http://groups.yahoo.com/group/ductfan/ Ducted Propulsors Tue, 09 Jun 2009 00:50:34 GMT Philip Carter http://groups.yahoo.com/group/ductfan/message/2500 http://groups.yahoo.com/group/ductfan/message/2500 Hello all, For those running DFDC (Ducted Fan Design Code), an updated version is available here: http://www.esotec.org/sw/DFDC.html This fixes a lot of bugs Tue, 17 Feb 2009 21:48:26 GMT esotec2025 http://groups.yahoo.com/group/ductfan/message/2497 http://groups.yahoo.com/group/ductfan/message/2497 Hello group, Those running DFDC v0.70 will have noticed that it is a tad buggy. I've posted an update at my website: Fri, 10 Oct 2008 17:08:55 GMT mel kosanchick http://groups.yahoo.com/group/ductfan/message/2496 http://groups.yahoo.com/group/ductfan/message/2496 Marc,   Thanks for your note. We'll forward information package later this year. Many of the critical research articles by Dennis Bushnell, Mark Moore, Andy Fri, 03 Oct 2008 01:39:11 GMT F. Marc de Piolenc http://groups.yahoo.com/group/ductfan/message/2495 http://groups.yahoo.com/group/ductfan/message/2495 Dear Mel, ... First of all, thank you for the praise. George and I are acutely aware of our limitations and of the limitations of our work, so a reminder that Thu, 02 Oct 2008 16:40:33 GMT mel kosanchick http://groups.yahoo.com/group/ductfan/message/2494 http://groups.yahoo.com/group/ductfan/message/2494 Marc,   My son, daughter and I have all purchased copies of your book. It is absolutely the best reference book on ducted fans that has ever been written.  Thu, 02 Oct 2008 06:17:23 GMT F. Marc de Piolenc http://groups.yahoo.com/group/ductfan/message/2493 http://groups.yahoo.com/group/ductfan/message/2493 The velocity through the fan plane has to increase to increase mass flow, which is why each incremental change has to be checked for excessive fan tip speed. Thu, 02 Oct 2008 02:18:01 GMT Michael Brown http://groups.yahoo.com/group/ductfan/message/2492 http://groups.yahoo.com/group/ductfan/message/2492 G'day Marc... I'm just running through the worked design example in your book and have come across a section that I don't understand. After calculating a Sat, 06 Sep 2008 04:12:58 GMT F. Marc de Piolenc http://groups.yahoo.com/group/ductfan/message/2491 http://groups.yahoo.com/group/ductfan/message/2491 Dear Philip, Thank you for this information. Ages ago I was pretty adept with FORTRAN and other structured languages; maybe this is the time to get back into Fri, 05 Sep 2008 15:17:56 GMT Philip Carter http://groups.yahoo.com/group/ductfan/message/2490 http://groups.yahoo.com/group/ductfan/message/2490 Marc: Drela and Youngren use the Intel Fortran compiler (ifort): http://www.intel.com/support/performancetools/fortran/linux/ There is a free non-commercial Fri, 05 Sep 2008 01:31:10 GMT markoid01 http://groups.yahoo.com/group/ductfan/message/2489 http://groups.yahoo.com/group/ductfan/message/2489 -DFDC! Yes interesting stuff! I wonder how closely a fan made using software comes to its design parameters. There has not been much discussion on the Martin Thu, 04 Sep 2008 07:28:05 GMT F. Marc de Piolenc http://groups.yahoo.com/group/ductfan/message/2488 http://groups.yahoo.com/group/ductfan/message/2488 Dear Philip, Thanks for posting this. As you say, something like this package has been needed for a very long time. I've only scanned the site and downloaded Wed, 03 Sep 2008 16:59:09 GMT Philip Carter http://groups.yahoo.com/group/ductfan/message/2487 http://groups.yahoo.com/group/ductfan/message/2487 In case this information hasn't appeared on this list (?) : Mark Drela and Harold Youngren (MIT, authors of XFOIL, XROTOR, MSES...) have open sourced a ducted Wed, 27 Aug 2008 23:03:01 GMT markoid01 http://groups.yahoo.com/group/ductfan/message/2486 http://groups.yahoo.com/group/ductfan/message/2486 Hi Issac Thats very cool, your friend did a great job. Id really like Martin to put out some notes on the prototypes. It would be really interesting to see how Tue, 26 Aug 2008 05:58:26 GMT isaacburrough http://groups.yahoo.com/group/ductfan/message/2485 http://groups.yahoo.com/group/ductfan/message/2485 Hi Everyone My flatmate actually did the conceptual styling of all of the cowlings and produced the computer generated images. The guy has been developing the Mon, 25 Aug 2008 22:48:53 GMT markoid01 http://groups.yahoo.com/group/ductfan/message/2484 http://groups.yahoo.com/group/ductfan/message/2484 Hi Guys, There is video of it on the web site.It fly's well and the web site shows it flying figure "8's", and other types of maneuvers. Another thing about