git.gag.com Git - sw/motorsim/blob - src/com/billkuker/rocketry/motorsim/CylindricalChamber.java

   1 package com.billkuker.rocketry.motorsim;\r
   2 \r
   3 import java.awt.Shape;\r
   4 import java.awt.geom.Area;\r
   5 import java.awt.geom.Rectangle2D;\r
   6 import java.beans.PropertyChangeEvent;\r
   7 import java.beans.PropertyChangeListener;\r
   8 \r
   9 import javax.measure.quantity.Length;\r
  10 import javax.measure.quantity.Pressure;\r
  11 import javax.measure.quantity.Volume;\r
  12 import javax.measure.unit.SI;\r
  13 \r
  14 import org.jscience.physics.amount.Amount;\r
  15 \r
  16 public class CylindricalChamber implements Chamber {\r
  17         \r
  18         private Amount<Length> length = Amount.valueOf(200, SI.MILLIMETER);\r
  19         private Amount<Length> oD = Amount.valueOf(31, SI.MILLIMETER);\r
  20         private Amount<Length> iD = Amount.valueOf(30, SI.MILLIMETER);\r
  21 \r
  22         public Amount<Pressure> burstPressure() {\r
  23                 return null;\r
  24         }\r
  25 \r
  26         public Amount<Volume> chamberVolume() {\r
  27                 return iD.divide(2).pow(2).times(Math.PI).times(length).to(SI.CUBIC_METRE);\r
  28         }\r
  29 \r
  30         public Amount<Length> getLength() {\r
  31                 return length;\r
  32         }\r
  33 \r
  34         public void setLength(Amount<Length> length) {\r
  35                 this.length = length;\r
  36         }\r
  37 \r
  38         public Amount<Length> getID() {\r
  39                 return iD;\r
  40         }\r
  41 \r
  42         public void setID(Amount<Length> id) {\r
  43                 iD = id;\r
  44         }\r
  45         \r
  46         public Amount<Length> getOD() {\r
  47                 return oD;\r
  48         }\r
  49 \r
  50         public void setOD(Amount<Length> oD) {\r
  51                 this.oD = oD;\r
  52         }\r
  53 \r
  54         @Override\r
  55         public Shape chamberShape() {\r
  56                 double ir = iD.doubleValue(SI.MILLIMETER) / 2;\r
  57                 double or = oD.doubleValue(SI.MILLIMETER) / 2;\r
  58                 double lenmm = length.doubleValue(SI.MILLIMETER);\r
  59                 double thick = or-ir;\r
  60 \r
  61                 Rectangle2D.Double l,r,t;\r
  62                 l = new Rectangle2D.Double(-or,0,thick,lenmm);\r
  63                 r = new Rectangle2D.Double(ir, 0, thick, lenmm);\r
  64                 t = new Rectangle2D.Double(-or,0,or*2,thick);\r
  65                 Area a = new Area(l);\r
  66                 a.add(new Area(r));\r
  67                 a.add(new Area(t));\r
  68                 return a;\r
  69         }\r
  70 \r
  71 }\r