What is the main purpose of bonding different parts of an aircraft?

The main purpose of bonding different parts of an aircraft is to ensure zero voltage difference between components. This process is crucial for the safe operation of an aircraft. By bonding, electrical continuity is established among various metal parts and components, which prevents the accumulation of static electricity and minimizes the risk of sparks or discharges that could ignite flammable materials. Ensuring zero voltage difference helps maintain a safe electrical environment, particularly in sensitive areas, such as around fuel systems and electrical equipment.

While improving aerodynamic efficiency, facilitating fuel flow, and reducing drag are important aspects of aircraft design and performance, these are not the primary reasons for the specific practice of bonding. The focus on electrical safety and static discharge management through bonding is vital to ensuring overall aircraft safety during operation.