MIL-G-85742/4(AS)
3.2 Characteristics. Performance characteristics of the BG/NG
shall be as specified herein.
3.2.1 Rate gyro drive voltage. The rate gyro drive voltage shall be 9.0
±0.3 volts root-mean-square at a frequency of 1200325 hertz (Hz).
3.2.2 Roll angle drift. The roll angle voltage at the output of the
integrator shall drift not more than 15 millivolts (mV) (approximately 1
degree (deg)) in 10 seconds.
3.2.3 Roll angle accuracy. When rotating the assembly about its long-
tudinal axis at a rate of 60 degrees per second (deg/s), the cumulative
angle error after 30 seconds shall be less than 1 percent.
3.2.4 G-Bias output voltages. The G-Bias output voltages shall vary as
the unit rolls from its launch position. The output shall conform to
Figure 1 for 0 deg initialization, Figure 2 for +90 deg initialization, and
Figure 3 for -90 deg initialization. These requirements shall be met for
roll rates up to 200 deg/s.
3.2.5 Torque steering data delay. Upon enablement, the G3/NG assembly
shall provide a 2.1 ± 0.1 second delay prior to incorporating seeker-
steering data into the Magamp Input.
3.2.6 Navigation gain function. The normalized magnitude of the
steering data at the Magamp In outputs shall vary in accordance with
Figure 4.
4.
QUALITY ASSURANCE PROVISIONS
4.1 General. Each GB/NG assembly shall
meet the requirements of 3.2
when inspected and tested as specified in
accordance with Drawing
1466AS1324 and the following paragraphs.
Failure to meet any of the
requirements shall be cause for rejection
of the GB/NG assembly.
4.1.1 Test environment. Unless otherwise specified, all tests and
inspections shall be conducted under the following environmental con-
ditions.
Temperature (ambient): 23 ±5 degrees Celsius.
a.
Elevation of test facility.
Altitude:
b.
95 percent or less.
Relative humidity:
c.
4.1.2 Test equipment accuracy. Unless otherwise specified, test equip-
ment accuracy shall be as specified in MIL-G-85742.
2
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