Generic New Modeling Technique for Turbofan Engine Thrust

2013 ◽  
Vol 29 (6) ◽  
pp. 1492-1495 ◽  
Author(s):  
Luis Fajardo Rodriguez ◽  
Ruxandra Mihaela Botez
Keyword(s):  
Modeling Technique ◽  
Turbofan Engine ◽  
Engine Thrust

scholarly journals Reference and Limit Governors for Limit Protection of Turbofan Engines

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2803 ◽  
Author(s):  
Wenhao Xu ◽  
Muxuan Pan ◽  
Jiakun Qin ◽  
Jinquan Huang
Keyword(s):  
Invariant Sets ◽  
Multiple Constraints ◽  
Turbofan Engine ◽  
Turbofan Engines ◽  
Admissible Sets ◽  
Engine Model ◽  
Engine Control System ◽  
Engine Thrust ◽  
Simulation Results ◽  
Limit Protection

This paper proposes a novel architecture of limit protection including the references governors and limit governors and applies this architecture to limit protection in turbofan engines. References governors are designed as add-on schemes to a pre-stability engine control system that modifies reference commands to avoid constraints violation. Limit governors are proposed as an assistant part for references governors adjusting constraints to prevent references from stopping updates. The use of output admissible sets for a class of variable constraints is exploited to form invariant sets. Simulation results based on a turbofan engine model show that references governors with limit governors can effectively enforce the multiple constraints and provide enhanced engine thrust when steady violation occurs.

scholarly journals NUMERICAL INVESTIGATION OF MIXED FLOWS TURBOFAN ENGINE THRUST CORRELATED WITH THE COMBUSTION CHAMBER'S PARAMETERS

2017 ◽  
Vol 19 (1) ◽  
pp. 35-48
Author(s):  
Irina-Carmen ANDREI ◽  
◽  
Constantin ROTARU ◽  
Maria-Cristina FADGYAS ◽  
Gabriela STROE ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Turbofan Engine ◽  
Engine Thrust ◽  
Mixed Flows

Correlation of Turbofan Engine Thrust Performance with Comnound Nozzle Flow Theorv

1971 ◽  
Vol 8 (7) ◽  
pp. 510-516
Author(s):  
M. R. L'ECUYER ◽  
J. J. MORRISON ◽  
W. E. MALLETT
Keyword(s):  
Nozzle Flow ◽  
Turbofan Engine ◽  
Engine Thrust ◽  
Thrust Performance

Computational Exploration of a Two-Spool High Bypass Turbofan Engine's Component Deterioration Effects on Engine Performance

2014 ◽  
Vol 629 ◽  
pp. 104-108 ◽  
Author(s):  
Awang Raisudin Awang Saifudin ◽  
Nurul Musfirah Mazlan
Keyword(s):  
Engine Performance ◽  
Aircraft Engines ◽  
Turbofan Engine ◽  
Deterioration Rate ◽  
Engine Thrust ◽  
Efficiency Losses ◽  
Computational Exploration ◽  
Erosion Effect ◽  
Overall Performance ◽  
Environmental Air

Aircraft engines are exposed to degradation due to several factors such as environmental air pollution, fuel content and ageing or degradation of engine’s components, which are experienced within specified time. While the turbofan in operation, its components deteriorate and consequently affect its performance. This study is aimed to computationally investigate the effect of components degradation on engine performance. A high bypass turbofan engine operated at cruise is selected for this evaluation and the simulation was performed using the Gas Turbine Simulation Program (GSP). The affected components considered are turbines and compressors with deterioration rate ranging from 0% to 5%. The effect of selected deterioration rate on engine thrust and thrust specific fuel consumption (TSFC) is studied. Results obtained show an agreement with literature where reduction in engine thrust and TSFC are observed. Turbine’s fouling has been found to be more severe than erosion in terms of power and efficiency losses. However, in terms of the overall performance, the erosion effect is more severe than fouling.

Sign in / Sign up

Export Citation Format

Share Document