Wind tunnel for arrows
The basic design was made in spring 2005
For more info: bertil@mvvf.net
Arrow ACE 525 (with 5 spinwing) m=0,019
kg
Wind speed 60M/s
Arrow rotation 125 r/s
Drag force F (28-9)x9,81/1000=186N
Arrow speed loss a in m/s/s
a=F/m a=0,186/0,019=9,8 m/s/s
If this arrow is shot with an initial velocity of 60
m/s,
it will be slowed down to 50 m/s after 1 s and 55 m.
The target is at the same level, and the calculations are
simplified, (the drag is supposed to be independent of
velocity from 60 to 50 m/s and the drag effect of fish-
tailing is ignored).