Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
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Old Feb 01, 2013, 11:42 PM
SaundazDiGovt is offline
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Mini-HowTo

How to determine the coefficient of drag/lift?


Hey guys im new to the forum, however i have been studying rc jets and they operate for the last 2 years. My question is How is the coefficient of drag/lift found without practical assessment, I.e. wind tunnel experiments etc.
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Old Feb 02, 2013, 02:05 PM
Roto Rob is offline
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Lots of math, or a few estimations based on previous experience. Hard to get it exact without actual in flight measurements, or computer simulation.

students.sae.org/competitions/aerodesign/rules/aero_nicolai.doc
Old Feb 07, 2013, 10:38 PM
LuvEvolution7 is offline
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there are programs that will do it for you, if you know some of the parameters. there's a new one on the EDF forum by a member that seems to be very good. I haven't spent much time figuring it out, but it looks easy to use.
Old Feb 14, 2013, 11:56 AM
SaundazDiGovt is offline
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Alright thanks guys.
Old Feb 16, 2013, 10:42 PM
c131frdave is offline
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Too many numbers
I use Solidworks. It does a great job IF you remember to use the correct Reynold's number.


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