- Tytuł:
- Flight characteristics of helicopter turboshaft engine with free turbine
- Autorzy:
-
Czarnecki, M.
Orkisz, M. - Powiązania:
- https://bibliotekanauki.pl/articles/243360.pdf
- Data publikacji:
- 2007
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
propulsion
engine
turboshaft
helicopte
performance
ceiling - Opis:
- Numerical model for selected turboshaft engine is highly required by helicopter and aircraft designers. Presented paper includes key features for turboshaft numeric model builders. The study of the real performance and estimated results showed that presented method is exact for higher throttle levels. Presented method will be useful for preliminary design when is no need to acquire real test data. Numerical model was build for steady state operations, because maintenance manual for selected engine includes tests records only at its state. In that case helicopter turboshaft manuals are very similar, steady state was used widely for testing in TB3 and T700 family engines. Steady state reduced effect of rotor head positions which was influencing total engine performance. TB3-117 helicopter turboshaft engine, engine cutaway sections, first step - expansion ratios, second step - on the ground calculations for different throttle position, engine inlet mass flow ratio as a function of maximum allowable EGT, and throttle position, third step - on the ground calculations for different throttle position, second step - on the ground calculations for different throttle position, performance charts for RR-250 BJ turboshaft, and for TB3-117 M/MT - Mi-14/17, TB3-117 III-series Mi-24 are presented in the paper.
- Źródło:
-
Journal of KONES; 2007, 14, 3; 149-151
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł