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