What is the main function of the arrows shown in block diagrams?

The main function of the arrows in block diagrams is to show the energy flow direction within the system. In block diagrams, which are commonly used in engineering and technical fields, blocks represent components or functions, and arrows indicate how energy, signals, or information moves between these components. This flow is crucial for understanding how a system operates, allowing technicians and engineers to analyze, design, and troubleshoot various systems effectively.

Recognizing the direction of energy flow helps in visualizing the interactions between different parts of the system, revealing how inputs are transformed into outputs and how various elements communicate with each other within the overall structure. This understanding is essential for those working with aircraft electronics and other complex systems.