Results 91 to 100 of about 21,160 (284)

Study of Bypass Ratio Increasing Possibility for Turbofan Engine and Turbofan with Inter Turbine Burner [PDF]

Journal of KONES, 2019
Abstract Current trends in the high bypass ratio turbofan engines development are discussed in the beginning of the paper. Based on this, the state of the art in the contemporary turbofan engines is presented and their change in the last decade is briefly summarized. The main scope of the work is the bypass ratio growth analysis.
openaire   +1 more source

Study of unconventional aircraft engines designed for low energy consumption [PDF]

A study of unconventional engine cycle concepts, which may offer significantly lower energy consumption than conventional subsonic transport turbofans, is described herein.
Hirschkron, R., Johnston, R. P., Neitzel, R. E.   +2 more
core   +1 more source

HMM-Based Method for Aircraft Environmental Control System Turbofan Rolling Bearing Fault Diagnosis

Shock and Vibration
In response to the high-noise, nonlinear, and nonstationary characteristics of vibration signals from aircraft environmental control system (ECS) turbofan rolling bearings, this paper proposes a diagnostic method for the degree of ECS turbofan bearing ...
Gang Yang, Yu Wang, Dezhao Qin, Rui Zhu, Qingpeng Han   +4 more
doaj   +1 more source

Effect of forward motion on engine noise [PDF]

Methods used to determine a procedure for correcting static engine data for the effects of forward motion are described. Data were analyzed from airplane flyover and static-engine tests with a JT8D-109 low-bypass-ratio turbofan engine installed on a DC-9-
Blankenship, G. L., Low, J. K. C., Merriman, J. E., Watkins, J. A.   +3 more
core   +1 more source

Effects of chemical equilibrium on turbine engine performance for various fuels and combustor temperatures [PDF]

A study was performed to quantify the differences in turbine engine performance with and without the chemical dissociation effects for various fuel types over a range of combustor temperatures.
Snyder, Christopher A., Tran, Donald H.
core   +1 more source

Multi-objective performance optimization of turbofan engine for test run

Xibei Gongye Daxue Xuebao
Turbofan engines are widely used in military and civilian aviation fields due to their high propulsion efficiency and low fuel consumption rate, and their performance directly affects the safety and stability of flight mission.
WEI Bofei, WANG Yuting, GUO Zexuan, LIU Feng, XI Feng, SI Shubin, CAI Zhiqiang   +6 more
doaj   +1 more source

Health estimation of fan based on belief-rule-base expert system in turbofan engine gas-path

Advances in Mechanical Engineering, 2017
Fan is an important rotating part in turbofan engine gas-path. The health condition of fan has a great impact on the health status of the whole aero-engine. Based on belief-rule-base, a novel health estimation model is proposed for fan in turbofan engine
Xiaojing Yin, Zhanli Wang, Bangcheng Zhang, Zhijie Zhou, Zhi Gao   +4 more
doaj   +1 more source

Multiple Application Propfan Study (MAPS): Advanced tactical transport [PDF]

This study was conducted to ascertain potential benefits of a propfan propulsion system application to a blended wing/body military tactical transport. Based on a design cruise Mach no.
Liebeck, R. H., Mitchell, G. H., Mooiweer, A., Newton, F. C., Platte, M. M., Toogood, T. L., Wright, R. A.   +6 more
core   +1 more source

Computational Mechanics for Turbofan Engine Blade Containment Testing: Fan Case Design and Blade Impact Dynamics by Finite Element Simulations

Aerospace
The harsh environment during airplane take-off and flights with complex operating conditions require a high dynamic and impact resistance capability of airplane engines.
Víctor Tuninetti, Héctor Sepúlveda
doaj   +1 more source

Turbofan Engine Health Assessment Based on Spatial-Temporal Similarity Calculation. [PDF]

Sensors (Basel), 2023
Peng C, Hu X, Tang Z.
europepmc   +1 more source