The present study aimed at assessing a novel annular-ducted fan lift system for VTOL aircraft through computational fluid dynamics (CFD) simulations. The power and lift efficiency of the lift fan system in hover mode, the lift and drag in transition mode, the drag and flight speed of the aircraft in cruise mode and the pneumatic coupling of the tip turbine and jet exhaust were studied. The resu...

The turbine is the main part of aircraft engine responsible for converting fuel into energy to drive propeller blades. article devoted maintenance and repair an turbine, including basic procedures techniques used detect correct defects damage in turbine. It also describes process diagnosing analyzing failures, how prevent such failures from occurring future. Turbine critical flight safety, can ...

Control technologies are innovated to satisfy increasingly complicated control demands of gas turbine engines. In terms limit protection control, a novel model-based multivariable method, which is achieved by adaptive command reconstruction and multiple-control loop selection switch logic, proposed in this paper address the problem balancing smaller thrust loss safe operations comparing with wi...

Determination of the starter torque-speed diagram is a major task in the design or selection of a proper gas turbine starter. In this paper, the maximum power of the MGT-40 gas turbine starter was calculated based on the dynamics of the rotor, start-up logic, and compressor map. In a recent research, the pressure ratio was assumed as a linear function of the rotor speed and the required starter...

The article is devoted to algorithm development select an optimal control law of a gas turbine engine in the conditions external additive noise and incomplete information regarding values parameters. A step by-step for problem solving given. effectiveness proved by numerical experiments.

after second world war, we have seen a very rapid development of thermoelasticity stimulated by various engineering sciences. as we know, structures behave in different fashion under climate variation and the most responsible factor for these variations is heat which falls through and causes deformation of the body. a considerable progress in the field of aircraft and machine structures, mainly...

Organic Rankine Cycles using radial turbines as expanders are considered as one of the most efficient technologies to convert heavy-duty diesel engine waste heat into useful work. Turbine similarity design based on the existing air turbine profiles is time saving. Due to totally different thermodynamic properties between organic fluids and air, its influence on turbine performance and loss mech...

This paper presents controllers based on linear and nonlinear models of an aircraft gas turbine engine. These models along with the performance indexes, ITAE, IAE and IES are used to estimate the parameters of a PID controller. The parameters and hence the quality of the controllers are very much dependent on the accuracy of the models. It is shown that the Nonlinear AutoRegressive Moving Avera...

This study presents a platform for industrial, real-world simulation–optimization based on web techniques. The design of the platform is intended to be generic and thereby make it possible to apply the platform in various problem domains. In the implementation of the platform, modern web techniques, such as Ajax, JavaScript, GWT, and ProtoBuf, are used. The platform is tested and evaluated on a...