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Contents of the Design Process PDF

List of 19 Design Process Formulas

Battery Weight Fraction

Cost Index given Minimum Design Index

Electric Power for Wind Turbine

Fuel Load

Induced Inflow Ratio in Hover

Maximum Payload Capability

Minimum Design Index

Mission Fuel

Period of Design Index given Minimum Design Index

Priority of Objective Cost in Design Process given Minimum Design Index

Priority of Objective Period of Design given Minimum Design Index

Priority of Objective Weight in Design Process given Minimum Design Index

Propulsion Net Thrust

Range Increment of Aircraft

Reserve Fuel

Summation of Priorities of all Objectives that need to be Minimized

Summations of Priorities of Objectives that need to be Maximized (Millitary planes)

Thrust-to-Weight Ratio given Vertical Velocity

Weight Index given Minimum Design Index

Variables used in Design Process PDF

C_Dmin Minimum Drag Coefficient
CI Cost Index
DI_min Minimum Design Index
E_battery Battery Specific Energy Capacity (Joule per Kilogram)
Ft Thrust Force (Newton)
k Lift Induced Drag Constant
LDmax_ratio Maximum Lift to Drag Ratio of Aircraft
m_af Air Mass Flow Rate (Kilogram per Second)
MTOW Maximum Take Off Weight (Kilogram)
P_b Scariness Priority (%)
P_c Cost Priority (%)
P_d Disposability Priority (%)
P_dynamic Dynamic Pressure (Pascal)
P_e Electric Power of Wind Turbine (Kilowatt)
P_f Flight Quality Priority (%)
P_m Maintainability Priority (%)
P_max Priority Sum of Objectives to be Maximized (%)
P_min Priority Sum of Objectives to be Minimized(%)
P_p Performance Priority (%)
P_r Producibility Priority (%)
P_s Stealth Priority (%)
P_t Period Priority (%)
P_w Weight Priority (%)
R Range of Aircraft (Kilometer)
R_D Design Range (Kilometer)
R_H Harmonic Range (Kilometer)
R_rotor Rotor Radius (Kilometer)
TI Period Index
TW Thrust-to-Weight Ratio
V_a Aircraft Velocity (Meter per Second)
V_f Flight Velocity (Meter per Second)
v_i Induced Velocity (Meter per Second)
V_J Velocity of Jet (Meter per Second)
V_v Vertical Airspeed (Meter per Second)
W_f Fuel Load (Kilogram)
W_misf Mission Fuel (Kilogram)
W_OE Operating Empty Weight (Kilogram)
W_pay Payload (Kilogram)
W_resf Reserve Fuel (Kilogram)
W_S Wing Loading (Pascal)
W_shaft Shaft Power (Kilowatt)
WBF Battery Weight Fraction
WI Weight Index
ΔR Range Increment of Aircraft (Kilometer)
η Efficiency
η_g Efficiency of Generator
η_transmission Efficiency of Transmission
λ Inflow Ratio
ω Angular Velocity (Radian per Second)

Constants, Functions and Measurements used in Design Process PDF

Constant: [g], 9.80665
Gravitational acceleration on Earth
Measurement: Length in Kilometer (km)
Length Unit Conversion
Measurement: Weight in Kilogram (kg)
Weight Unit Conversion
Measurement: Pressure in Pascal (Pa)
Pressure Unit Conversion
Measurement: Speed in Meter per Second (m/s)
Speed Unit Conversion
Measurement: Power in Kilowatt (kW)
Power Unit Conversion
Measurement: Force in Newton (N)
Force Unit Conversion
Measurement: Mass Flow Rate in Kilogram per Second (kg/s)
Mass Flow Rate Unit Conversion
Measurement: Angular Velocity in Radian per Second (rad/s)
Angular Velocity Unit Conversion
Measurement: Specific Energy in Joule per Kilogram (J/kg)
Specific Energy Unit Conversion

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