Adapter Assembly
The adapter assembly is a hollow, hexagonal
aluminum extrusion that forms the main support for the
rack assembly hardware. Attaching points on the
adapter assembly provide 14-inch or 30-inch spacing of
the suspension lugs, which allows installation on the
various types of aircraft.
The adapter assembly houses the electronic control
unit and cable assembly and provides for attachment of
six or three individual ejector units. A nose-cone
assembly and a tail-cone assembly enclose the ends of
the adapter assembly for aerodynamic purposes.
Electronic Control Unit
The electronic control unit is a solid-state electronic
control unit in a sealed container. The electronic control
unit controls all the functions of the bomb rack and has
the capability of releasing stores at 35-millisecond
intervals. The electronic control unit is disposable. If
it malfunctions, replace it with a new one.
Ejector Unit Assemblies
The ejector unit assemblies used on the IMER and
ITER are identical. The only difference between them
is the internal configuration of the release linkage. The
ejector units are configured for right-hand shoulder
installation, left-hand shoulder installation, or centerline
installation (fig. 10-25). They are identified by part
number. The shoulder stations are attached to the
adapter assembly by ejector unit attach blocks. The
centerline stations are attached by ejector unit attach
hangars. A IMER/ITER ejector unit (fig. 10-26)
consists of a housing assembly equipped with integral
wiring, a breech and ejector mechanism, store
suspension hooks, a store sensing switch, two
mechanical arming solenoids, an electrical arming unit,
adjustable sway braces, and mechanical linkage driven
by the breech or manual release lever to open the
suspension hooks.
The suspension hooks are spaced 14 inches apart
and are independently self-latching. There is a manual
release lever, which is used to open the hooks during
ground operation. The safety stop lever is used to safe
the ejector unit mechanically. Look at figure 10-27. It
shows the locked and unlocked positions of the ejector
unit safety stop lever. When the safety lever is in the
locked position, the hook release rod is physically
blocked from rearward movement and prevents
suspension hook release. If the hook release rod is not
in the full forward position, the safety stop lever cannot
be rotated to the locked position. A store sensing switch
is located under the forward suspension hook, and is
actuated by the opening and closing of the hook.
IMER/ITER Operational Description
The functional description of the IMER/ITER
ejector rack is discussed in two categories-ejector unit
mechanical operation and IMER/ITER electrical
operation.
E J E C T O R U N I T O P E R A T I O N A L
DESCRIPTION.— All ejector units on the IMER and
ITER are operationally the same. The ejection
mechanism is actuated by an electrically initiated
gas-generating cartridge. As you read this section, look
Figure 10-27.—Ejector unit safety stop lever.
10-21
