2.
LASEREF’”II Inertial Reference Svstem [IRS)
The Gulfstream IV factory-installed inertial reference system includes the
following:
. Two inertial reference units (IRUS)
. One attitude and heading reference unit (AHRU)
. One triple-channel mode select unit (MSU)
. One inertial system display unit (IDSU)
At the completion center, the customer has the option to replace the AHRU
with a third IRU, and the ISDU with a LASERTRAK’”. The IRS provides
positions, rates, and accelerations in all three body axis (pitch, roll, and
yaw), ground track and speed, and wind speed and direction to the rest of the
SPZ-8000 system.
A.
Inertial Reference Unit (See Figures 2-1 and 2-2, and Tables 2-1 through
2-4).
The inertial reference unit (IRU) is the main electronic assembly of the
IRS. The IRU contains an inertial sensor assembly, microprocessors,
power supplies, and aircraft electronic interfaces.
Accelerometers and laser gyros in the inertial sensor assembly measure
accelerations and angular rates of the aircraft.
FAULT BALL INDICATOR
\
(USEDTOfilTIATE~ ‘ ~ ,
TEST MODE)
1 /
AD-1 S478
Inertial Reference Unit
Figure 2-1
22-14-00
Page 102
Aug 15/91
Use or disclosure of information on this page is subject 10 the restrictions on the title page of this document.
To Next Page
Loading...
