Journal Royal Society, N.S.W., 1887. Plate 28. Part III. 



^ 



EXPERIMENTAL MODEL OF A FLYING MACHINE. 



Total weight of the 



model 











ounces 



Weight of 48 vulcanised india-rubber bands - 









Area of the body p 









1914 





Area of the wings 





















2130 





Length of the three 



steps of the wine 





8, 9 anc 



lO inches. 















Connecting Rods 









5.23 





Extreme length of 











Spread of the wings .. 







6 feat 





Each wing flaps In 



an arc of 107° 20 











There are 470 f 



5 to "the^all by w 



rgy stored 



& 



on the w 



1 when th 



The model has 



lown 270 feet horizontally ir 



a dead calrr 





Sydney, N.S.W. 







LAWRENCE 



HARGRAVE 



