The pitch trim system operates on which voltage?

The pitch trim system typically operates on 28VDC in most aircraft systems. This voltage level is commonly used in aircraft electrical systems as it provides a good balance between power availability and efficiency for various components and actuators, including those involved in trim control.

The selection of 28VDC is part of standard practices in aviation design, ensuring compatibility with other systems and components also designed to operate at this voltage, thus facilitating reliability and ease of integration across the aircraft's electrical architecture.

Voltage levels like 20VDC or 24VDC are less common in aviation applications, and while some systems may utilize them, they usually do not serve as standard operating voltages for critical systems like pitch trim. The use of 32VDC is also not standard in many aircraft applications, making 28VDC the primary and widely accepted operational voltage for pitch trim systems.