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Page Title:
Roll and Pitch Attitude Accuracy (Synchro) |
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|  MIL-N-81497A(AS)
Roll and Pitch Attitude Accuracy (Synchro) - The
3.4.2.8
initial alignment output errors for each pitch and roll output synchro
shall not exceed the values listed in Table II.
System Interface - The equipment shall be compatible
3.4.3
with the following inupts and outputs from associated equipment and
operators.
Manual Inputs - The INS shall have the following
3.4.3.1
manual inputs as specified in 3.5.
Mode Selection
Power Initiation
Grid Slew
Back-up Latitude Control
Magnetic Variation Control
Submode Selection
Self Test Initiation
Latitude and Longitude Insertion and Update
Electrical Inputs -
3.4.3.2
Doppler Interface - The equipment shall accept
3.4.3.2.1
incremental Doppler velocity data inputs in pulse train format in
accordance with the following characteristics.
(1) Along Heading Velocity (VH) -
30 pulses per second
Scale factor:
(a)
(PPS)/knot
(b) Maximum Pulse Rate: 18,000 PPS at
600 knots
(c) This channel shall be one line representing
positive velocity.
(2) Across Heading Velocity (VD) -
Scale Factor: 85 PPS/knot
(a)
(b) Maximum Pulse Rate: 17,000 PPS
at 200 knots
This channel shall be two lines, one
(c)
representing a positive (rightward)
and the other a negative velocity.
17
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