Experiments were conducted on a hyper-combustor of the turbine based combined cycle engine. First a model hyper-combustor rig and experimental system were designed

and then experiments were conducted to study the combustion performance including ignition characteristic

lean blowout characteristic and combustion efficiency under different inlet velocity coefficient

inlet temperature and fuel/air ratio(FAR). The test results show that the ignition equivalence ratio firstly decreases and then increases

lean blowout equivalence ratio and combustion efficiency increase with the turbo duct inlet velocity coefficient increasing from 0.10 to 0.25.The ignition and lean blowout equivalence ratio decrease and combustion dfficiency increases when the turbo duct inlet temperature increasing from 573K to 873K. Similarly the combustion efficiency increases when the bypass duct inlet velocity coefficient or temperature increases. The minimum ignition and lean blowout equivalence ratio obtained from the experiment is 0.984 and 0.6 respectively.