T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
b.
GPS altitude is not, otherwise, used by GINA
INSTRUCTOR NOTES
Cockpit altitude read-outs are exclusively Air Data Computer
(ADR) computational products. GINA altitude is internally
processed, but not used for display purposes.
PROGRESS CHECK
Question 5 -- 1.7.7.6.4
How does GPS system determine aircraft position from
GPS satellite signals?
ANSWER: Pseudo-ranges from the satellites are calculated by
measuring the time it takes the various GPS signals to travel
from GPS satellites to the aircraft. Then, since the GPS
satellite positions are known values, a relatively simple
trigonometric solution determines aircraft coordinate position
(3-dimensional).
V.
GINA Components 1.7.7.6.1
Sg 5, fr 1
Lesson Organization
A.
LITTON nomenclature: LN-100G
Sg 5, fr 2
B.
GINA is Government Furnished Equipment (GFE)
Fig 11: GINA
Components
C.
Contains three (3) Litton ZLG™ sealed laser gyro units
combined with three (3) accelerometers (LITTON A-4
assembly) to form the INS sensor assembly
D.
Contains one (1) ROCKWELL-COLLINS GPS receiver
card
E.
BACKGROUND:
1.
T-45C GINA development began in 1990; derived
from the LITTON LN-100 product family and
Original (9-98)
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