Which type of harness is commonly used in ejection seat systems?

The combination harness is commonly used in ejection seat systems because it effectively integrates both shoulder straps and a lap belt into a single system that provides optimal restraint during ejection. In high-speed scenarios, such as ejection from an aircraft, the forces involved can be immense. Therefore, a combination harness ensures that the pilot is securely held in place, minimizing the risk of injury and maximizing the chances of a successful ejection. This harness design is essential for maintaining stability and control during the violent forces experienced during the ejection process.

While shoulder harnesses, lap belts, and chest straps serve important purposes in various restraint systems, they are typically part of a broader combination harness structure in ejection seats. Each of these components plays a role in safety, but none of them alone offer the comprehensive protection needed for the unique dynamics of ejection scenarios. The combination harness addresses all potential risks associated with ejection, making it the preferred choice in these critical systems.