#### kolibri282

##### Active Member

comment:

João Morgado from the "Universidade da Beira Interior" in Covilhã, Portugal offers a propeller design software that is open source, comes with a nice graphical user interface and is fairly easy to use. Within about half a day I was able to define a prop (airfoil sections can be entered from xfoil) and run an analysis. I generated (a bit by guess and by golly) a 52x26 propeller with a Clark Y profile. Running it at 2900 rpm it generates 1380 N (310lb) of thrust at near zero airspeed and 600 N at 55mph. 310 lb is a value that corresponds quite well to the static thrust achieved in tests that were reported in the forum. 600 N is the thrust required which my simulation program calculates at 55 mph. The propeller absorbs a power of 42 kW (56 hp) at 0,5 m/s (static thrust)

You have to unra the rar files but I have no idea why there are 5 of them. Perhaps someone can report how they have gotten this to run. I did, but I have no idea what I did in the process...;-)

There is no example project in the bundle so I have attached my Bensen project below to get you started. There is no warranty whatsoever for the project, use at your own risk!

PS: for some reason it is currently (01/03/17; 07:20 UTC) not possible to add attachments. I'll try a bit later to add my example file

PPS: you can download the example and a screenshot from my magenta cloud storage https://www.magentacloud.de/lnk/bIRrGBCh

Password is jblade (all lower case)

I think that in this case we should post all comments to this thread. Please also post your own projects, especially when you created a high end propeller blade that gives good results.

Have fun!

https://sites.google.com/site/joaomorgado23/Home

João Morgado from the "Universidade da Beira Interior" in Covilhã, Portugal offers a propeller design software that is open source, comes with a nice graphical user interface and is fairly easy to use. Within about half a day I was able to define a prop (airfoil sections can be entered from xfoil) and run an analysis. I generated (a bit by guess and by golly) a 52x26 propeller with a Clark Y profile. Running it at 2900 rpm it generates 1380 N (310lb) of thrust at near zero airspeed and 600 N at 55mph. 310 lb is a value that corresponds quite well to the static thrust achieved in tests that were reported in the forum. 600 N is the thrust required which my simulation program calculates at 55 mph. The propeller absorbs a power of 42 kW (56 hp) at 0,5 m/s (static thrust)

You have to unra the rar files but I have no idea why there are 5 of them. Perhaps someone can report how they have gotten this to run. I did, but I have no idea what I did in the process...;-)

There is no example project in the bundle so I have attached my Bensen project below to get you started. There is no warranty whatsoever for the project, use at your own risk!

PS: for some reason it is currently (01/03/17; 07:20 UTC) not possible to add attachments. I'll try a bit later to add my example file

PPS: you can download the example and a screenshot from my magenta cloud storage https://www.magentacloud.de/lnk/bIRrGBCh

Password is jblade (all lower case)

I think that in this case we should post all comments to this thread. Please also post your own projects, especially when you created a high end propeller blade that gives good results.

Have fun!

https://sites.google.com/site/joaomorgado23/Home

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