spray on heat shield

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wildbill1955

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<em>does anyone know of a way to do away with heat tiles and to use a spray insulation type heat shield? i'm sure there is someone or somebody that's does?</em> <div class="Discussion_UserSignature"> <p><em>willbill</em></p> </div>
 
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Boris_Badenov

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<p><span class="mw-headline"><font size="2">Thermal protection systems are what you are looking for.</font></span></p><p><span class="mw-headline"><font size="2">Space Shuttle thermal protection system</font></span></p><p><span class="mw-headline"><font size="2">http://en.wikipedia.org/wiki/Space_shuttle_thermal_protection_system</font></span></p><p><span class="mw-headline"><font size="2">Atmospheric reentry <span class="mw-headline">Thermal protection systems</span></font></span></p><p><span class="mw-headline"><font size="2"><span class="mw-headline">http://en.wikipedia.org/wiki/Atmospheric_reentry#Thermal_protection_systems</span></font></span></p><p><span class="mw-headline"><font size="2"><span class="mw-headline">http://www.space.com/businesstechnology/technology/armor_tps_020130-1.html</span></font></span></p><p><span class="mw-headline"><font size="2"><span class="mw-headline">http://www.space.com/businesstechnology/060927_orion_tps_technovelgy.html</span></font></span></p> <div class="Discussion_UserSignature"> <font color="#993300"><span class="body"><font size="2" color="#3366ff"><div align="center">. </div><div align="center">Never roll in the mud with a pig. You'll both get dirty & the pig likes it.</div></font></span></font> </div>
 
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scottb50

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Thermal protection systems are what you are looking for.Space Shuttle thermal protection systemhttp://en.wikipedia.org/wiki/Space_shuttle_thermal_protection_systemAtmospheric reentry Thermal protection systemshttp://en.wikipedia.org/wiki/Atmospheric_reentry#Thermal_protection_systemshttp://www.space.com/businesstechnology/technology/armor_tps_020130-1.htmlhttp://www.space.com/businesstechnology/060927_orion_tps_technovelgy.html <br /> Posted by boris1961</DIV></p><p>&nbsp;</p><p>I remember reading about a paste that can be used to coat a surface not too long ago.&nbsp;</p> <div class="Discussion_UserSignature"> </div>
 
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wildbill1955

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>does anyone know of a way to do away with heat tiles and to use a spray insulation type heat shield? i'm sure there is someone or somebody that's does? <br />Posted by wildbill1955</DIV><br /><br />thanks you guys for the info you been a big help. <div class="Discussion_UserSignature"> <p><em>willbill</em></p> </div>
 
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DrRocket

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>does anyone know of a way to do away with heat tiles and to use a spray insulation type heat shield? i'm sure there is someone or somebody that's does? <br />Posted by wildbill1955</DIV></p><p>The shuttle main tank uses a sprayed insulator.&nbsp; That is the material implicated in the Columbia disaster, since there a tendency for chunks to break off.&nbsp; I'm not sure of the current material used since it was revised some time ago.&nbsp; The original material used quite a bit of cork and the mix that was sprayed had a very high content of methylene chloride -- and that is one reason for the update. I think the nose cone of the Pegasus also uses a sprayable material.&nbsp;</p><p>The most common material used to insulate rockets is cork.&nbsp; Yep, a sheet of cork derived from a tree.&nbsp; It is an astonishly effective ablative material,&nbsp; A good insulator. A good ablator. Light. And cheap.&nbsp; I once was looking into a sprayable replacement for cork, to reduce costs.&nbsp; But with just a little work the manufacturing guys made the cost of applying cork sufficiently effective that I could not make the cost reduction goals with a sprayable even if I could do it for free.</p><p>The problem with those materials for the orbiter is that they work via ablation.&nbsp; Basically they char and burn up and carry away heat by losing material.&nbsp; That works well for a rocket that is exposed to high velocities in the atmosphere for only a matter of minutes.&nbsp; It would not work so well for a vehicle with much longer exposure to aeroheating.&nbsp; Re-use would add more complication, but could probably be handled.</p><p>The shuttle tiles are ceramic and very effective.&nbsp; There is a pre-ceramic resin that was recently tested for use in tile repair.&nbsp; It is more a troweled-on application than a spray-on application, but might be closer to what you have in mind.<br /></p> <div class="Discussion_UserSignature"> </div>
 
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