Re: Analysis of the new F1D rules

From: <ykleetx_at_gmail.com>
Date: 16 Apr 2014 13:04:19 -0700

I promised to provide further analysis on the following:

 2a. keeps the overall flight weight the same as before, at 1.8 g. This means that the model would fly at the same speed, have the same sink rate, and experience the same aerodynamic loads. In addition, the 2/3 reduction in motor weight would translate almost directly into a 1/3 reduction in flight times.
 2b. would decrease the overall flight weight to 1.6g. This means that the model would fly at a slower speed, have lower sink rate, and experience less aerodynamic loads. This is a higher performing model than before. The overall flight time would be reduced, but not by less than 1/3. (I will provide the prediction in a follow up post.)
 2a. Same size prop, rubber cross section, flight time reduction would be 33.3%. In the Mine, this would be a 18.3" prop.
 

 2b. I estimate that a larger prop would be used with a thinner cross section. In the Mine, this would be a 19.2" prop. Flight time reduction would be 16.5%.
 

 These are based on my possibly flawed estimates that are based on a possibly flawed simulation. I think they are in the ball park, though.
 


Received on Wed Apr 16 2014 - 13:04:19 CEST