gleguizamon/nozzle-calc Secret

## nozzle-calc
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Nozzle calculator</title>
</head>

<body style="background-color: #CCFFFF; font-family: 'Segoe UI';">
    <div align="center">
        <h1 style="margin: 0; font-weight: bold;">Nozzle Calculator</h1>
        <h4 style="margin: 0 0 15px 0; font-weight: 500;">Written by John Bolene.</h4>
        <p style="margin: 0;">This page allows you to calculate the nozzle size.</p>
        <p style="margin: 0;">Note that it is a best estimate</p>
        <br />
        <form onsubmit="nozzlesize(); return false;">
            <table>
                <tr>
                    <td>Enter core diameter:&nbsp;</td>

                    <td>
                        <input type="text" name="corediam" />
                    </td>
                    <td>
                        <select name="inmm" size="2">
                            <option value="in">inches&nbsp;</option>
                            <option value="mm">millimeters&nbsp;</option>
                        </select>
                    </td>

                    <td>Enter expected K value:&nbsp;</td>
                    <td>
                        <input type="text" name="isp" />
                    </td>
                </tr>

                <tr>
                    <td>Enter grain diameter:&nbsp;</td>

                    <td>
                        <input type="text" name="graindiam" />
                    </td>
                    <td>
                        <select name="inmm1" size="2">
                            <option value="in">inches&nbsp;</option>
                            <option value="mm">millimeters&nbsp;</option>
                        </select>
                    </td>
                    <td>Enter number of grains</td>
                    <td>
                        <select name="numgrains" size="9">
                            <option value="1">1&nbsp;</option>
                            <option value="2">2&nbsp;</option>
                            <option value="3">3&nbsp;</option>
                            <option value="4">4&nbsp;</option>
                            <option value="5">5&nbsp;</option>
                            <option value="6">6&nbsp;</option>
                            <option value="7">7&nbsp;</option>
                            <option value="8">8&nbsp;</option>
                            <option value="9">9&nbsp;</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>Enter grain length:&nbsp;</td>

                    <td>
                        <input type="text" name="grainlen" />
                    </td>
                    <td>
                        <select name="inmm2" size="2">
                            <option value="in">inches&nbsp;</option>
                            <option value="mm">millimeters&nbsp;</option>
                        </select>
                    </td>
                </tr>
            </table>

            <p>
                <input type="button" value="Calculate!" onclick="nozzlesize()" />
            </p>
            <hr>

            <p>
                Nozzle Size:&nbsp;
                <input readonly type="text" name="result" size="7" />
                &nbsp;inches&nbsp;&nbsp;&nbsp;
                <input readonly type="text" name="result1" size="7" />
                &nbsp;millimeters
            </p>

            <p>
                <textarea readonly rows="6" cols="60" name="report"></textarea>
            </p>

            <p>
                Hit the "Clear" button to clear the form and re-enter your data
                <br />
                <input type="reset" value="Clear" />
                <br />
            </p>
            <hr />
        </form>
    </div>
    <script>
        // Conversion factors
        var pi = 3.1415926;
        var mm2in = 0.03937;

        function nozzlesize() {
            var unitN = parent.document.forms[0].inmm.selectedIndex;
            if (unitN == 0) var corediaunit = 1;
            if (unitN == 1) var corediaunit = mm2in;

            var unitD = parent.document.forms[0].inmm1.selectedIndex;
            if (unitD == 0) var graindiaunit = 1;
            if (unitD == 1) var graindiaunit = mm2in;

            var unitC = parent.document.forms[0].inmm2.selectedIndex;
            if (unitC == 0) var grainlunit = 1;
            if (unitC == 1) var grainlunit = mm2in;

            var cored = parent.document.forms[0].corediam.value;
            var graind = parent.document.forms[0].graindiam.value;
            var numgrain =
                parent.document.forms[0].numgrains.options[
                    parent.document.forms[0].numgrains.selectedIndex
                ].value;
            var grainl = parent.document.forms[0].grainlen.value;
            var isp = parent.document.forms[0].isp.value;

            if (!parseInt(numgrain) || !parseInt(isp)) {
                alert("Make sure you have entered all data");
                return;
            }

            var cored = cored * corediaunit;
            var graind = graind * graindiaunit;
            var grainl = grainl * grainlunit;
            var corearea = (cored / 2) * (cored / 2) * pi;
            var totendarea = (graind / 2) * (graind / 2) * pi;
            var endarea = totendarea - corearea;
            var coresurfarea = cored * pi * grainl;
            var grainarea = 2 * endarea + coresurfarea;
            var totgrainarea = numgrain * (2 * endarea + coresurfarea);
            var result = Math.sqrt(totgrainarea / isp / 0.7854);
            var result1 = result / mm2in;
            var result = Math.round(result * 1000) / 1000;
            var result1 = Math.round(result1 * 1000) / 1000;
            document.forms[0].result.value = result;
            document.forms[0].result1.value = result1;

            document.forms[0].report.value =
                "Nozzle DATA\r\n" +
                `Core diameter:     ${cored.toFixed(3)} (in) \r\n` +
                `Grain diameter:    ${graind.toFixed(3)} (in) \r\n` +
                `Grain length:      ${grainl.toFixed(3)} (in) \r\n` +
                `Core end area:     ${corearea.toFixed(3)} (sq. in) \r\n` +
                `Core surf. area:   ${coresurfarea.toFixed(3)} (sq. in) \r\n` +
                `Grain area:        ${grainarea.toFixed(3)} (sq. in) \r\n` +
                `Total grain area:  ${totgrainarea.toFixed(3)} (sq. in) \r\n`;
        }
    </script>
</body>

</html>
	<!DOCTYPE html>
	<html lang="en">

	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Nozzle calculator</title>
	</head>

	<body style="background-color: #CCFFFF; font-family: 'Segoe UI';">
	<div align="center">
	<h1 style="margin: 0; font-weight: bold;">Nozzle Calculator</h1>
	<h4 style="margin: 0 0 15px 0; font-weight: 500;">Written by John Bolene.</h4>
	<p style="margin: 0;">This page allows you to calculate the nozzle size.</p>
	<p style="margin: 0;">Note that it is a best estimate</p>
	<br />
	<form onsubmit="nozzlesize(); return false;">
	<table>
	<tr>
	<td>Enter core diameter: </td>

	<td>
	<input type="text" name="corediam" />
	</td>
	<td>
	<select name="inmm" size="2">
	<option value="in">inches </option>
	<option value="mm">millimeters </option>
	</select>
	</td>

	<td>Enter expected K value: </td>
	<td>
	<input type="text" name="isp" />
	</td>
	</tr>

	<tr>
	<td>Enter grain diameter: </td>

	<td>
	<input type="text" name="graindiam" />
	</td>
	<td>
	<select name="inmm1" size="2">
	<option value="in">inches </option>
	<option value="mm">millimeters </option>
	</select>
	</td>
	<td>Enter number of grains</td>
	<td>
	<select name="numgrains" size="9">
	<option value="1">1 </option>
	<option value="2">2 </option>
	<option value="3">3 </option>
	<option value="4">4 </option>
	<option value="5">5 </option>
	<option value="6">6 </option>
	<option value="7">7 </option>
	<option value="8">8 </option>
	<option value="9">9 </option>
	</select>
	</td>
	</tr>
	<tr>
	<td>Enter grain length: </td>

	<td>
	<input type="text" name="grainlen" />
	</td>
	<td>
	<select name="inmm2" size="2">
	<option value="in">inches </option>
	<option value="mm">millimeters </option>
	</select>
	</td>
	</tr>
	</table>

	<p>
	<input type="button" value="Calculate!" onclick="nozzlesize()" />
	</p>
	<hr>

	<p>
	Nozzle Size:
	<input readonly type="text" name="result" size="7" />
	inches
	<input readonly type="text" name="result1" size="7" />
	millimeters
	</p>

	<p>
	<textarea readonly rows="6" cols="60" name="report"></textarea>
	</p>

	<p>
	Hit the "Clear" button to clear the form and re-enter your data
	<br />
	<input type="reset" value="Clear" />
	<br />
	</p>
	<hr />
	</form>
	</div>
	<script>
	// Conversion factors
	var pi = 3.1415926;
	var mm2in = 0.03937;

	function nozzlesize() {
	var unitN = parent.document.forms[0].inmm.selectedIndex;
	if (unitN == 0) var corediaunit = 1;
	if (unitN == 1) var corediaunit = mm2in;

	var unitD = parent.document.forms[0].inmm1.selectedIndex;
	if (unitD == 0) var graindiaunit = 1;
	if (unitD == 1) var graindiaunit = mm2in;

	var unitC = parent.document.forms[0].inmm2.selectedIndex;
	if (unitC == 0) var grainlunit = 1;
	if (unitC == 1) var grainlunit = mm2in;

	var cored = parent.document.forms[0].corediam.value;
	var graind = parent.document.forms[0].graindiam.value;
	var numgrain =
	parent.document.forms[0].numgrains.options[
	parent.document.forms[0].numgrains.selectedIndex
	].value;
	var grainl = parent.document.forms[0].grainlen.value;
	var isp = parent.document.forms[0].isp.value;

	if (!parseInt(numgrain) \|\| !parseInt(isp)) {
	alert("Make sure you have entered all data");
	return;
	}

	var cored = cored * corediaunit;
	var graind = graind * graindiaunit;
	var grainl = grainl * grainlunit;
	var corearea = (cored / 2) * (cored / 2) * pi;
	var totendarea = (graind / 2) * (graind / 2) * pi;
	var endarea = totendarea - corearea;
	var coresurfarea = cored * pi * grainl;
	var grainarea = 2 * endarea + coresurfarea;
	var totgrainarea = numgrain * (2 * endarea + coresurfarea);
	var result = Math.sqrt(totgrainarea / isp / 0.7854);
	var result1 = result / mm2in;
	var result = Math.round(result * 1000) / 1000;
	var result1 = Math.round(result1 * 1000) / 1000;
	document.forms[0].result.value = result;
	document.forms[0].result1.value = result1;

	document.forms[0].report.value =
	"Nozzle DATA\r\n" +
	`Core diameter: ${cored.toFixed(3)} (in) \r\n` +
	`Grain diameter: ${graind.toFixed(3)} (in) \r\n` +
	`Grain length: ${grainl.toFixed(3)} (in) \r\n` +
	`Core end area: ${corearea.toFixed(3)} (sq. in) \r\n` +
	`Core surf. area: ${coresurfarea.toFixed(3)} (sq. in) \r\n` +
	`Grain area: ${grainarea.toFixed(3)} (sq. in) \r\n` +
	`Total grain area: ${totgrainarea.toFixed(3)} (sq. in) \r\n`;
	}
	</script>
	</body>

	</html>