Performance simulation and verification of air-turbo-ramjet

In order to verify the validity of air-turbo-ramjet (ATR) model, modifications were made with reference to public experimental data. ATR throttle performance and transient state performance were simulated by using the modified model. Comparisons between the calculated results and experimental data show no more than 1% errors in the modeling precision at the high corrected rotating speed and no more than 5% errors at the low corrected rotating speed. The increasing errors at the low corrected rotating speed are due to the inaccuracy of gas property at exit of the gas-generator and the burner. Trends of all the parameters obtained from the model agree well with the experimental data above the idle speed. The comparison results demonstrate the high fidelity of this ATR model, while the rationality and reliability of existing ATR model are also demonstrated.