THE AERODYNAMICS OF A SPINNING SHELL. 
371 
Table V.—General Table of Results. 
Column 1. 
5 J 
5 . 
6 . 
7 . 
8 . 
Number of round. 
Muzzle velocity, f.s., for round, or mean for group. 
Air density p, lb./(ft.) 3 and temperature F. 
<p' = \0, degrees/sec. 
Upper entry—Calculated value for round, or mean for group. 
Lower entry—Observed value.* 
Period T, between successive minima of S, in units of 10 -3 sec. 
Maxima of yaw, (t) degrees. 
Mean values of QT, radians, for each round, for mean velocity as stated. 
Minimal of yaw, /3 t ( t ) degrees. 
* When there is only one entry there was no detectable difference between the observed and calculated 
values of <£. 
t Note .—The sign given is the sign of /3 1 ( t) at the minimum, see § 4.0. The yaw 8 is always positive. 
Gun rilled 1 turn in 40 calibres. 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
1 
ype I. 
I. 11 
0-0792 
2108 
252 
2-1 
19-10 
o-o 
918 
43° 
267 
2-5 
905 
— 
— 
2-11 
I. 12 
0-0792 
2108 
276 
6-1 
19-79 
-0-4 
918 
43° 
262 
6-9 
905 
-0-6 
— 
7*5 + 
' I. 14 
0-0807 
2113 
296 
7-2 
21-60 
-0-9 
920 
42° 
289 
6-4 
905 
-1-5 1 
I. 13 
0-0807 
2139 
234 
1-5 
18-44 
- 1-0 
931 
42° 
260 
31 
919 
- 2-4 ? 
— 
5-5 + 
I. 5 
0-0782 
3595 
230 
12-2 
28-87 
-0-9 
1565 
45° 
— 
8-5 
1539 
I. 6 
0-0782 
3595 
227 
13-7 
28-49 
o-o 
1565 
45° 
— 
9-5 
1540 
