High Energy Pulses for Robust Scramjet Ignition

Scramjet engine ignition systems are challenging due to the typically short time available for ignition and unfavorable flow conditions. Many existing approaches use consumable accelerant ignition aids which add size, complexity, safety, or logistical challenges. Spark igniters are typically limited in pulse energy and do not deposit energy in an ideal location. Under the proposed program, Creare is developing a pulsed ignition system for scramjet engines that uses only onboard resources and no unique consumables. Our system delivers high pulse energy to an ideal region in the engine to allow rapid and reliable flame ignition and propagation. In the Phase I program, we will developed and tested an initial prototype system which exceeded our performance goals.  In the Phase II program, we will refine the design, expand the operating envelope of the system, and demonstrate superior ignition performance in a scramjet engine combustor.