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   Preliminary Design PDF
Formulas : 27
Size : 0 kb
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Contents of the Preliminary Design PDF

List of 27 Preliminary Design Formulas

Crew Weight given Fuel and Empty Weight Fraction
​Go
Crew Weight given Takeoff Weight
​Go
Design Range given Range Increment
​Go
Empty Weight Fraction
​Go
Empty Weight Fraction given Takeoff Weight and Fuel Fraction
​Go
Empty Weight given Empty Weight Fraction
​Go
Empty Weight given Takeoff Weight
​Go
Fuel Fraction
​Go
Fuel Fraction given Takeoff Weight and Empty Weight Fraction
​Go
Fuel Weight given Fuel Fraction
​Go
Fuel Weight given Takeoff Weight
​Go
Harmonic Range given Range Increment
​Go
Helicopter Flying Range
​Go
Maximum Lift over Drag
​Go
Optimum Range for Jet Aircraft in Cruising Phase
​Go
Optimum Range for Prop-Driven Aircraft in Cruising Phase
​Go
Payload Weight given Fuel and Empty Weight Fractions
​Go
Payload Weight given Takeoff Weight
​Go
Preliminary Endurance for Jet Aircraft
​Go
Preliminary Endurance for Prop-Driven Aircraft
​Go
Preliminary Take Off Weight Built-up for Manned Aircraft
​Go
Preliminary Take off Weight Built-Up for Manned Aircraft given Fuel and Empty Weight Fraction
​Go
Takeoff Weight given Empty Weight Fraction
​Go
Takeoff Weight given Fuel Fraction
​Go
Velocity at Maximum Endurance given Preliminary Endurance for Prop-Driven Aircraft
​Go
Velocity for Maximizing Range given Range for Jet Aircraft
​Go
Winglet Friction Coefficient
​Go

Variables used in Preliminary Design PDF

  1. AR Aspect Ratio of a Wing
  2. c Power Specific Fuel Consumption (Kilogram per Hour per Watt)
  3. CD Drag Coefficient
  4. CL Lift Coefficient
  5. DTW Desired Takeoff Weight (Kilogram)
  6. E Endurance of Aircraft (Second)
  7. Ef Empty Weight Fraction
  8. Ff Fuel Fraction
  9. FW Fuel Weight to be Carried (Kilogram)
  10. GT Weight of Fuel (Kilogram)
  11. KLD Landing Mass Fraction
  12. LDEmaxratio Lift to Drag Ratio at Maximum Endurance
  13. LDmaxratio Maximum Lift-to-Drag Ratio of Aircraft
  14. OEW Operating Empty Weight (Kilogram)
  15. PE Preliminary Endurance of Aircraft (Second)
  16. PYL Payload Carried (Kilogram)
  17. R Range of Aircraft (Kilometer)
  18. RD Design Range (Kilometer)
  19. RH Harmonic Range (Kilometer)
  20. Ropt Optimum Range of Aircraft (Kilometer)
  21. Rewl Winglet Reynolds Number
  22. S Reference Area (Square Meter)
  23. Swet Aircraft Wetted Area (Square Meter)
  24. V(Emax) Velocity for Maximum Endurance (Knot)
  25. VL/D(max) Velocity at Maximum Lift to Drag Ratio (Knot)
  26. Wa Aircraft Weight (Newton)
  27. Wc Crew Weight (Kilogram)
  28. Wf Weight of Aircraft at End of Cruise Phase (Kilogram)
  29. Wi Weight of Aircraft at Beginning of Cruise Phase (Kilogram)
  30. WL(beg) Weight of Aircraft at Beginning of Loiter Phase (Kilogram)
  31. WL,end Weight of Aircraft at End of Loiter Phase (Kilogram)
  32. ΔR Range Increment of Aircraft (Kilometer)
  33. η Propeller Efficiency
  34. ηr Rotor Efficiency
  35. μfriction Coefficient of Friction
  36. ξ Coefficient of Power loss

Constants, Functions and Measurements used in Preliminary Design PDF

  1. Function: ln, ln(Number)
    The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function.
  2. Function: log10, log10(Number)
    The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function.
  3. Measurement: Length in Kilometer (km)
    Length Unit Conversion
  4. Measurement: Weight in Kilogram (kg)
    Weight Unit Conversion
  5. Measurement: Time in Second (s)
    Time Unit Conversion
  6. Measurement: Area in Square Meter (m²)
    Area Unit Conversion
  7. Measurement: Speed in Knot (kn)
    Speed Unit Conversion
  8. Measurement: Force in Newton (N)
    Force Unit Conversion
  9. Measurement: Specific Fuel Consumption in Kilogram per Hour per Watt (kg/h/W)
    Specific Fuel Consumption Unit Conversion
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Free Preliminary Design PDF

Get Free Preliminary Design PDF for Download today. Examples are included after each Formula with a link to a live Calculator! All the Formulas and Calculators support Unit Conversion as well. This PDF features 27 calculators from Aircraft Mechanics. Inside, you'll discover a list of formulas such as Preliminary Take Off Weight Built-up for Manned Aircraft, Fuel Fraction and 27 more formulas!. The Variables, Functions and Constants are summarized at the end. Explore and share Preliminary Design PDFs!

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