support dead reckoning of articulated parts
From IEEE 1278.1-1995:
A.2.1.6 Dead reckoning of articulated parts¶
The issuing simulation application may specify the dead reckoning of an articulated part by including position, extension, x, y, z, azimuth, elevation, and/or rotation rate type metrics in an Articulation Parameter record of an Entity State PDU (see 220.127.116.11). The same dead reckoning thresholds (see 18.104.22.168.2) that apply to an entity apply to its articulated parts. Note that angular movement of an articulated part may result in a linear threshold being exceeded. Absolute linear error for each articulated part in a chain of connected parts shall be used to determine if a threshold has been exceeded.