CHAPTER 16

AIRCRAFT WEAPONS SYSTEMS TEST EQUIPMENT

Aviation ordnancemen use test equipment in all phases of electrical testing of weapons systems. The testing procedures you use are required at specific maintenance levels, such as depot, intermediate, or organizational. Test equipment varies in complexity, from a small pocket tester to a very large and complex unit. No matter the size or complexity, the purpose of the test equipment is to make sure that the weapon and the launching platform (aircraft) function correctly.

TEST EQUIPMENT

LEARNING OBJECTIVE: Identify the test equipment used with aircraft weapons systems. Recognize the purpose and use of each.

All the test equipment you will use isn't described ^{in this chapter.} Also, the step-by-step procedures

Figure 16-1.-AN/PSM-4 multimeter.

required to operate the test equipment aren't listed. To do your job, you need to be able to identify the equipment, know what it is used for, and how it is used. The specific step-by-step procedures that you should follow when you use test equipment can be found in applicable publications.

MULTIMETERS

The AN/PSM-4 and 77/AN multimeters (figs. 16-1 and 16-2) are used to measure resistance (ohms) and voltage (ac or dc) in an electrical circuit. You use them to test aircraft circuits when no special test equipment is available, or when reasonably accurate measurements are required.

Figure 16-2.-77/AN multimeter..

AN/AWM-54 AIRCRAFT FIRING CIRCUIT TEST SET

The AN/AWN-54 aircraft firing circuit test set (fig. 16-3) is a portable, battery-operated, flight line test set used at duty stations ashore or afloat. You use this test set to check for stray voltages and various aircraft firing circuits, such as rocket firing, bomb release, missile firing, and JATO.

The complete AN/AWM-54 test set includes the following components:

AWM-54 test set Transit case Spare battery pack Spare extension cable

Figure 16-3.-AN/AWM-54 aircraft firing circuit test set.

Figure 16-4.-AN/AWM-42A fuze function control test set.

Adapter retainer assembly

Technical manual

A battery charger (not shown) is also available, but you need to order it separately. The AWM-54 test set weighs about 7.5 pounds. It has a strap you can place around your waist for carrying the set.

Several accessory adapter assemblies are available for the test set. These adapters allow you to connect the test set to various armament configurations found on different aircraft. Some aircraft require only one or two adapter assemblies while others require five or six. These adapters are not furnished with the test set; they must be ordered separately.