T-45A UJPT, E2-C2, ADV, & IUT Eng-19
Flight Instruments
5.
Reason for the change is purchase and repair
costs (NGS is much cheaper) and supply/
support commonality (F-14 uses same system;
T-45C uses GPS)
What does the SAHRS consist of, and what
?
inputs does it provide to its associated flight
instruments?
ANSWER:
1. The SAHRS/NGS consists of the following major
components: the strapdown sensor assembly
(SSA), the remote compass transmitter/induction
compass transmitter, and the mode control panel
(located on the center console in the FWD cockpit
only).
2.
The SAHRS/NGS provides pitch, roll, and heading
information to the ADI, HSI, HUD, ADR, and CAS.
Heading information is also provided to the
VOR/ILS/MB.
1.
Standard attitude heading reference system
(SAHRS)/Navigational Guidance System
(NGS) provides all attitude information to
the main attitude indicator (ADI) and
magnetic compass heading to the
horizontal situation indicator (HSI)
2.
Strapdown sensor assembly (SSA)
a.
Location: lower electrical bay
b.
Function
(1) Basically a "ring laser" gyro
assembly
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