Fundamental flameholding and combustion tests using simple V-gutters for the flame holders were investigated in order to obtain basic design data of a natural gas fueled ram combustor. Then Laboratory Scaled Ram Combustor (LSRC) was designed and fabricated in the first phase of the HYPR project using the fundamental flameholding and combustion tests results. Various tests were conducted to study combustion performance, such as flame stabilization, combustion efficiency, pressure loss and so on, of the LSRC at the simulated conditions of flight Mach number 3. The results indicate that high combustion efficiency is attainable with controlling the concentration of methane air mixture flowed into a flame holder even at a low equivalence ratio.

This content is only available via PDF.