NO. 4 WIND TUNNEL EXPERIMENTS IN AERODYNAMICS 



51 



TWITCH ine l^of^e:sf-r [otouf e.o) - ^x'x-' — V^ A\. 'Y") 



IVtrc :- flit. Fonces oh novci. /m£ rM povf^j>s , t^r 30M-r^/h- 



Fig. 14. 



