To study the change mechanism and control of variable cycle engine in process modal transition, a model based on component level characteristics is established. The two-dimensional CFD technology used to simulate influence mode selection valve rotation flow field, which improves accuracy model. Furthermore, constant plan proposed transition reduce installed drag. adopts augmentation linear quadratic regulator method. Simulation results indicate that method able effectively bypass ratio...

The research on modeling and installation performance control of three ducts separate exhaust variable cycle engine has been studied. In this paper, we established the fan, low pressure high compressor model based stage-stacking method. On basis, a component-level mathematical is constructed adjustable mode selector valve area, third bypass its nozzle are established. Besides, took inlet inside outside characteristic into consideration. simulation showed that could be able to modulate...

In this article, a novel performance-seeking control method based on deep neural network and interval analysis is proposed to obtain better engine performance. A modeling which has stronger representation capability than conventional can deal with big training data adopted establish an on-board model in the subsonic supersonic cruising envelops. Meanwhile, global optimization algorithm applied here get Finally, two simulation experiments are conducted verify effectiveness of methods. One...

In the overall design process of turbofan engine, it has become crucial to address challenge selecting parameters that not only meet flight thrust demand but also enhance engine economy. As for stealth performance in future fighter aircraft increases, becomes imperative consider infrared indicators during process. The adaptive cycle possesses an adjustable thermal cycle, necessitating careful attention selection fulfill requirements. Therefore, this paper proposes a multi-objective...

A novel performance seeking control method based on hybrid optimization algorithm and deep learning modeling is proposed to get a better engine performance. The method, neural network, which has strong representation capability can deal with big training data, adopted establish an on-board model. algorithm—genetic particle swarm optimization–feasible sequential quadratic programming—is applied control. genetic programming not only the global search ability of optimization, but also high...

Abstract As per few investigation in installed performance for variable cycle engines, an analysis scheme is proposed on the basis of integrating engine and supersonic inlet system model. An integrated mathematical model, containing built, realizing simulation influences installation by varying geometry components. The impact geometric regulation was analyzed concluded respectively. experimental results show that overflow resistance with optimization reduced at subsonic cruise stage, fuel...

In order to consider the inlet and engine integrated model of supersonic airliner, dynamic identification control normal shock are studied. The research is based on bleed air flow rate under conditions. With two-dimensional CFD inlet, static effects bleeding position were investigated. transfer function was identified, simultaneously paper carried out a comprehensive study model, which established component level model. relationship between total pressure recovery coefficient has been taken...

Considering the supersonic inlet model with normal shock position feedback, integrated control method of and turbofan engine is studied. The includes component level engine. Combining relationship between total pressure recovery coefficient, constructed. On basis this model, closed-loop simulation carried out, which shows that matching point could be stabilized near optimal value while restraining stream disturbance. Furthermore, based on H ∞ algorithm, an designed to installation thrust...

The adaptive cycle engine gains significant attention due to its variable thermodynamic cycles and multi-duct characteristics, which are utilized for thermal management enhance the performance. This paper explores features of technology in engines aims improve flight An analysis is conducted on impact duct air bleed propulsion properties, infrared radiation characteristics. Initially, a model was established. uses ducted cold cool high temperature components. Subsequently, method analyzing...