Dillon Arms

The tractability condition

 
 

Abbreviations

 
f
 Tractability factor
fl
 Low limit tractability factor; fl 5.7
sg
 Gyroscopic stability factor
dp
 Yaw of repose vector
 

More abbreviations

Explanation

The tractability factor f characterizes the ability of the projectile's longitudinal axis to follow the bending trajectory (see figure Go to figure). The quantity f can simply be defined as the inverse of the yaw of repose. It can be shown that the tractability factor f is proportional to the inverse of the gyroscopic stability factor.

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