What are the two main advantages of a dual ignition system?

The dual ignition system in aircraft engines offers significant advantages primarily related to safety and combustion efficiency. The first key benefit is safety; having two independent ignition systems means that if one system fails, the other can continue to provide ignition to the engine. This redundancy is critical for ensuring engine reliability and maintaining control during flight, as an engine failure due to ignition issues can be catastrophic.

The second advantage is more complete combustion of the fuel-air mixture. With two spark plugs igniting the mixture in each cylinder, the combustion process becomes more effective. This leads to improved performance in terms of power output and efficiency, as the fuel burns more thoroughly. The enhanced combustion reduces the risk of engine roughness, improves overall engine performance, and can also lead to lower emissions due to more complete burning of fuel.

These benefits are vital for flight safety and efficiency, making dual ignition systems a standard feature in modern aircraft engines.