• Journal of the Korean Society of Propulsion Engineers
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• v.14 no.6
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• pp.79-88
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• 2010

This paper dealt with the performance modeling of a low bypass turbofan engine for supersonic aircraft. The Pratt and Whitney F100-PW-229 engine has been employed for low bypass turbofan engine performance modeling. Generally, the complete commercially-classified informations concerning the engine are unknown. The components' generic characteristics and assumptions made in order to build the F100-PW-229 engine performance model using by the published data from the open literature as basic data are described. Through the comparison of engine performance model's analysis data using Gasturb11 with engine deck data showed that the engine performance model was evaluated to be properly constructed.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2010.05a
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• pp.239-248
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• 2010

This paper dealt with the Performance Modeling of a low-bypass turbofan engine for supersonic aircraft. The Pratt and Whitney F100-PW-229 engine has been employed for low-bypass turbofan engine performance modeling. Generally, The complete commercially-classified information concerning the engine are unknown. So, Components' generic characteristics are described and assumptions made in order to model the F100-PW-229 engine performance model. All the analysis has been undertaken using published data taken from the open literature. The results of the Engine Performance using Gasturb11 showed that the Engine performance model was evaluated to be properly constructed.

• Journal of the KSME
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• v.29 no.6
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• pp.594-600
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• 1989

항공기용 원동기는 항공기를 추진시키기 위한 동력장치이다. 항공기가 추진력을 얻기 위해서는 프로펠러를 회전시켜 대량의 공기를 뒤로 가속시켜 그 반작용을 이용하는 방법과, 단순히 배기 가스를 뒤로 고속분사시켜 그 반작용을 이용하는 방법이 있다. 피스톤 엔진은 전자를, 터보 제트 엔진은 후자를 대표하고 있는데 두 가지 방법을 절충하여 터빈으로 프로펠러를 회전시키는 터보 프롭엔진과, 헬리콥터의 로우터를 회전시키는 터보 샤프트 엔진도 있다. 또 터보 제트 엔진과 터보 프롭 엔진의 증간성능을 꾀한 터보 팬 엔진이 있는데 효율이 아주 좋기 때문에 급속히 발 전되어 항공기용 원동기의 대명사격으로 현재 군용이나 민간기용으로 널리 사용되고 있다. 최 근에는 터보팬 엔진과 터보 프롭 엔진을 절충한 새로운 터보 프롭 APT (advanced turbo prop) 엔진의 실용화가 추진되고 있다. 이상과 같은 종류의 엔진 이외에도 항공기용 원동기에는 극히 제한된 용도에 쓰이는 램 제트와 펄스 제트 엔진 그리고 로켓 엔진 등이 있다. 원동기는 그 용 도에 따라 개발, 활용되는 것이기 때문에 오랜 역사를 지닌 피스톤 엔진은 아직까지도 경항공 기용 원동기의 주류를 이루고 있고, 앞으로도 터보 프롭 엔진과 더불어 나름대로 계속 활용될 것으로 전망된다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.3
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• pp.269-278
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• 2011

The details of engine manufacturer's engine simulations are generally kept secret and only those parameters that are used for control purposes are accessible to users. Hence, there is often only a limited amount of data accessible for creating a performance model of the engine. The performance modeling of a low bypass turbofan engine for supersonic aircraft is described herein. The Pratt and Whitney F100-PW-229 engine has been employed for low bypass turbofan engine performance modeling. Published data from the open literature are used as initial data for building the F100-PW-229 engine performance model. The unknown components' characteristics were estimated by optimization of parameters using by adaptive random search method and sensitivity analysis with respect to design variables. The engine performance model was evaluated to be properly constructed through the comparison of result of engine performance analysis and engine deck data.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2002.04a
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• pp.29-30
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• 2002

본 연구에서는 Boeing사에서 개발한 EASY5 프로그램을 이용하여 터보팬 엔진을 모델링하고 성능해석을 수행하였다. 연구대상 엔진인 BR715-56 엔진은 추력이 20,000lbf급인 2 스풀 터보팬 엔진으로 분리흐름(Separate Flow) 형이다. 엔진은 팬, 압축기, 연소기, 저압터어빈, 압축기터어빈, 팬 노즐 및 Core 노즐로 구성되어 있으며 Station No.는 Fig 1과 같다. 연구에 사용된 EASY5 프로그램은 동역학 시스템을 모델링하고 해석하는 프로그램으로, 제공되는 라이브러리 구성품을 이용하여 보다 쉽게 동적 시스템을 모델링할 수 있다. 또한 Steady-State Solver를 이용하여 정적 평형상태를 빠른 시간에 찾을 수 있어 보다 빠른 해석을 수행할 수 있다. 또한 해석된 동역학 모델을 FORTRAN이나 C 코드로 생성하여 제공함으로써 프로그램의 수정이나 보완이 용이하고, 제공되지 않은 시스템의 라이브러리 구성품의 경우에는 사용자 정의 코드를 만들어 사용함으로써 프로그램의 기능을 확장할 수 있다. EASy5는 대표적인 제어기 설계 소프트웨어인 MATLAB, MATRIX-x와의 호환도 가능하며 NASTRAN등과 같은 유한요소 해석 프로그램과의 데이터 공유도 가능하여 보다 폭 넓은 시스템 모델링과 제어기 설계도 쉽게 할 수 있다.

• Proceeding of EDISON Challenge
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• 2016.11a
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• pp.9-14
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• 2016

버드 스트라이크는 항공기 안전에 큰 위협을 주고 있다. 새를 막기 위하여 공항에서 여러 가지 방법들을 이용해 새를 쫓고 있지만 임시방편인 경우가 많거나 근본적인 방법은 아니다. 본 연구에서는 이러한 버드 스트라이크를 막기 위하여 새를 막는 장치를 엔진 흡입구에 장착하고, 이 흡입구가 엔진 흡입구의 성능에 어떠한 영향을 주는지 알아보려고 한다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2012.05a
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• pp.592-596
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• 2012

The details of engine data are essentially needed for engine modeling and simulation. But, the engine data are kept secret because the information is company's experiential property. In this paper performed the performance modeling of the mixed flow turbofan engine cycles from the general available engine data, and verify the validity.

• Journal of Aerospace System Engineering
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• v.18 no.1
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• pp.46-52
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• 2024

Engine test cell should provide controlled test environment to properly verify requirements of engine performance and operational characteristics. However, since test cells cannot be perfectly identical to each other, new test cell requires processes to verify reliability of test results and correct differences through correlation testing using a baseline test cell. This paper studies about what should be considered when correlation testing is performed based on commonalities and differences between turbofan and turboshaft engine. It provides examples of correlation test procedure. In the future, it is expected that this study will help set up a standard that can certify test facility according to engine type.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.50 no.10
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• pp.717-727
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• 2022

An algorithm is realized for estimating the component fault and health diagnosis such as a deterioration. Based on the turbofan engine health diagnosis model, from the health parameters which are estimated by a real time tracking filter, the outliers are eliminated efficiently by an effective median filter to minimize an false alarm. The difference between the fault and deterioration trends is identified by the detection measure for abrupt change, thereby the clear diagnosis classifying the fault and the health condition is possible. The effectiveness of the algorithm for fault and health diagnosis is verified from the simulated results of engine component faults and deterioration.

• Current Industrial and Technological Trends in Aerospace
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• v.6 no.1
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• pp.35-43
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• 2008

Technical trends of propulsion system for small aircraft are investigated. Currently, most small aircraft are equipped with piston engine, turboprop and turbofan engines, and the technology development is going continuously. For piston engines, new diesel engines are arising besides gasoline engine. The diesel engines use relatively low-cost and easy to get fuel(Jet A), so the demand for small aircraft is getting increased, and new engines with high reliability and efficiency are being developed. For gas turbine engines, application of small turbofan is getting increased for newly arising VLJ market and the engine demand will be rapidly increased in the future. On the other hand, some electric propulsions without fossil fuels are being developed without high cost of fuel and environmental effects. In the future, propulsion system for small aircraft will be developed having enhancement of performance and efficiency with higher reliability and safety.