|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 7. Mean inertial work (A) and inertial power (B) associated with wing
acceleration during upstroke and downstroke plotted versus flight
speed. Note that while inertial work in upstroke is less than in downstroke at
all speeds, this is not the case for inertial power. The reduced duration of
upstroke at slower flight speeds increases the upstroke inertial power to the
point where it is nearly equal to the downstroke power. As we found previously
in cockatiels (Hedrick et al.,
2003), changes in wingbeat duration were entirely due to changes
in upstroke duration, as downstroke duration did not vary.
|
