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-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:217c546250d736c4a5ad9b469b73a9b7209b5ff1e5db79ce32388be8ee290870"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "Chapter 12: Structural components of aircraft"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Example 12.1 Pg.No. 390"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from __future__ import division\n",
-      "import math\n",
-      "\n",
-      "D=4              #diameter of rivet(mm)\n",
-      "t_skin=2.5         #thickness of fuselage skin(mm)\n",
-      "t_strap=1.2          #thickness of straps (mm)\n",
-      "T=120               #shear stress (N/mm^2)\n",
-      "A=math.pi*D**2/4    #rivet area\n",
-      "Pfb=2*A*T\n",
-      "\n",
-      "b=Pfb/t_skin/12.5/10+4\n",
-      "print \"allowable rivet spacing = %2.1f mm \\n\"%(b)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "allowable rivet spacing = 13.7 mm \n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 7
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Example 12.2 Pg.No.392"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "from __future__ import division\n",
-      "import math\n",
-      "\n",
-      "l1=20          #distace between A&D (mm)\n",
-      "l2=25          #distace between C&D (mm)\n",
-      "l3=75          #distace between C&force location (mm)\n",
-      "P=5        #external load(kN)\n",
-      "r=(l1**2+l2**2)**0.5\n",
-      "sum_r2=2*l1**2+4*r**2\n",
-      "\n",
-      "#eqn 12.6 S=Pe*r/Sum(r2)\n",
-      "Pe=P*l3\n",
-      "S=Pe/sum_r2*r\n",
-      "print \"Resultant shear force in the A and B = %2.2f kN\\n\"%(S)\n"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Resultant shear force in the A and B = 2.45 kN\n",
-        "\n"
-       ]
-      }
-     ],
-     "prompt_number": 11
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [],
-     "language": "python",
-     "metadata": {},
-     "outputs": []
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
-\ No newline at end of file