Weapons
Preparation
RELEASE AIRSPEED/MACH NUMBER
Release airspeed is a true airspeed. The head-up display (HUD) in the T-45C has a true airspeed
readout, but as a backup, you need an indicated airspeed or mach number, whichever is easier to
read on your aircraft instruments. The HUD has an indicated airspeed and a mach readout, but a
failure affecting true airspeed would probably affect these readouts. Instrument panel indicated
airspeed/mach is a good backup for the HUD. If you want to use mach, you will have to compute it
using the NATOPS table.
“Z” DIAGRAM
“Z” diagrams are useful presentations of pattern and weaponeering information included on briefing
boards and kneeboard cards (Figure 2).
Pattern Alt.
A/S
RPM
Dive Angle
Checkpoint Alt.
Initial Pipper Placement
Mil Setting
Release Alt.
Release TAS/IMN
Radalt Setting
Figure 2: “Z” DIAGRAM
(4-03) Original
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