Narrow Results

The lift and power requirements of a model dragonfly in forward flight are studied, using the method of numerically solving the Navier-Stokes equations. The graph of power against flight speed is U-shaped, suggesting that a dragonfly might have a preferred cruising speed. Considerable variation in the relative phase between fore- and hindwings results in only very small change in power requirement. This suggests theat the forewing-hingwing interaction is weak and furthermore, might explain why phase angles ranging from to are employed by dragonflies in hovering and forward flight.

This paper first introduces the development tendency and the basic characteristics of the Embedded Micro-Browser in the embedded system field, according to the present technical approaches, one kind of method which constructs the Embedded Micro-Browser (DragonFly) based-on the Linux operating system is proposed and realized, then produces the entire system modular structure and the design method. At last, it is verified that the DragonFly is one of very good software system.