Results 91 to 100 of about 17,697 (215)

NASA Quiet Clean General Aviation Turbofan (QCGAT) program status [PDF]

The suitability of large engine technology to reduce noise, emissions, and fuel consumption of small turbine engines and develop new technology where required is determined.
Bresnahan, D. L., Sievers, G. K.
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

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

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

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

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

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

Gaseous exhaust emissions from a JT8D-109 turbofan engine at simulated cruise flight conditions [PDF]

Gaseous emissions from a JT8D-109 turbofan engine were measured in an altitude facility at four simulated cruise flight conditions: Mach 0.8 at altitudes of 9.1, 10, 7, and 12.2 km and Mach 0.9 at 10.7 km.
Diehl, L. A., Holdeman, J. D.
core   +1 more source

Design and performance of duct acoustic treatment [PDF]

, 1991
The procedure for designing acoustic treatment panels used to line the walls of aircraft engine ducts and for estimating the resulting suppression of turbofan engine duct noise is discussed.
Kraft, R. E., Motsinger, R. E.
core   +1 more source

Turboprop cargo aircraft systems study [PDF]

The effects of using advanced turboprop propulsion systems to reduce the fuel consumption and direct operating costs of cargo aircraft were studied, and the impact of these systems on aircraft noise and noise prints around a terminal area was determined.
Hewell, J. G., Jr., Lindenbaum, S. P., Muehlbauer, J. C., Randall, C. C., Searle, N., Stone, R. G., Jr.   +5 more
core   +1 more source

Effect of afterburner lights and inlet unstarts on a mixed compression inlet turbofan engine operating at Mach 2.5 [PDF]

Data are presented to show the response of an uncontrolled inlet to afterburner lightoff disturbances when a mixed-compression inlet is coupled to a turbofan engine.
Batterton, P. G., Baumbick, R. J., Daniele, C. J.   +2 more
core   +1 more source