Page:Aerial Flight - Volume 1 - Aerodynamics - Frederick Lanchester - 1906.djvu/282

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AERODYNAMICS.

columns; both Tables IV. and V. being values of appropriate to least gliding angle, that is, for minimum.


Table V.

Values of (continued).

.025 .020 .015 .010
3
4
5
6
7
8

10

12
.210 = 12.0°
.219 = 12.5°
.226 = 12.9°
.230 = 13.2°
.236 = 13.5°
.244 = 14:0°

.256 = 14.7°

.268 = 15.3°
.189 = 10.8°
.196 = 11.2°
.202 = 11.6°
.206 = 11.8°
.212 = 12:15°
.218 = 12:5°

.228 = 13:0°

.239 = 13.7°
.163 = 9.3°
.169 = 9.7°
.174 = 10.0°
.178 = 10.2°
.183 = 10:5°
.189 = 10.8°

.198 = 11:3°

.207 = 11.8°
.133 = 7.6°
.138 = 7.9°
.142 = 8.1°
.145 = 8:3°
.149 = 8:5°
.154 = 8.8°

.161 = 9:2

.169 = 9.7°


Table VI.

Least Gliding Angle () (Theoretical).

Minimum value of or

.030 .025 .020 .015 .010
3
4
5
6
7
8

10

12
6.85°
6.32°
5.8°
5.5°
5.2°
4.8°

4.5°

4.2°
1:8.3
1:9
1:10
1:10.4
1:11
1:12

1:12.8

1:13.7
6.25°
5.75°
5.3°
5.0°
4.7°
4.5°

4.1°

3.8°
1:9.2
1:10
1:10.8
1:11.5
1:12.2
1:12.8

1:14

1:15
5.6°
5.15°
4.75°
4.5°
4.25°
4.0°

3.65°

3.42°
1:10.2
1:11.1
1:12
1:12.8
1:13.5
1:14.4

1:15.8

1:16.8
4.8°
4.4°
4.1°
3.9°
3.6°
3.4°

3.2°

3.0°
1:12
1:13
1:14
1:14.7
1:15.9
1:16-8

1:17.9

1:19
3.95°
3.65°
3.40°
3.20°
3.00°
2.80°

2.60°

2.40°
1:14.5
1:15.7
1:16.8
1:17.9
1:19.1
1:20.5

1:22

1:23.9


Table VI. gives the theoretical values of corresponding to the ascertained values of , that is to say, this Table represents the theoretical minimum gliding angle for the values of employed.

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