Subjective response to synthesized flight noise signatures of several types of V/STOL aircraft [PDF]
Subjective response to far field noise characteristics of V/STOL aircraft sized to carry 60 passengers over 500 mile ...
Hinterkeuser, E. G., Sternfeld, H., Jr.
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Advanced turboprop technology development [PDF]
The efficiency of high-speed turboprop propulsion systems is considered with emphasis on fuel savings. Specific topics discussed include: (1) high efficiency and low noise of propeller design; (2) fuselage noise attenuation; (3) propeller and gear box ...
Bencze, D. P. +2 more
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Fuel conservation merits of advanced turboprop transport aircraft [PDF]
The advantages of a propfan powered aircraft for the commercial air transportation system were assessed by the comparison with an equivalent turbofan transport.
Revell, J. D., Tullis, R. H.
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Deep learning approach for prediction of exergy and emission parameters of commercial high by-pass turbofan engines. [PDF]
Environ Sci Pollut Res Int, 2023 Dursun OO, Toraman S, Aygun H.
europepmc +1 more source
Test stand performance of a convertible engine for advanced V/STOL and rotorcraft propulsion [PDF]
A variable inlet guide vane (VIGV) convertible engine that could be used to power future high-speed V/STOL and rotorcraft was tested on an outdoor stand.
Mcardle, Jack G.
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Preliminary Evaluation of a Turbine/Rotary Combustion Compound Engine for a Subsonic Transport [PDF]
The fuel consumption of a modern compound engine with that of an advanced high pressure ratio turbofan was compared. The compound engine was derived from a turbofan engine by replacing the combustor with a rotary combustion (RC) engine. A number of boost
Civinskas, K. C., Kraft, G. A.
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State-of-the-art of turbofan engine noise control [PDF]
The technology of turbofan engine noise reduction is surveyed. Specific topics discussed include: (1) new fans for low noise; (2) fan and core noise suppression; (3) turbomachinery noise sources; and (4) a new program for improving static noise testing ...
Groeneweg, J. F., Jones, W. L.
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A Spatio-Temporal Attention Mechanism Based Approach for Remaining Useful Life Prediction of Turbofan Engine. [PDF]
Comput Intell Neurosci, 2022 Peng C, Wu J, Tang Z, Yuan X, Li C.
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Preliminary study of optimum ductburning turbofan engine cycle design parameters for supersonic cruising [PDF]
The effect of turbofan engine overall pressure ratio, fan pressure ratio, and ductburner temperature rise on the engine weight and cruise fuel consumption for a mach 2.4 supersonic transport was investigated.
Fishbach, L. H.
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DEAN: A program for dynamic engine analysis [PDF]
The Dynamic Engine Analysis program, DEAN, is a FORTRAN code implemented on the IBM/370 mainframe at NASA Lewis Research Center for digital simulation of turbofan engine dynamics.
Melcher, K. J., Sadler, G. G.
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