Experiments on Nitrogen and Hydrogen Transpiration Cooling in a Model Scramjet Combustor

Transpiration cooling with bio-inspired structured surfaces

“…The common gaseous coolants of transpiration cooling include air, helium and nitrogen. Much research has indicated that a higher heat capacity of the gaseous coolant results in a higher transpiration cooling efficiency [13][14][15]. Several recent research papers applied liquid coolant, such as water, for transpiration cooling.…”