34 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



Apparatus and Model, Incidence of Wing, 6° 



Velocity 30 24 



t 20 24 



fx 00870 . 00725 



fiQ 00160 .00156 



[Xw 0002 . 0002 



/xm (net) 00690 -00550 



VOL. 62 



/<?c? 



-?^ 



S'a 



/o 



-\ 60 



V 



\) 



\ 





^0 



/o 







\ 



t?oo/P 



Fig. 13. — Curves for |x (net) and ^w for oscillations in pitch. 



