Adaptive jet engines work analysis and control

• Autorzy: Kowalski M.
• Języki publikacji: EN

Abstrakty

EN

The paper describes major designs of adaptive jet engines as well as their structural and operational advantages. Attention is paid to actual thermodynamic cycles of such engines and energy balance of flows. Particular attention paid to a double-rotor engine designed by Pratt & Whitney, where a portion of air is bled from downstream of the compressor and then supplied to the area downstream the turbine when the engine is operated at its maximum performance (turbine bypass engine). Then attention is paid to actual thermodynamic cycles of such engines and energy balance of flows. It was shown that real working cycles of these engines represent figures with variable surface areas, which is the reason for the second name of these units - engines with variable thermodynamic cycle. It is explained how basic parameters of such engines affect sensitiveness of operating cycles and controllability. The analysis has been conducted separately for internal and external channel. The sensitivity analysis for the working cycle makes it possible to select parameters that are potentially controllable and adjustable. To sum up the foregoing deliberations one has to state that operation of turbojet adaptive engines is the topic that needs much more investigation. Even the design solution of the engine itself, although being really exciting and promising, is troublesome in the aspects of the design and process engineering, and will lead to a series of operation and maintenance problems.

Słowa kluczowe

EN

adaptation engine; parameters of the engine air; sensitivity of work cycle

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 2
• Strony: 225--234
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Kowalski M.

• Air Force Institute of Technology 6 Księcia Bolesława Street, 01-494 Warsaw, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Dzierżanowski, P. at al., Turbinowe silniki odrzutowe. WKŁ, Warszawa 1983. (Turbojet engines, WKŁ, Warsaw 1983).
• [2] Kowalski, M., Analiza termogazodynamiczna parametrów użytkowych turbinowego silnika odrzutowego typu „bypass”. Rozprawa doktorska, Warszawa 1995. (Thermal and gaso-dynamic analysis of operational parameters attributable to a turbojet engine of the ‘bypass’ type. PhD thesis, Warsaw 1995.
• [3] Kowalski, M., Orkisz, M., Wrażliwość pracy obiegu turbinowych silników adaptacyjnych. III Sympozjum naukowe - WSOSP, Dęblin 1996. (Sensitivity demonstrated by the value of work during a thermal cycle in turbojet adaptive engines. Scientific symposium, - WSOSP, Dęblin 1996).
• [4] Kowalski, M., Orkisz, M., Szczeciński, S., Silniki adaptacyjne – perspektywy ich zastosowania. AERO-Technika Lotnicza 2/1992 – Kwartalny dodatek specjalny. (Adaptive engines – prospects and possible applications. AERO – Avionic Technology 2/1992 – Quaternary extra supplement).
• [5] Kowalski, M., Orkisz, M., Szczeciński, S., Napęd lotniczy typu „bypass”. (Avionic drive of the ‘bypass’ type). WPT 3/1993.
• [6] Muszyński, M, Orkisz, M., Modelowanie turbinowych silników odrzutowych. Biblioteka Naukowa Instytutu Lotnictwa, Warszawa 1997. (Modelling of turbojet engines. Sientific library of the Air Force Institute of Technology, Warsaw, 1997).
• [7] Orkisz, M., Wybrane zagadnienia z teorii turbinowych silników odrzutowych. (Selected issues from the theory of turbojet engines). ITE, Radom 1995.
• [8] Orkisz, M., Charakterystyki użytkowe turbinowych silników odrzutowych, a stateczność pracy sprężarki. (Operational characteristics of turbojet engines and operation stability of their compressors), WOSL, Dęblin 1990.
• [9] Wierzbicki, A., Modele i wrażiwość układów sterowania. (Models and sensitivity of control systems). WNT, Warszawa 1977.