Tornado 3D Vortex Lattice Software

bmoslener · July 25, 2009, 01:27

I'm attempting to model a P-3 airplane using the Tornado MATLAB program. The program allows for NACA designations to define the airfoil shape. My information indicates the P-3 has a NACA 23011 for the horizontal stabilizer however it's inverted. Does anyone have any experience using Tornado with inverted airforils? Thanks in advance for any responses.

lucav79 · August 1, 2009, 05:37

Maybe I get it wrong. Can't you simply provide tornado with a simple txt file describing the inverted airfoil? I worked a lot with tornado a modified it to allow aeroelastic calculations so I know it very well....let me know if you cannot solve the issue. Luca

bmoslener · August 16, 2009, 01:31

Luca,
Thank you very much for your comment. Sorry for the late response...I've been away for a while. Unfortunately, I'm not familiar with how to insert a text file to describe the airfoil. The user manual says to edit the file 'slope.m' however I have not been able to locate this file. Any details you can provide would be greatly appreciated.

Thanks,
Brandt

Joukowski · September 14, 2009, 13:08

Hi , just take care that the tornado doest twist the airfoil about its c/4 .

bmoslener · September 19, 2009, 01:27

Hey thanks a lot. Stupid question but do I need to trim the aircraft (such that my moments are minimum) for my stability derivatives to be meaningful?

July 25, 2009, 01:27	Tornado 3D Vortex Lattice Software	#1
bmoslener New Member Brandt Moslener Join Date: Jul 2009 Posts: 3 Rep Power: 17	I'm attempting to model a P-3 airplane using the Tornado MATLAB program. The program allows for NACA designations to define the airfoil shape. My information indicates the P-3 has a NACA 23011 for the horizontal stabilizer however it's inverted. Does anyone have any experience using Tornado with inverted airforils? Thanks in advance for any responses.

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August 1, 2009, 05:37		#2
lucav79 New Member Luca Cavagna Join Date: Mar 2009 Location: Stockholm, Sweden Posts: 8 Rep Power: 17	Maybe I get it wrong. Can't you simply provide tornado with a simple txt file describing the inverted airfoil? I worked a lot with tornado a modified it to allow aeroelastic calculations so I know it very well....let me know if you cannot solve the issue. Luca

August 16, 2009, 01:31		#3
bmoslener New Member Brandt Moslener Join Date: Jul 2009 Posts: 3 Rep Power: 17	Luca, Thank you very much for your comment. Sorry for the late response...I've been away for a while. Unfortunately, I'm not familiar with how to insert a text file to describe the airfoil. The user manual says to edit the file 'slope.m' however I have not been able to locate this file. Any details you can provide would be greatly appreciated. Thanks, Brandt

September 14, 2009, 13:08		#4
Joukowski New Member Join Date: Aug 2009 Posts: 1 Rep Power: 0	Hi , just take care that the tornado doest twist the airfoil about its c/4 .

September 19, 2009, 01:27		#5
bmoslener New Member Brandt Moslener Join Date: Jul 2009 Posts: 3 Rep Power: 17	Hey thanks a lot. Stupid question but do I need to trim the aircraft (such that my moments are minimum) for my stability derivatives to be meaningful?