The Heiser 11 concept, also known as the "Heiser Cycle," is a type of hypersonic air-breathing propulsion system. This concept was first proposed by Robert Heiser in the 1960s and has since been studied and developed by various researchers. The Heiser 11 is a specific embodiment of the Heiser Cycle, which is designed to operate at speeds above Mach 10.
In supersonic flow, flameholders create low-speed recirculation zones where radicals accumulate and combustion can stabilize. Chapter 11 describes:
( \pi_c ) across the combustor is the second key metric. Losses arise from:
