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Page Title:
Ballistic Test (See 4.4.3.1) - Continued |
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| MIL-R-50263A(PA)
4.5.5.5 The wind velocity (meters\second) and direction
(azimuth) at the launcher shall be recorded for each sample
round fired.
4.5.5.6 A data acquisition and reduction system shall
be utilized that is capable of accurately monitoring the pre-
launch, launch, flight and impact (and/or detonation); record
the acquired data and be capable of rapid semi-automatic re-
duction of pertinent data to permit quality assessment of
sample rounds by measurement of round parameters.
4.5.5.6.1 A microwave unit radar shall be utilized for
data acquisition. The radar's antennae pedestal shall be per-
manently located to permit microwave line-of-sight tracking
from launch to impact (and/or detonation). The horizontal
distance from launcher to antennae pedestal shall be forty (40)
meters.
4.5.5.6.2 The radar instrumentation (and data reduction)
building shall be located not further than 25 meters from the
antennae pedestal. The blockhouse area shall be adequately
bunkered to provide instrumentation personnel protection from
possible malfunctioning rounds.
4.5.5.6.3 To assure proper calibration of the microwave
system, a calibration station will be required. It shall be
positioned approximately 170 meters from the antennae pedestal.
4.5.5.6.4 To provide accurate near-launch flight data
and lock-on signal for automatic data processor (as specified
in 4.5.5.6.6) an infra-red sensor (IR) shall be positioned a
horizontal distance of 7.48 meters (measured from the rear of
the launcher to the center of the IR) down range on the line
of fire. The pulse (or signal) generated by the sensor shall
be permanently recorded as specified in 4.5.5.6.6.
4.5.5.6.5 The monitored data shall be permanently recorded
on magnetic tape (1.5 mil base instrumentation quality) at 152
centimeters per-second (152 cps) utilizing a tape transport
with sufficient channels. The transport shall be of instru-
mentation quality with servo speed control, provision for use
of recorded reference signal to compensate for changes in tape
speed during recording, direct record frequency response of
300 KHZ @152 cps.
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