Last edited 3/9/2006 by Raymond Wagner
This code allows one to calculate the characteristics of a certain class of piston engines.
Yellow
Must enter in Value
Green
Functions used
Grey
Compares Other Methodolies to Methodology Used in this Code
Light Red
Range of Values for Plotting/Optimizing Purposes
Heywood pg 43
(Compression Ratio)
Number of Cylinders
Note: Sets Power of Engine
Heywood pg 50
Engine Mass
Exhaust Mass
Rated Max Power
Note: It is not a function of altitude or PS
Similar to
Heywood pg 723
Note: Assumed to be functions of mass flow, unlike Heywood, this includes volumetric efficiency effects
Note: Assumed to occur at Max Torque, Sea Level Standards
or
Note: Fuel flow is assumed to be
proportional to indicated power ( P
Fuel Flow (Volume/Hour)
Note: Density of Fuel
Set up for contour plot, need 2D function without units:
Von Mices, page 365,
Equation 11
Note: For Reference ONLY
Reference
Torenbeek page 104
Note: For Reference ONLY
Von Mices, page 365,369
Note: Vary "p" and "c" to correlate to engine models more precisely
Note: For Reference ONLY
Manufacturer rated data