migration;
lifting line theory;
power curve;
POWER CURVES;
SPEEDS;
PIGEON;
D O I:
10.1088/0143-0807/35/3/035016
中图分类号:
G40 [教育学];
学科分类号:
040101 ;
120403 ;
摘要:
The extremely long migration flights of some birds are carried out in one hop, necessitating a substantial prior build-up of fat fuel. We summarize the basic elements of bird flight physics with a simple model, and show how the fat reserves influence flight distance, flight speed and the power expended by the bird during flight.