Results 111 to 120 of about 769,162 (329)

Energy efficient engine program contributions to aircraft fuel conservation [PDF]

Significant advances in high bypass turbofan technologies that enhance fuel efficiency have been demonstrated in the NASA Energy Efficient Engine Program.
Batterton, P. G.
core   +1 more source

Dynamic Analysis and Experimental Research on the Cantilever High Speed Rotor of Turbofan Engine

, 2021
Weijian Nie, Wangqun Deng, Sheng Wan Yuan, Yanong Chen   +3 more
openalex   +1 more source

Ground-runup tests of acoustically treated inlets and fan ducts [PDF]

Ground performance tests on noise intensity of turbofan engine ducts modified by acoustic ...
Marsh, A. H., Thompson, J. D., Zwieback, E. L.   +2 more
core   +1 more source

The economic impact of drag in general aviation [PDF]

General aviation aircraft fuel consumption and operating costs are closely linked to drag reduction methods. Improvements in airplane drag are envisioned for new models; their effects will be in the 5 to 10% range.
Neal, R. D.
core   +1 more source

Quiet engine program flight engine design study [PDF]

The results are presented of a preliminary flight engine design study based on the Quiet Engine Program high-bypass, low-noise turbofan engines. Engine configurations, weight, noise characteristics, and performance over a range of flight conditions ...
Klapproth, J. F., Neitzel, R. E., Seeley, C. T.   +2 more
core   +1 more source

Analysis and verification of vibration isolation performance of engine mount based on low-frequency approximation method

Journal of Low Frequency Noise, Vibration and Active Control
At present, most of the turbofan engine use the articulated link mount to connect the engine to the wing. The mechanical modeling, analysis and experimental research of articulated link mount are important means in the development of engine mount.
Wang Jianqiang, Ren Gexue, Chen Yonghui, Yan Qun, Zhou Runeng, Chen Chunlan, Dong wanyuan   +6 more
doaj   +1 more source

imulation of the flow in the fan stage of a turbofan engine with annular grooves casing treatment

Авіаційно-космічна техніка та технологія
The subject of this study is the working process of the axial fan under the annular groove casing treatment of the turbofan engine. The object of the present study is to investigate the fan impeller of a turbofan engine subjected to an annular groove ...
Andrii Duliepov, Anton Balalaiev
doaj   +1 more source

Time Delay Analysis of Turbofan Engine Direct and Indirect Combustion Noise Sources [PDF]

, 2008
Jeffrey Hilton Miles
openalex   +1 more source

Evaluation of an F100 multivariable control using a real-time engine simulation [PDF]

A multivariable control design for the F100 turbofan engine was evaluated, as part of the F100 multivariable control synthesis (MVCS) program. The evaluation utilized a real-time, hybrid computer simulation of the engine and a digital computer ...
Skira, C., Soeder, J. F., Szuch, J. R.
core   +1 more source

External resistance of a gas turbine engine nacelle with boundary layer extraction

Авіаційно-космічна техніка та технологія
When creating new or modernizing existing aircraft models, a lot of attention is paid to the economic indicators of their operation. A parameter characterizing these indicators is the fuel consumption of gas turbine engines.
Yurii M. Tereshchenko, Yurii Yu. Tereshchenko, Valery Ratynskyi, Oleg Chumak   +3 more
doaj   +1 more source