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Page Title:
Gyroscoope Assembly Environmental Limitations |
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|  MIL-N-81497A(A5)
Use of Trim Potentiometers - The use of trim
3.5.4.7
potentiometers shall be held to a minimum to reduce weight and improve
reliability. Use of the Computer, Navigation and Indicator, Position
shall be made for the purpose of insertion of factory or depot
caiibration data. The Gyroscope Assembly shall provide an identification
number as an output signal to the Computer, Navigation. Circuitry
and computer program shall be used to verify thawt proper data is in-
serted into the Computer, Navigation.
Electrical Connectors - The electrical connectors
3.5.4.8
shall be:
Function
Type
Designation
Cable to Aircraft
M81511/01E16-55P1
lJ1
Cable to Aircraft
M81511/01E16-55P2
1J2
Cable to Power Supply
M81511/01E16-55P3
1J3
Cooling - The Gyroscope Assembly shall receive
3.5.4.9
forced cooling air with flow rate of 15 cubic FT/MIN with temperature
between -54 and +55 DEG C from the Rack, Electrical Equipment.
Color - The Gyroscope Assembly shall be lusterless
3.5.4.10
gray No. 36231 as specified in FED-STD-595.
Gyroscoope Assembly Environmental Limitations - The
3.5.4.11
Gyroscope Assembly shall operate within accuracies consistent with
the requirements of 3.4.2 for ambients between -54 and +46 DEG C. De-
graded performance shall be permitted for ambient temperatures between
+46 to +55 DEG C. Performance of 6 NM/HR shall be permitted for
vibration inputs in excess of 2.5G for the frequency range of 30 to 70
Hz and 14 NM/HR for vibration inputs in excess of 5G for the frequency
range of 200 to 500 Hz shall be permitted.
Gyroscope Assembly Mounting - Gyroscope Assembly
3.5.4.12
mounting shall be mounted on to the Rack, Electridcal Equipment as specified
in EI-554.
Gyroscope Assembly Interface - Major Gyroscope
3.5.4.13
Assembly interfaces shall be in accordance with the following require-
ments.
Control Signals - The Gyroscope Assembly shall
3.5.4.13.1
recieve all mode, submode and sequence control signals from the Com-
puter , Navigation in the form of 4V DC control signals.
Incremental Velocity Signals - The Gyroscope
3.5.4.13.2
Assembly shall provide incremental velocity signals, Ć VX and Ć VY in
the form of separate plus and minus pulse trains for each velocity
Interface characteristics shall be in accordance with
coordinate .
3.5.5.12.3(1).
41
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