 |
|||
|
|
|||
| ||||||||||
|
|  MIL-N-81497A(AS)
Standby Provisions - The equipment shall provide for
3.3.13
a standby position whereby rated voltage will be applied to the Gyroscope
Assembly heaters, equipment synchro transmitters, and Power Supply
`battery trickle charge circuitry as in all other modes. Only during
standby operation shall the Self Test Submode be operable.
Performance - Unless otherwise specified, values
3.4
set forth to establish the requirements for satisfactory performance
apply to performance under both standard and extreme service conditions
(3.3.10). When reduced performance under the extreme service conditions is
acceptable, tolerances or values setting forth acceptable variations from
the performance under the standard conditions will be specified. The
equipment described herein shall provide the specified accuracies of all
areas of the earth, for flight durations up to 12 hours.
Operation - The INS shall be capable of the
3.4.1
following.
General - The equipment shall operate as an inertial
3.4.1.1
navigator providing present position in terms of geographic latitude
and longitude, velocity, heading, and attitude data to external equip-
ment and shall be capable of performing a self contained ground align-
ment function. With the availability of external Doppler radar, the
equipment shall be capable of operating as a Doppler-damped inertial
navigator with the capability of airborne (inflight) alignment operation.
The INS shall additionally operate as an attitude a-rid heading reference
providing either magnetic heading or grid heading information. An
unstabilized magnetic heading mode shall be provided. Built in test cir-
cuitry and computer subroutines shall be included to determine equipment
malfunction. The equipment shall contain provision for manual position
fixes during operation and shall contain a magnetic deviation compensation
function.
Modes of Operation - The modes of operation shall be
3.4.1.2
controlled by the
Control, Navigation for safety of flight precautions.
at the Control, Navigation shall be displayed at the
All modes selected
Control, Gyroscope
Assembly. The modes shall be:
Inertial Mode
(1)
(2) Slave Mode
(3) Free Mode
(4) Compass Mode
(5) Standby Mode
3.4.1.2.1
Standby Mode - In the Standby Mode of operation rated
aircraft voltage to the following shall be provided as in all other
operational modes.
(1) Gyroscope Assembly Heaters
(2) Power Supply Battery Trickle Charge Circuitry
(3) Synchro Transmitters
10
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals