This device provides a reliable method for initiating combustion in various applications. Consisting of a cord connected to a friction-sensitive chemical compound, it produces a spark when the cord is sharply pulled. A common example involves its use in model rocketry, where it serves as a safe and effective alternative to direct flame ignition of the rocket engine.
Its significance stems from its inherent safety and simplicity. It offers a controlled and predictable ignition process, reducing the risk of accidental or premature activation compared to other methods. Historically, similar mechanisms have been employed in diverse fields, ranging from pyrotechnics to emergency signaling, demonstrating their long-standing utility.
