Volume 1
MIL-HDBK-162A
Section 3
15 December 1965
ITEM NAME: SHIPS MOTION RECORDING SET
TYPE: AN SPN-10(XN-1)
10, 20 or 40 ft (after double integration
RELATION TO SIMILAR EQUIPMENT
Angular Displacements
None.
Roll: 5v equals 10 deg
TECHNICAL DESCRIPTION
Pitch: 5v equals 3 deg or 10 deg
Power Requirements
Yaw: 5v equals 10 deg or 360 deg
Main Sensing & Computing Units (Racks
Angular Rates
1, 2 and Stabilized Accelerometer):
Roll Rate: 5v equals 0.1 radius per
100 to 125v, 60 plus or minus 6 cps,
sec
800 va; 100 to 125v, 400 plus or
Pitch Rate: 5v equals 0.1 radius per
minus 20 cps, 27 va
sec
Recording and Playback Equipment (Racks
Magnetic Tape Recorder
3, 4, 5 and Magnetic Tape Recorder):
Tape Speed: 15 and 7.5 cps
100 to 125v, 60 plus or minus 6 cps,
Frequency Response: At 15 in., plus or mi-
1250 va.
nus 2 db, 50 to 15, 000 cps; at 7.5 in.
Each Remote Linear Acceleration Trans-
plus or minus 2 db, 50 to 7500 cps.
ducer (With Stabiline Voltage Regulator):
Signal to Noise Ration: Over 60 db
100 to 125v, 60 plus or minus 6 cps,
Starting Time: Instantaneous (full speed
100 va.
in less than 1/10 sec).
Data Inputs to Main Unit
Stopping Time: At 15 rps movement less
3 stator and reference ph from 36-speed
than 2 in after stop button is depressed.
synchro of Stable Element (oriented to
Flutter and WOW: At 15 cps, less than 0.1
indicate roll).
% root-mean-square, measuring all flutter
3 stator ph and reference ph from 72-speed
components from 0 to 300 cps, using a
synchro of Stable Element (oriented to
tone of 3000 cps. At 7.5 in, under 0.2%.
indicate pitch).
Monitoring of Tape: Separate record and
3 stator ph and reference ph from compass
playback heads and amplifiers.
36-speed output
Playback Timing Accuracy: 0.2%
3 stator ph and reference ph from compass
Playing Time: 33 min. at 15 in speed on
single speed output
standard 10-1/2 in NAB reel, 66 min at
Sensing Channels: 14 channels, any eight of
7.5 in speed. The recorder will also
which may be recorded.
accommodate the standard RMA reel in
Telemetering Transmitter Channels: Consists
various thicknesses.
of eight carrier frequency between 4930 to
Rewind Time: 1 min for full NAB reel.
14, 770 cps. Frequency below these bands
Record Amplifier: Budging input, normally
are used for single voice channel, permit-
set up for plus 4 vu in.
ting the recording of pertinent information.
Playback Amplifier: Normal plus 4 vu out-
Calibrating Voltages
put. Rated to deliver 20 dbm without
Sensing Equipment
exceeding 1% total harmonic distortion
Translatory Motion: 5v equals 25 ft;
from 30 to 15, 000 cps.
5v equals 25 ft per sec; 5v equals
INSTALLATION CONSIDERATIONS
25 ft per sec 2.
Not available.
Stabilized Accelerometer: 5v equals 5,
PRINCIPAL COMPONENTS AND PHYSICAL DATA
COMPONENTS
QTY
OVERALL DIMENSIONS
UNIT WT.
(Inches)
(Pounds)
Linear Acceleration Transducer XGG10A-1
2
8-3/4 x 12-3/4 x 13-3/4
24
Stabilized Accelerometer Mount XQG22A-1
1
8-3/4 x 15-3/4 x 19-7/8
45
Acceleromoter Power Supply XBG17A-1
1
8-5/8 x 15-3/8 x 20-3/4
29
Double Integrating Computer XHG1A-1
1
14 x 16-1/4 x 19
39
Angular Rate Transducer XGGTA-1
1
12 x 16-1/4 x 19
35
Angular Rate Transducer XGG7A-2
1
12 x 16-1/4 x 19
35
Ships Motion Data Coupler XDG2A-1
1
8 x 16-1/8 x 19
15
Ships Motion Data Synchro Coupler
1
8 x 16-1/8 x 19
42
XDGBA-1
AN/SPN-10(XN-1): 2
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