SteveC68's blog archive for December, 2009 - RC Groups
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Archive for December, 2009
Posted by SteveC68 | Dec 18, 2009 @ 01:16 PM | 10,340 Views
Here is a simple Excel spreadsheet that calculates FSA of a ducted fan. I see people ask how to calculate FSA a lot. This spreadsheet will give you 100% FSA down to 70% FSA in 5% increments. Only input the diameters of the fan shroud and the fan hub (green cells). The fan hub diameter should be the largest diameter of the hub as some fans have a pointed tip.

I have updated this spreadsheet. It now also calculates exhaust diameter at different percentages of FSA from 100% down to 70% in 5% steps. This is done for both a single exhaust outlet and a bifurcated (two outlets from one fan) exhaust.

Somehow I deleted this spreadsheet a while back. Sorry about that.
Posted by SteveC68 | Dec 18, 2009 @ 10:52 AM | 6,324 Views
In response to all of the "yeah but they had to make the intake larger so it would fly better" and the "you wont even be able to see how ugly it looks when it's flying" people. I give you your new "Sabre".