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Стр. 1003
Formation Flight of Birds an Phila . Herpetol . Soc . 9 , 11 ( 1961 ) ; Calif . Agric . 15 , 8 ( 1961 ) ; Angew . Parasitol . 8 , 210 ( 1967 ) ; J. H. Camin , G. K , Clarke , L. H. Goodson , H. R. Shuyler , Zoologica 49 , 65 ( 1964 ) .
Formation Flight of Birds an Phila . Herpetol . Soc . 9 , 11 ( 1961 ) ; Calif . Agric . 15 , 8 ( 1961 ) ; Angew . Parasitol . 8 , 210 ( 1967 ) ; J. H. Camin , G. K , Clarke , L. H. Goodson , H. R. Shuyler , Zoologica 49 , 65 ( 1964 ) .
Стр. 1004
Thus , for maximum drag savings because they this occurs for elliptical loading — that a formation of 25 birds in tip - to - tip are flying in an upwash field caused is , when the wing lift varies elliptically formation , e = 2.9 ...
Thus , for maximum drag savings because they this occurs for elliptical loading — that a formation of 25 birds in tip - to - tip are flying in an upwash field caused is , when the wing lift varies elliptically formation , e = 2.9 ...
Стр. 1005
In other words , formation , from which actual spacing , one must always have a vee apex , but vee angle , speed , and flapping frethe legs can be different lengths . quency could be established . It is interesting that optimal formaP.
In other words , formation , from which actual spacing , one must always have a vee apex , but vee angle , speed , and flapping frethe legs can be different lengths . quency could be established . It is interesting that optimal formaP.
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