These units are generally constructed in the form of an arc or in a complete circular form. They are grooved around the outer circumference to receive the cable, as shown in figure 2-38. The names sector and quadrant are used interchangeably. Sectors and quadrants are similar to bell cranks and walking

Figure 2-38.-Control system components.

Figure 2-39.-Series 145 and 155 quick-disconnect couplings.

beams, which are used for the same purpose in rigid control systems.

Learning Objective: Identify the various hydraulic hardware and seals used in naval aircraft. 

Hardware, such as the quick-disconnect coupling, and seals and packings are used throughout the aircraft. They are essential for safe and proper operation of aircraft systems. You must be familiar with the various types used on naval aircraft.