Adaptive jet engines, advantages and application opportunities

• Autorzy: Kowalski M.
• Języki publikacji: EN

Abstrakty

EN

The paper has been intended to shortly describe the design of an adaptive jet engine, commonly termed 'the bypass engine'. Examples have been presented of how the bleeding of air affects the most essential engine performance characteristics, i.e. thrust, specific fuel consumption, and efficiency. Pointed out are economic advantages (only slight) of the application of this design as compared to the one-pass turbojet engine with no bleed. Furthermore, considered are capabilities to adapt an engine design of the bypass type for a one-pass turbojet engine K-15 as one of several upgrade opportunities. Simulation-based computations have proved, however, that there are some limitations on the bleed air amount and initial engine operational range for the accomplishment of the idea from the standpoint of capabilities to maintain conditions for the compressor-turbine matching. Also, the effect of this type of air bleeding upon the engine running-up process and the change in the running-up time for this type of the upgraded engine has been shown. In the Recapitulation and Conclusions section a mention has been made on the amount of bleed air to be passed through external channels from behind the compressor to behind the turbine: the bleed air amount increases as the total rate of the air flow along the engine flow path increases. It means that better effects of applying this type of air bleeding processes are gained in large engines. Presented are also capabilities of further developments and applications.

Słowa kluczowe

EN

transport; combustion engine; adaptation engine; parameters of the engine air

• 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. 3
• Strony: 161--168
• Opis fizyczny: Bibliogr. 8 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 termodynamiczna parametrów użytkowych turbinowego silnika odrzutowego typu „bypass”. Rozprawa doktorska, Warszawa 1995. (Thermal and gaso-dynamic analysis of operational parameters attributableto a turbojet engine of the 'bypass’ type). PhD thesis, Warsaw 1995.
• [3]. 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).
• [4]. Kowalski, M., Orkisz, M., Szczeciński, S., Napęd lotniczy typu „bypass”. (Avionic drive of the ‘bypass’ type). WPT 3/1993.
• [5]. Muszyński, M, Orkisz, M., Modelowanie turbinowych silników odrzutowych. Biblioteka Naukowa Instytutu Lotnictwa, Warszawa 1997. (Modelling of turbojet engines). Sientific library of Institute of Aviation, Warsaw, 1997.
• [6]. Orkisz, M., Wybrane zagadnienia z teorii turbinowych silników odrzutowych. (Selected issues from the theory of turbojet engines). ITE, Radom 1995.
• [7]. Orkisz, M., Charakterystyki użytkowe turbinowych silników odrzutowych, a statecznośćpracy sprężarki. (Operational characteristics of turbojet engines and operation stability of their compressors), WOSL, Dęblin 1990.
• [8]. Szczeciński, S., Dwuwirnikowe i dwuprzepływowe otnicze silniki turbinowe. (Two-rotor and double-flow turbine aircraft engines). WKŁ, Warszawa 1971.