Fan drum arrangement mode

The lowest weed speed isoline

Fitting curves

Correlation coefficient $R^2$

Single fan drum

0.15 m/s

$y=0.0009x^3-0.0811x^2+2.5332x+10.004$

0.9869

0.25 m/s

$y=0.0011x^3-0.0983x^2+2.9786x+1.1508$

0.9693

Parallel double fan drums

0.15 m/s

$y=0.0014x^3-0.135x^2+4.3948x+2.7193$

0.9943

0.25 m/s

$y=-0.0002x^3-0.0241x^2+2.2148x+7.5535$

0.953

Double fan drums coplanar

0.15 m/s

$y=0.0018x^3-0.1504x^2+4.543x+3.8194$

0.9767

0.25 m/s

$y=0.0005x^3-0.0732x^2+3.266x+0.8003$

0.9837