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Components Assembly Torque
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Rocket, 2.75 Inch, Complete Round: Assembling, Packing and Testing
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Horizontal Range



img
MIL-R-50263A (PA)
3.4.2 Parts Security .-The round shall not lose parts or
exhibit disassembly of components.
3.4.3 Premature Detonation. -The round shall not prematurely
detonate.
3.4.4 Time to First Motion. -The maximum time interval
from the instant of applying the firing current to the igniter
to the time the motor thrust overcomes the 200 lb. nominal re-
straint and the rocket commences to move shall be as follows:
Temperature C
Max. First Motion Time (Sec.)
-54
.075
-32
.075
+46
.028
+63
.028
+66
.023
3.4.5 Lateral Deflection. -The lateral deflection of each
sample round fired shall be measured at point of warhead impact
or functioning.  Lateral deflection is the angle the rocket-
trajectory forms with the firing azimuth along a horizontal
plane.  It is measured in roils with left deflection reported
as minus (-) and right deflection reported as plus (+).  The
lot sample standard deviation shall not exceed thirty (30) mils
at each temperature.
3.4.6 Rocket Motor Burnout Parameters. -Each sample round
shall accelerate such that the true velocity and time (from time
of ignition, To) when rocket motor burnout occurs shall be
within the following limits:
Velocity (M/Sec)
Time (Sec)
Whd.
Lower
Upper
Lower
Upper
Limit
Limit
Limit
Limit
-54 C
536
1.570
M156
1.910
677
536
M151
1.570
1.910
677
536
XM23O
1.910
1.570
677
XM232
536
1.910
1.570
677
WDU-4A/A
536
1.570
1.910
677
447
M229
1.980
1.698
426
XM24 3
426
447
1.980
1.698
M247
1.910
1.570
536
677
WTU-1/B
536
1.570
1.910
677
6

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