Results 71 to 80 of about 4,545 (167)
Prediction of high speed propeller flow fields using a three-dimensional Euler analysis [PDF]
To overcome the limitations of classical propeller theory, a computer program, NASPROP-E, was developed which solves for the flow field surrounding a multibladed propeller and axisymmetric nacelle combination using a finite difference method.
Bober, L. J. +2 more
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Advanced turboprop noise prediction: Development of a code at NASA Langley based on recent theoretical results [PDF]
The development of a high speed propeller noise prediction code at Langley Research Center is described. The code utilizes two recent acoustic formulations in the time domain for subsonic and supersonic sources. The structure and capabilities of the code
Dunn, M. H., Farassat, F., Padula, S. L.
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[[alternative]]Flow Structures and Heat Transfer Enhancement in Fan-Flows with and without External Vortex Generators [PDF]
計畫編號：NSC91-2212-E032-007研究期間：200208~200307研究經費：384,000[[sponsorship ...
陳增源
core
Advanced Turboprop Project [PDF]
At the direction of Congress, a task force headed by NASA was organized in 1975 to identify potential fuel saving concepts for aviation. The result was the Aircraft Energy Efficiency (ACEE) Program implemented in 1976.
Hager, Roy D., Vrabel, Deborah
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Effect of AFT Rotor on the Inter-Rotor Flow of an Open Rotor Propulsion System [PDF]
The effects of the aft rotor on the inter-rotor flow field of an open rotor propulsion rig were examined. A Particle Image Velocimetry (PIV) dataset that was acquired phase locked to the front rotor position has been phase averaged based on the relative ...
Slaboch, Paul E. +2 more
core +1 more source
Proceedings of the World Molecular Imaging Congress 2021, October 5-8, 2021: General Abstracts. [PDF]
Mol Imaging Biol, 2021 europepmc +1 more source
Propeller propulsion integration, phase 1 [PDF]
A bibliography was compiled of all readily available sources of propeller analytical and experimental studies conducted during the 1930 through 1960 period.
Bennett, G. +4 more
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Wake and Potential Interference of Contra-Rotating Small-Sized Axial Fan at Design Flow Rate
, 2016 Small-sized axial fans are used as air coolers for electric equipment. There is a strong demand for high pressure and large flow rate of fans according to the increase of quantity of heat from electric devices. Therefore, high rotational speed design is conducted, although, it causes the deterioration of the efficiency and increase of noise.
Shigemitsu, Toru +2 more
openaire +1 more source