42 



EXPERIMENTS TN AERODYNAMICS. 



Table X.— August 23, 1889. 

 Barometer, 732.3 mm. ; mean temperature, 22°. 8 C. ; wind, light. 



Dimensions and aspect of 

 planes. 



15 ♦ 



=3^ 



15 X 4 inches (38.1 x 10.2 



cm.). 

 Double pair of planes, 6 



inches apart. 

 Total weight, 942 grammes. 



tc 



> 



o.o 



o 



to 

 a 

 < 



Same planes, 4 inches apart. 



A 

 B 

 A 

 B 

 A 

 B 

 A 

 B 

 A 

 A 

 B 

 B 

 B 

 B 

 A 

 A 

 A 

 A 

 B 

 B 

 B 

 B 

 A 

 A 

 A 

 A 

 B 



A 

 B 

 A 

 B 

 B 

 B 

 A 

 A 

 A 

 A 

 B 

 B 

 A 

 A 

 B 



+ 



+ 



+ 

 + 



0° 































5 



5 



5 



5 



.5 



.5 



5 



5 



7 



7 



7 



7 



7 



7 



— 7 



— 7 

 + 10 



10 

 10 



> 



o o 

 a; "-+3 



+ 



+ 

 + 



7.80 

 9.30 

 9.10 

 8.4.5 

 4.80 

 4.80 

 4.85 

 5:00 

 4.95 



10.05 

 9.,35 

 4.70 

 4.75 

 9.00 

 8.10 

 4.75 

 4.85 

 8.20 

 9.35 

 4.70 

 4.70 

 9.10 

 9.50 

 4.75 

 4.65 

 7.90 



10.25 



11. .55 



8.60 

 4.60 

 4.70 



10.10 

 4.70 

 4.70 



10.20 

 7.65 

 4.70 

 4.80 



10.50 



13.70 

 4.85 

 4.S7 



c S S 



fc. .IT' a 



o -t; to 



7.9 



6.6 



6.8 



7.3 



12.8 



12.8 



12.7 



12.3 



12.4 



6.1 



6.6 



18.1 



13.0 



6.8 



7.6 



13.0 



12.7 



7.5 



6.6 



13.1 



13.1 



6.8 



6.5 



13.0 



13.3 



7.8 



6.0 



5.3 



7.2 



13.4 



13.1 



6.1 



1.3.1 



13.1 



6.0 



8.1 



13.1 



12.8 



5.9 



4.5 



12.7 



12.7 



o 



0.80 

 0.70 

 0.70 

 0.65 

 1.08 

 1.02 

 0.90 

 1.20 

 I..55 

 0.70 

 0.60 

 0.64 

 2.10 

 0.78 

 0.69 

 0.70 

 11.15 

 0.90 

 0.62 

 0.58 

 7.25 

 0.80 

 O.GO 

 0.57 



1.10 

 0.75 



0.62 

 0.60 

 0.95 

 0.89 

 0.69 

 2.30 

 0.70 

 0.65 

 0.63 

 2.90 

 0.59 

 0.59 

 O..59 

 3.07 

 0.58 



Remarks. 



Soars. 



