142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
// Module: 10520c.c
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// Author: Phil Schubert
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// Date started: 12/03/99
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// Purpose: Models a Continental IO-520-M Engine
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// Called by: FGSimExec
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//
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// Copyright (C) 1999 Philip L. Schubert (philings@ozemail.com.au)
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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//
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// Further information about the GNU General Public License can also
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// be found on the world wide web at http://www.gnu.org.
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//
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// FUNCTIONAL DESCRIPTION
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// ------------------------------------------------------------------------
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// Models a Continental IO-520-M engine. This engine is used in Cessna
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// 210, 310, Beechcraft Bonaza and Baron C55. The equations used below
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// were determined by a first and second order curve fits using Excel.
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// The data is from the Cessna Aircraft Corporations Engine and Flight
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// Computer for C310. Part Number D3500-13
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//
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// ARGUMENTS
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// ------------------------------------------------------------------------
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//
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//
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// HISTORY
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// ------------------------------------------------------------------------
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// 12/03/99 PLS Created
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// 07/03/99 PLS Added Calculation of Density, and Prop_Torque
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// 07/03/99 PLS Restructered Variables to allow easier implementation
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// of Classes
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// 15/03/99 PLS Added Oil Pressure, Oil Temperature and CH Temp
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// ------------------------------------------------------------------------
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// INCLUDES
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// ------------------------------------------------------------------------
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#ifndef _10520D_HXX_
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#define _10520D_HXX_
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#include <iostream>
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#include <math.h>
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class FGEngine {
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private:
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// Control and environment inputs
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float IAS;
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// 0 = Closed, 100 = Fully Open
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float Throttle_Lever_Pos;
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// 0 = Full Course 100 = Full Fine
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float Propeller_Lever_Pos;
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// 0 = Idle Cut Off 100 = Full Rich
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float Mixture_Lever_Pos;
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// Engine Specific Variables used by this program that have limits.
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// Will be set in a parameter file to be read in to create
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// and instance for each engine.
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float Max_Manifold_Pressure;
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float Max_RPM;
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float Min_RPM;
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float Max_Fuel_Flow;
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float Mag_Derate_Percent;
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float MaxHP;
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float Gear_Ratio;
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// Initialise Engine Variables used by this instance
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float Percentage_Power;
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float Manifold_Pressure; // Inches
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float RPM;
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float Fuel_Flow; // lbs/hour
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float Torque;
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float CHT;
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float Mixture;
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float Oil_Pressure; // PSI
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float Oil_Temp; // Deg C
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float HP;
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float RPS;
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float Torque_Imbalance;
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float Desired_RPM;
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// Initialise Propellor Variables used by this instance
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float FGProp1_Angular_V;
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float FGProp1_Coef_Drag;
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float FGProp1_Torque;
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float FGProp1_Thrust;
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float FGProp1_RPS;
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float FGProp1_Coef_Lift;
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float Alpha1;
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float FGProp1_Blade_Angle;
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float FGProp_Fine_Pitch_Stop;
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float FGProp_Course_Pitch_Stop;
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// Other internal values
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float Rho;
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// Calculate Engine RPM based on Propellor Lever Position
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float Calc_Engine_RPM (float Position);
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public:
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// set initial default values
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void init();
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// update the engine model based on current control positions
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void update();
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inline void set_IAS( float value ) { IAS = value; }
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inline void set_Throttle_Lever_Pos( float value ) {
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Throttle_Lever_Pos = value;
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}
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inline void set_Propeller_Lever_Pos( float value ) {
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Propeller_Lever_Pos = value;
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}
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inline void set_Mixture_Lever_Pos( float value ) {
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Mixture_Lever_Pos = value;
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}
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// accessors
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inline float get_RPM() const { return RPM; }
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inline float get_FGProp1_Thrust() const { return FGProp1_Thrust; }
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inline float get_Rho() const { return Rho; }
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};
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#endif _10520D_HXX_
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