What is one purpose of a dual ignition system in an aircraft engine?

The primary purpose of a dual ignition system in an aircraft engine is to enhance engine reliability. By having two separate ignition systems, each engine cylinder is ignited by two spark plugs instead of just one. This redundancy ensures that if one ignition system fails, the other can continue to operate, reducing the likelihood of engine failure.

In addition to reliability, a dual ignition system can improve overall engine performance. With two spark plugs per cylinder, the combustion process is more efficient, leading to better fuel burning and enhanced power output. However, the main value of this system lies in the increased reliability it offers, which is crucial for safety in aviation.

While aspects like fuel consumption and overall engine weight may be influenced by the design of the ignition system or the engine itself, they are not direct purposes of implementing dual ignition. The focus of a dual ignition system is fundamentally centered around ensuring the engine operates effectively and safely under a variety of conditions.