Mongoose98XL remains

5 responses to “Mongoose98XL remains”

1. 

   jurvetson

   Oct 17, 2011 at 3:06 am

   A Rapid Unscheduled Disassembly… back to the original parts!

   

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2. 

   jurvetson

   Oct 18, 2011 at 3:02 am

   [edit: the user I was talking with seems to have been deleted, so the dialog looks a bit odd] Yes and yes…. carbon fiber & kitties.

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3. 

   jurvetson

   Oct 18, 2011 at 3:16 pm

   SD card went missing, but a new one cost $2.99 on Amazon. I’ll need a new nose cone, but I have a few 4" ones already, and I’d like to test a long sharp conical one for its supersonic efficiency.

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4. 

   jurvetson

   Oct 19, 2011 at 2:46 am

   interesting… It has a cool chart, where 1 is best and 4 is worst:

   

   I was flying Von Kármán which I vaguely knew as the best for supersonic flight, but a friend flew a conical nose atop the same rocket and went higher on the same motor. And all of the rockets that I have seen break 100K ft. had tall-aspect-ratio conical cones. So I am a bit perplexed and wonder what the weighted-average speed and altitude effects might be for vertical optimization…

   Wikipedia notes that the chart "goes against the often-repeated conventional wisdom that a conical nose is optimum for "Mach-breaking", but I have seen conventional wisdom prevail above 30K ft.

   On GPS, there’s a recent discussion here. I have not had a problem with GPS… yet… gotta break 60K first.

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5. 

   jurvetson

   Oct 19, 2011 at 4:40 am

   Ah, transonic flight – good for Von Karman: primer

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