Velocity, internal ballistics and external ballistics...

Details Velocity, internal ballistics and external ballistics... Velocity, internal ballistics and external ballistics...

2011-04-19

2011-04-19

Johnson, Stephen M (Department: 3641)

Ordnance

Mounts

Training mechanisms

C089S041160, C124S073000

Reexamination Certificate

active

07926408

ABSTRACT:
Improvements to projectile devices (particularly air guns) include techniques for measuring and controlling the velocity of projectiles in the barrel and after leaving the barrel, allowing the use of non-toxic projectiles. Tracking of a projectile's flight by its unique sound and/or its unique electromagnetic signal or signal modulation are also provided, along with after-barrel guidance that can be used to improve accuracy. Control for discriminating between authorized and unauthorized users is also provided. A projectile device can also be used for inexpensive and harmless practice using optical and/or acoustic information gathered by targeting and imaging systems built into the device.

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