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Alt. Axis Housing
 
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VTAS Roll Pitch Helmet Fixture

 

Designed for the Armstrong Laboratory, Wright Patterson Air Force Base, this Visual Target Acquisition System (VTAS) fixture provides two coincident axes of helmet rotation about a simulated tragion (top of the spinal column).

 
Roll Pitch Helmet Fixture: Photo 1
 

Three-point kinematic couples employed in this device have given arc-minute pitch-and-roll data, free of play or hysteresis, for over 20 years.

 
Roll Pitch Helmet Fixture: Photo 2
 
Roll Pitch Helmet Fixture: Photo 3
 
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