Jules Verne - Future

[MeteorWayne]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I correspond with Dr Jenniskens, maybe I can get a full video <br />Posted by MeteorWayne</DIV><br /><br />Video is up here at SDC.</p><p>http://www.space.com/common/media/video.php?videoRef=SP_080930_atv_reentry</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[newtons_laws]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Video is up here at SDC.http://www.space.com/common/media/video.php?videoRef=SP_080930_atv_reentry <br />Posted by MeteorWayne</DIV></p><p>&nbsp;</p><p>Beautiful display!.&nbsp; Do you think the bright flash early on could be due to unused fuel?<br /></p> <div class="Discussion_UserSignature"> </div>

 

[shuttle_guy]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;Beautiful display!.&nbsp; Do you think the bright flash early on could be due to unused fuel? <br />Posted by newtons_laws</DIV></p><p>&nbsp;</p><p>I think that is a good quess.<br /></p> <div class="Discussion_UserSignature"> </div>

 

[MeteorWayne]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;I think that is a good quess. <br />Posted by shuttle_guy</DIV><br /><br />propellant, not fuel <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-laughing.gif" border="0" alt="Laughing" title="Laughing" /></p><p>Neither fuel nor oxidizer would burn without the other....</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[newtons_laws]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>propellant, not fuel Neither fuel nor oxidizer would burn without the other.... <br />Posted by MeteorWayne</DIV></p><p>&nbsp;</p><p>OK, propellant! <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-laughing.gif" border="0" alt="Laughing" title="Laughing" /></p><p>Although for the sake of argument, since the ATV was in the upper atmosphere by then, and bearing in mind the high localised temperatures, some fuel might react with the atmosphere alone? <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-tongue-out.gif" border="0" alt="Tongue out" title="Tongue out" /></p> <div class="Discussion_UserSignature"> </div>

 

[aphh]

<p>She sure was a great ship.</p><p>Does anybody know if it is theoretically possible to aero-brake gradually from orbit, so that the stresses of landing would not be extreme? </p><p>I'm thinking it's not possible, because lowering the orbit actually increases velocity. On the other hand, any powered braking would mean steeper entry angle, and thus increased stress loads.</p><p>Blunt end first (with a heatshield) seems to be the only relatively safe method.&nbsp;</p>

 

[aphh]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;OK, propellant! Although for the sake of argument, since the ATV was in the upper atmosphere by then, and bearing in mind the high localised temperatures, some fuel might react with the atmosphere alone? <br /> Posted by newtons_laws</DIV></p><p>Here is the video with more lead-in before the spectacular explosion (but unfortunately not in higher resolution):<br />http://www.esa.int/SPECIALS/ATV/index.html </p>

 

[MeteorWayne]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>&nbsp;OK, propellant! Although for the sake of argument, since the ATV was in the upper atmosphere by then, and bearing in mind the high localised temperatures, some fuel might react with the atmosphere alone? <br />Posted by newtons_laws</DIV><br /><br />I was just bustin' shuttle guy's chops with the propellant thing </p><p>That depends on how high it was when it broke up. I haven't seen that information yet. I suspect the breakup was too high for there to be sufficient oxygen for combustion, but certainly don't know that for sure until a more detailed analysis is released.</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>

 

[shuttle_guy]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>propellant, not fuel Neither fuel nor oxidizer would burn without the other.... <br />Posted by MeteorWayne</DIV></p><p>The Prop would have heated up rapidly during the entry, I expect that tank would over pressurize faster than the relief/burst disc could vert the pressure. The bursting tank would have caused the "flash". <br /></p> <div class="Discussion_UserSignature"> </div>

 

[MeteorWayne]

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Video is up here at SDC.http://www.space.com/common/media/video.php?videoRef=SP_080930_atv_reentry <br />Posted by MeteorWayne</DIV><br /><br />ESA alos has a different angle on their front page:</p><p>http://www.esa.int/esaCP/index.html</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>