Which type of engine uses pneumatic starters for its ignition process?

Large turbine engines commonly utilize pneumatic starters for their ignition processes. This type of starter is effective in providing the necessary power to initiate engine operation. Pneumatic starters operate by utilizing compressed air to spin the engine's turbine, bringing it up to a speed where fuel can be ignited and the engine can sustain itself.

This method is particularly advantageous for large turbine engines due to their design and operational requirements. Large turbine engines often require significant starting power and sustained torque delivery to ensure reliable ignition, which is efficiently provided through pneumatic means. The use of pneumatic starters helps in reducing the mechanical complexity and weight compared to electric starters, which can be beneficial for overall engine design.

In contrast, other engine types, like piston engines and rotary engines, typically have different starting mechanisms that do not involve pneumatic systems, focusing more on battery-powered electric starters or magnetos for ignition. Small turbine engines also tend to use electric starters or alternative ignition methods, making pneumatic starters a characteristic feature of larger turbine engines.