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|  MIL-N-81497A(AS)
Type Designations - The parentheses (*) when used
6.6
in the type designation, will be deleted or replaced by either a
number or letter furnished by the procuring activity upon application
by the contractor for assignment of nomenclature in accordance with
3.3.8. The complete type number shall be used on nameplates, shipping
records and instruction books as applicable.
Revisions - In specification revisions and
6.7
superseding amendments an asterisk "*" preceding a paragraph number
denotes paragraphs in which changes have been made from the previous
issue.
This has been done as a convenience only and the government
assumes no liability whatsoever for any inaccuracies in these notations.
Bidders and contractors are cautioned to evaluate the requirements
of this document based on the entire content as written, irrespective
of the asterisk notations and relationship to the last previous
issue.
Associated Equipment - The equipment shall operate
6.8
with the following associated equipment with the interfaces specified
herein.
Type
Unit
ML- 1
Remote Compass Transmitter
AN/AYA-8
Data Analysis Programming Group
AN-4923/A
Central Servo Repeater
AN/APN-187
Doppler Radar
WW-21/A
Altimeter
AN/AJN-15
Flight Direction System
MIL-STD-704
Aircraft Power Sources
Definitions -
6.9
CEP - CEP is defined as the circle of a radius
6.9.1
which includes 50 percent of the points representing the position
error indicated by a large number of navigation systems, where each
system is used many times over courses in which bearings and distances
have been randomly chosen.
If the CEP of the system design has been
specified as A nautical miles per hour, we can futher infer that 39.35
percent of the positional error points will fall within a circle of
radius 0.85A, that 86.47 percent of the positional error points will
fall within a circle of radius 1.70A, and that 98.89 percent of the
positional error points will fall within a circle of radius 2.55A,
when a large number of systems are tested as specified above.
64
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