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This paper introduces the application of model based systems engineering (MBSE) method in designing cabin pressurization control system (PCS) for civil aircraft. Rhapsody and Simulink are used as the design and simulation tools. Use cases, functions flow, and state-machines of the system are built by corresponding models in three MBSE design phases, i.e. requirements analysis, function analysis and...
Electromagnetic catapult launch tends to be equipped on future carrier deck gradually. This paper aims to establish the mathematical representation of the system of electromagnetic aircraft launch considering aspects of carrier, aircraft and electromagnetic catapult. The proposed catapult system is evaluated by conducted simulation considering disturbance of deck wind and ground effect during stroke...
Aviation maintenance is a critical role of aircraft life cycle operation supports, application of advanced Prognostics and Health Management (PHM) technology to aircraft health monitoring and maintenance being in the research stage, facing lack of engineering practices and data problems. In this paper, the concept of maintenance mode based on PHM is put forward. On the basis of traditional maintenance...
In aircraft type certification, simulation system is used for airworthiness demonstration in lieu of real flight test in certain scenarios, and credit needs to be taken for the simulation system to validate it is capable of representing the characteristics of the airplane under certification. The general requirement and approaches for simulation credit taken is discussed. Typical simulation tasks...
This paper deals with a one-versus-one air combat algorithm that considers the direction of the lift vector of an unmanned combat aerial vehicle(UCAV). The air combat situation discussed in this study assumes that a gun-fight takes place within visual range(WVR), thus the air combat algorithm will perform the maneuver to chase the enemy's tail. The air combat algorithm previously proposed by the authors...
Unmanned Aerial Vehicle (UAV) development is a field with rising interest in recent years. One of its essential part is the autopilot, responsible for keeping the aircraft in desired flight conditions and for executing navigation tasks. Among the navigation tasks, one that stands out is the path- following operation, which guarantees that the aircraft follows a predefined trajectory. The literature...
This paper will introduce the design of the multi-dimensional Taylor network (MTN) optimal control in the flight control of aircraft. The MTN optimal control, which combines the classical architecture of feedback control system and the new controller structure, not only is suitable for the analysis of the stability of the closed-loop system, but also has advantages in the control of nonlinear systems...
In this paper, a three-stage generator model is established based on Modelica/Dymola. Start from the mathematical model of the generator, the main generator (MG) and the main exciter (ME) are remodeled by using the Modelica language. Then, the generator control unit (GCU), the pre-exciter (PE) and the rotating rectifier model are built using components in standard library of Dymola. And Dymola is...
Air Data Computer (ADC) is an electronics device computes air data flight parameters. The objective of this paper is to analyze, simulate, and propose hardware implementation module for the Air Data Computer. Simulation of ADC model has been faced by two problems. The first one was to choose true values of dynamic temperature because it depends on flight altitude and airspeed. The second problem is...
This paper proposes a method to calculate the lift force of propeller using simulation software FLUENT. And on the basis of this, a certain degree of applicability of the formula from blade element theory is verified. It also presents suggestions for the analysis of the lift force of the propeller in the case of the impact of the incoming flow.
In this paper the distribution of the engine bleed flow is studied using Flowmaster software. According the simulation, the pneumatic system collocation, difference of the valves, the locations the valves get the feedback pressures and the pressure of air bleeds from the engines all affects the distribution of the engine bleed flow. The imbalance of the flow can be weakened by assuring the consistency...
In this paper the dynamic simulation of the Reservoir in the liquid cooling system is studied using the simulink software. The expansion function of the liquid cooling system is realized by expansion tank usually. For a certain type aircraft, the expansion function of the liquid cooling system is realized by pressurized expansion tank and Reservoir together. Dynamic Simulation of Reservoir is very...
The study of single and bistatic radar scattering characteristics on stealth aircraft, for the future of collaborative detection on aircraft swarms is of great significance. Based on the characteristics analysis of stealth aircraft, using the software FEKO to establish stealth aircraft model, focusing on simulation research in different polarization ways, single and bistatic radar static RCS, through...
UAV flight safety is the first issue of the UAV's attention. The establishment of a UAV flight monitoring system not only meets the needs of the army but also has important significance. This paper introduces the development status and trends of aircraft fault prediction and health management at home and abroad. The key technologies of UAV flight monitoring system are analyzed, Including flight state...
Application of neural networks for direct prediction of lateral-directional force and moments coefficients from the measured flight data of the research aircraft is proposed in this paper. Proposed model of neural networks appears to be a suitable practical approach to develop relationship between flight variables. This relationship eliminates the need of aerodynamic model as well as thrust model...
The communication link integrity of an Unmanned Aerial System (UAS) is influenced by a number of factors, the most relevant being antenna radiation pattern and gain, receiver sensitivity, output power, terrain relief, aircraft's attitude and trajectory, and frequency band. The constraints are especially severe in the context of beyond line-of-sight and low altitude flight plan. This work presents...
The needs for traveling is increasing every year. Especially for aircraft transportation users, that are increasingly in demand because it is efficient in terms of time, terrain, and mileage. Additionally, an aircraft transport are currently categorized as the most advanced means of transportation. However aircraft transport still has the risk of accidents like other transportations. The availability...
Dispatch reliability (DP) is an index which describes the probability that a flight can take-off on time. This article intends to redefine the dispatch reliability, and thus can reflect a more realistic operational performance, and also have reference value to both aircraft designing and operating management. The new definition will contain relatively overall influencing factors, both mechanical and...
To mitigate the impact of unpredictable disruptions, airlines are seeking to proactively design schedules that incorporate some robustness features. In this paper, we propose a novel simulation-optimization approach using a particle swarm optimization algorithm for solving the robust aircraft routing and flight retiming problem. The approach requires inserting buffer times between departure times...
While aircraft fuel systems are not regarded as one of the complex features of an aircraft, they are essential systems of all aircraft. Their role and functional characteristics play a critical aspect in the design, certification, operation of both military and commercial planes. Engine fuel consumption varies according to the aircraft mission. In this paper, a typical aircraft fuel system configuration...
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