Yield
- Revenue Passenger Miles
- Revenue Passenger Miles when Passenger Enplanements is Given

Multi-Airport Region Forecast Framework

- Airline Service (Weekly Departing Flights) from Airport 1
- Airline Service (Weekly Departing Flights) from Airport 1 from the Utility Function
- Airline Service (Weekly Departing Flights) from Airport 2,3
- Airline Service (Weekly Departing Flights) from Airport 2,3 from the Utility Function
- Model Formulation for International Passenger Forecasts developed by IATA
- Model Formulation for International Passenger Forecasts developed by IATA
- Percent of Passengers from the Utility Function
- Percent of Passengers in Analysis Zone using Airports 1, 2 and 3
- Percent of Passengers in Analysis Zone using Airports 2 and 3
- Percent of Passengers in Analysis Zone using Airports 2 and 3 from the Utility Function
- Travel Times from Analysis Zone to Airports 1 from the Utility Function
- 4 More formulas!

Normal Takeoff Cases under Estimation of Runway Length

- Clearway Distance
- Clearway Distance when Field Length is Given
- Clearway Distance when Takeoff Run is Given
- Field Length
- Full Strength Pavement Distance when Field Length is Given
- Lift off Distance when Clearway Distance is Given
- Takeoff Distance when Clearway Distance is Given
- Takeoff Distance when Takeoff Run is Given
- Takeoff Run

Stalling and Lift-off Speeds

- Aircraft Gross Wing Area when Vehicle Speed Under Steady Flight Conditions is Given
- Aircraft Gross Wing Area when Vehicle Stalling Speed is Given
- Lift Coefficient when Vehicle Speed Under Steady Flight Conditions is Given
- Maximum Attainable Lift Coefficient is Given when Vehicle Stalling Speed is Given
- Vehicle Speed Under Steady Flight Conditions
- Vehicle Stalling Speed when Maximum Attainable Lift Coefficient is Given

Taxiway and Exit Taxiway Design

Taxiway Design

Braking Distance

- Assumed Brake application speed when Distance for Deceleration in a normal Braking mode is Given
- Deceleration rate when Distance for Deceleration in a normal Braking mode (S3) is Given
- Deceleration rate when Distance for Deceleration in a normal Braking mode is Given
- Distance required for Deceleration in a normal Braking mode to a Nominal Takeoff Speed
- Distance required for Deceleration in a normal Braking mode to a Nominal Takeoff Speed (S3)
- Distance required for Transition from Maingear Touchdown to create Stabilized Braking Configuration
- Distance required for Transition from Maingear Touchdown to create Stabilized Braking Configuration
- Nominal Turn-Off Speed when Distance for Deceleration in a normal Braking mode is Given
- Nominal Turn-off Speed when Distance required for Deceleration in a normal Braking mode is Given
- Threshold Speed when Distance required for Transition from Maingear Touchdown is given
- Threshold Speed when when Distance for Deceleration in a normal Braking mode is Given
- 2 More formulas!

Design of Fillets

- Aircraft Datum Length when Length of each Wedge-shaped End of Fillet is Given
- Distance along the Straight Taxiway Center line when Length of each End of Fillet is Given
- Length of Each Wedge-Shaped End of the Fillet
- Maximum Deviation permissible without Filleting
- Maximum Value of the Deviation of the Main Undercarriage when Radius of the Fillet is Given
- Minimum Safety Margin when Maximum Deviation permissible without Filleting is Given
- Minimum Safety Margin when Radius of the Fillet is Given
- Radius of Taxiway Centerline when Radius of the Fillet is Given
- Radius of the Fillet
- Taxiway Width when Maximum Deviation permissible without Filleting is Given
- Track of Main Undercarriage when Maximum Deviation permissible without Filleting is Given
- 2 More formulas!

Taxiway Width

- Clearance between Outer Main Gear Wheel and Taxiway Edge when Taxiway Width is Given
- Clearance between Outer Main Gear Wheel and Taxiway Edge when Wing Tip Clearance is Given
- Clearance when Separation Distance between Taxiway and Object is Given
- Lateral Deviation when Separation Distance between Aircraft Stand Taxi lane-to-object is Given
- Maximum Outer Main Gear Wheel Span when Taxiway Width is Given
- Separation Distance between a Runway and a Parallel Taxiway
- Separation Distance between Aircraft Stand Taxi lane-to-object
- Separation Distance between Taxiway and Object
- Separation Distance when Wing Tip Clearance is Given
- Strip Width when Separation Distance between a Runway and a Parallel Taxiway is Given
- Taxiway Width
- 8 More formulas!

Turning Radius

- Taxiway Width when Turning Radius is Given
- Deceleration when Sight Distance is Given
- Deflection Angle of the Entrance Curve
- Deflection angle of the Entrance Curve when Deflection of the Angle at Central Curve is Given
- Deflection of the Angle at Central Curve
- Deflection of the Angle at Central Curve when Length of Central Curve is Given
- Distance between Midway Points of Main Gears and the Edge of Taxiway Pavements
- Horonjeff Equation for Turning Radius of Taxiway
- Length of Central Curve
- Length of Entrance Curve when Deflection Angle of the Entrance Curve is Given
- Radius of Central Curve when Length of Central Curve is Given
- 8 More formulas!

Typical Regression-based Econometric Model to Predict Total Air Passengers

- Boston Regional Income Per Capita
- Boston-based Domestic Air Passengers Per Capita
- Boston-based International Air Passengers Per Capita
- Per-capita Income of Catchment Area
- Population of Catchment Area
- Predicted Passenger Enplanements in a Regional Airport in Virginia
- Real Average Yield Per Domestic Passenger-Mile
- Real Average Yield Per International Passenger-Mile
- U.S. Average Airfare Per Mile

Visual Aids

- Allard's Law for Illumination
- Area of the Light when modified Illuminance of Allard's Law is Given
- Effective Intensity
- Effective Intensity for an abrupt Flash of Constant Illuminance
- Flash producing relatively Constant Illuminance
- Illuminance when Effective Intensity is Given
- Instantaneous Intensity when Effective Intensity for abrupt Flash Illuminance is Given
- Instantaneous Intensity when Effective Intensity is Given
- Intensity of Light when modified Illuminance of Allard's Law is Given
- Intensity when Illumination is Given
- Luminance of the background of the Light when modified Illuminance of Allard's Law is Given
- 6 More formulas!

Railway Engineering

Track and Track Stresses

- Diameter of Wheel when Lap of Flange is Given
- Extra Track Width in Curves
- Lap of Flange when Diameter of Wheel is Given
- Lap of Flange when Extra Width of Track is Given
- Radius of Curve when Extra Width is Given
- Wheel Base when Extra Width is Given

Lateral Forces

- Characteristic Length when Seat Load on Rail is Given
- Maximum Contact Shear Stress
- Maximum Load on Rail Seat
- Radius of Wheel when Shear Stress is Given
- Section Modulus of Rail when Seat Load is Given
- Sleeper Spacing when Seat Load on Rail is Given
- Slip of Wheel
- Static Wheel Load when Shear Stress is Given
- Wheel Load when Seat Load is Given

Vertical Loads

- Bending Moment on Rail
- Characteristic Length of Rail
- Crank Pin Diameter when Hammer Blow is Given
- Dynamic Overload at Joints
- Flexural Stiffness when Characteristic Length is Given
- Force in Connecting Rod
- Hammer Blow
- Isolated Vertical Load when Moment is Given
- Length of Connecting Rod when Vertical Component is Given
- Mass of Reciprocating Parts when Force is Given
- Mass per Wheel when Dynamic Load is Given
- 15 More formulas!

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