https://wiki.seasteading.org/index.php?title=Current_Loads&feed=atom&action=historyCurrent Loads - Revision history2024-03-28T18:42:16ZRevision history for this page on the wikiMediaWiki 1.31.1https://wiki.seasteading.org/index.php?title=Current_Loads&diff=7575&oldid=prevThebastidge at 20:07, 27 July 20172017-07-27T20:07:54Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">==</ins>Existing datapoints:<ins class="diffchange diffchange-inline">==</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Existing datapoints:</div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [http://seagrant.mit.edu/news/press_releases.php?ID=54 This article] contains useful data. A 3250m<sup>3</sup> blunt object is dragged at an estimated speed of 0.5 knots, requiring 12.4HP or ~10kW of electricity input, or 36MJ/h. If said electricity was generated by a diesel generator, that would amount to 3L of diesel an hour at 1/3 efficiency, or two tons of diesel fuel a month.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [http://seagrant.mit.edu/news/press_releases.php?ID=54 This article] contains useful data. A 3250m<sup>3</sup> blunt object is dragged at an estimated speed of 0.5 knots, requiring 12.4HP or ~10kW of electricity input, or 36MJ/h. If said electricity was generated by a diesel generator, that would amount to 3L of diesel an hour at 1/3 efficiency, or two tons of diesel fuel a month.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This displacement should correspond to 16 people. 0.5 knots is only hald the calculated maximum value, but it might be a good average. If 1 knot is desired continuously, that would imply a fourfold increase in fuel costs.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This displacement should correspond to 16 people. 0.5 knots is only hald the calculated maximum value, but it might be a good average. If 1 knot is desired continuously, that would imply a fourfold increase in fuel costs.</div></td></tr>
</table>Thebastidgehttps://wiki.seasteading.org/index.php?title=Current_Loads&diff=7574&oldid=prevThebastidge at 20:07, 27 July 20172017-07-27T20:07:25Z<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 20:07, 27 July 2017</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4" >Line 4:</td>
<td colspan="2" class="diff-lineno">Line 4:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The drag on a body strongly depends on its shape. Unless the seastead design under consideration is essentially a boat, data from boats is not applicable. Here we will consider various blunt bodies, such as cylinders and spheres, which should provide a decent approximation for many seastead designs.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The drag on a body strongly depends on its shape. Unless the seastead design under consideration is essentially a boat, data from boats is not applicable. Here we will consider various blunt bodies, such as cylinders and spheres, which should provide a decent approximation for many seastead designs.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The overall scale of the design under consideration is another important factor. It influences both the drag forces, as well as the amount of people to split to fuel bill with. For instance: clubstead carries 200 passengers, in a 20.000st structure, which is a 100st per person. From a different perspective: 50lb/sqft of indoor space is used, where this is about 1/3 of total weight; the rest is structural and ballast. This figure depends on the type of design, but 100ton/person does match some estimates from other designs. For smaller seasteads the ratio is worse however; we will work with 200tons per person.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The overall scale of the design under consideration is another important factor. It influences both the drag forces, as well as the amount of people to split to fuel bill with. For instance: clubstead carries 200 passengers, in a 20.000st structure, which is a 100st per person. From a different perspective: 50lb/sqft of indoor space is used, where this is about 1/3 of total weight; the rest is structural and ballast. This figure depends on the type of design, but 100ton/person does match some estimates from other designs. For smaller seasteads the ratio is worse however; we will work with 200tons per person.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* [[Current|Currents]] generally do not exceed 5 knots, or 2.5m/s. It is assumed that by choice of <del class="diffchange diffchange-inline">geograpic </del>location, the type of current encountered can be kept down to a maximum of one knot, or 0.5m/s.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* [[Current|Currents]] generally do not exceed 5 knots, or 2.5m/s. It is assumed that by choice of <ins class="diffchange diffchange-inline">geographic </ins>location, the type of current encountered can be kept down to a maximum of one knot, or 0.5m/s.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l12" >Line 12:</td>
<td colspan="2" class="diff-lineno">Line 12:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This displacement should correspond to 16 people. 0.5 knots is only hald the calculated maximum value, but it might be a good average. If 1 knot is desired continuously, that would imply a fourfold increase in fuel costs.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This displacement should correspond to 16 people. 0.5 knots is only hald the calculated maximum value, but it might be a good average. If 1 knot is desired continuously, that would imply a fourfold increase in fuel costs.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As far as currents alone are concerned, the expenses extrapolated from this data a high but bearable.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As far as currents alone are concerned, the expenses extrapolated from this data a high but bearable.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Engineering Data]]</ins></div></td></tr>
</table>Thebastidgehttps://wiki.seasteading.org/index.php?title=Current_Loads&diff=5431&oldid=prevJoep at 20:26, 16 October 20092009-10-16T20:26:16Z<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="en">
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 20:26, 16 October 2009</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4" >Line 4:</td>
<td colspan="2" class="diff-lineno">Line 4:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The drag on a body strongly depends on its shape. Unless the seastead design under consideration is essentially a boat, data from boats is not applicable. Here we will consider various blunt bodies, such as cylinders and spheres, which should provide a decent approximation for many seastead designs.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The drag on a body strongly depends on its shape. Unless the seastead design under consideration is essentially a boat, data from boats is not applicable. Here we will consider various blunt bodies, such as cylinders and spheres, which should provide a decent approximation for many seastead designs.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The overall scale of the design under consideration is another important factor. It influences both the drag forces, as well as the amount of people to split to fuel bill with. For instance: clubstead carries 200 passengers, in a 20.000st structure, which is a 100st per person. From a different perspective: 50lb/sqft of indoor space is used, where this is about 1/3 of total weight; the rest is structural and ballast. This figure depends on the type of design, but 100ton/person does match some estimates from other designs. For smaller seasteads the ratio is worse however; we will work with 200tons per person.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* The overall scale of the design under consideration is another important factor. It influences both the drag forces, as well as the amount of people to split to fuel bill with. For instance: clubstead carries 200 passengers, in a 20.000st structure, which is a 100st per person. From a different perspective: 50lb/sqft of indoor space is used, where this is about 1/3 of total weight; the rest is structural and ballast. This figure depends on the type of design, but 100ton/person does match some estimates from other designs. For smaller seasteads the ratio is worse however; we will work with 200tons per person.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* [[<del class="diffchange diffchange-inline">curents</del>]] generally do not exceed 5 knots, or 2.5m/s. It is assumed that by choice of geograpic location, the type of current encountered can be kept down to a maximum of one knot, or 0.5m/s.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* [[<ins class="diffchange diffchange-inline">Current|Currents</ins>]] generally do not exceed 5 knots, or 2.5m/s. It is assumed that by choice of geograpic location, the type of current encountered can be kept down to a maximum of one knot, or 0.5m/s.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
</table>Joephttps://wiki.seasteading.org/index.php?title=Current_Loads&diff=5420&oldid=prevEelco: New page: With regard to station-keeping of a seastead, it is important to know the magnitude of forces that a seastead may experience due to currents. This analysis depends on various assumptions....2009-10-15T21:21:00Z<p>New page: With regard to station-keeping of a seastead, it is important to know the magnitude of forces that a seastead may experience due to currents. This analysis depends on various assumptions....</p>
<p><b>New page</b></p><div>With regard to station-keeping of a seastead, it is important to know the magnitude of forces that a seastead may experience due to currents.<br />
<br />
This analysis depends on various assumptions. <br />
* The drag on a body strongly depends on its shape. Unless the seastead design under consideration is essentially a boat, data from boats is not applicable. Here we will consider various blunt bodies, such as cylinders and spheres, which should provide a decent approximation for many seastead designs.<br />
* The overall scale of the design under consideration is another important factor. It influences both the drag forces, as well as the amount of people to split to fuel bill with. For instance: clubstead carries 200 passengers, in a 20.000st structure, which is a 100st per person. From a different perspective: 50lb/sqft of indoor space is used, where this is about 1/3 of total weight; the rest is structural and ballast. This figure depends on the type of design, but 100ton/person does match some estimates from other designs. For smaller seasteads the ratio is worse however; we will work with 200tons per person.<br />
* [[curents]] generally do not exceed 5 knots, or 2.5m/s. It is assumed that by choice of geograpic location, the type of current encountered can be kept down to a maximum of one knot, or 0.5m/s.<br />
<br />
<br />
<br />
Existing datapoints:<br />
* [http://seagrant.mit.edu/news/press_releases.php?ID=54 This article] contains useful data. A 3250m<sup>3</sup> blunt object is dragged at an estimated speed of 0.5 knots, requiring 12.4HP or ~10kW of electricity input, or 36MJ/h. If said electricity was generated by a diesel generator, that would amount to 3L of diesel an hour at 1/3 efficiency, or two tons of diesel fuel a month.<br />
This displacement should correspond to 16 people. 0.5 knots is only hald the calculated maximum value, but it might be a good average. If 1 knot is desired continuously, that would imply a fourfold increase in fuel costs.<br />
As far as currents alone are concerned, the expenses extrapolated from this data a high but bearable.</div>Eelco