Results 31 to 40 of about 28,166 (195)
The Wright Brothers: First Aeronautical Engineers and Test Pilots [PDF]
, 2003 Sir George Cayley invented the conventional configuration of the airplane at the turn of the 19th century. Otto Lilienthal realized that building a successful aircraft meant learning how to fly; he became the first hang glider pilot and also the first ...
Culick, F. E. C.
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Aerodynamic Analysis and Three-Dimensional Redesign of a Multi-Stage Axial Flow Compressor
Energies, 2016 This paper describes the introduction of three-dimension (3-D) blade designs into a 5-stage axial compressor with multi-stage computational fluid dynamic (CFD) methods.
Tao Ning +4 more
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Journal of Applied Fluid Mechanics, 2020 The stability range of the gas turbine engine compressors is being challenged in the modern days due to the intention of increasing per stage maximum loading. Casing treatment has been widely adopted as a realistic passive flow control means to improve the stall margin with a slight decrease of efficiency at the same time by various grooves of which ...
N. Ahmad +4 more
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Stall Margin Improvement of an Axial Flow Fan with End Wall Injection and Suction.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1999 The experimental studies are conducted to reveal the mechanism of stall margin improvement of an axial flow fan by injection or suction from the end wall. In case of injection, the largest improvement is obtained by the injection at about 0.14∼0.21 times axial chord length downstream from leading edge.
Kiyoshi NISHIOKA +3 more
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Proceedings of Global Power & Propulsion Society, 2020 The stall margin of tip-critical axial compressors can be improved by using circumferential casing grooves. From previous studies, in the literature, the stall margin improvement due to the casing grooves can be attributed to the reduction of the near casing blockage.
Ahmad Fikri Mustaffa +1 more
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Cogent EngineeringA numerical analysis is conducted to assess the impact of slotted casing treatments, dimples, and surface roughness on the performance of an axial flow fan. Five configurations were evaluated: baseline (without any flow control), axial slots, axial slots
Gautham A. Amin +2 more
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Influence of Clearances in Variable Guide Vanes and Stators on the Performance of a Multi-stage Compressor and Its Flow Control [PDF]
Journal of Applied Fluid MechanicsIn pursuit of enhanced accuracy in the performance prediction and optimization of high-load compressors, this study emphasizes the significance of empirically measured clearance values associated with variable guide vanes and stators in engineering ...
L. Huang, W. Chu, H. Zhang, Z. Guo
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International Journal of Rotating Machinery, 2017 This paper presents the first report on surge extension with steam injection through both experimental and numerical simulation. The experimental section covers the test facility, instrumentation, and prestall modes comparison with and without steam ...
Chuang Gao +5 more
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IEEE Access, 2019 To provide the desired thrust and prevent the engine from exceeding any safety or operational limits, a min–max selector with linear limiters is widely employed in current aircraft engine control logic.
Bing Yu +3 more
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Control of High-Load Compressor Stator Corner Flow by Blade Slotting
International Journal of Aerospace EngineeringFlow separation often occurs in the stator corner of a compressor, especially in a highly loaded compressor. Therefore, there are multiple methods for flow control, such as blade slotting, which uses the pressure difference between the pressure surface ...
Enbo Liu, Zhenggui Zhou, Huan Zheng
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