SOARING MACHINES. 



221 



out of the tube. The head resistance is thus reduced to that of 

 the edge of the plate plus the end area of the tube. 



Fig. 11. 



Fig. 12. 



Kite has the weather cock attached to the after end of the 

 tube, and is the kite previously mentioned, now remade. 



Kite P has the upper side quite flat, the hook is 3" abaft the 

 sharp leading edge of the propeller. The space between the hook 

 and the leading edge of the propeller is solid wood slightly concave, 

 so that there can be no dead air to windward of the hook. 



