ONFP-01
HUD I
II.
Associated aircraft systems 4.4.5.1.2
A. Standard attitude and heading reference system (SAHRS)
Fig 3: Interface of
1.
Pitch
HUD with Aircraft
Systems
2.
Roll
3.
Heading
4.
Validity signal
B. Radar altimeter
C. Pitot static system
1.
Indicated airspeed transducer
2.
Barometric altitude
D. Total air temperature (used in calculating Mach and true airspeed)
E. Triaxial accelerometer (g load)
F. Centralized warning system
1.
Caution
2.
Warning
G. Collateral inputs
1.
Angle of attack
2.
Armament system
a.
Master mode
b.
Weapon release
c.
ARM/SAFE (master armament switch)
3.
Gear handle
a.
UP: navigation cruise submode display
b.
DOWN: navigation approach submode display
4.
Weight on wheels (prevents entering airfield elevation while
airborne and entering test mode while airborne)
(11-95) Original
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