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To Mars through LEO: How commercial space travel will change exploration‐enabling research
Experimental Physiology, EarlyView.
Christopher Puhl, Michail Magkos
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Transonic radial compressor inlet design
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2003The design of radial compressor inlets for transonic flow is examined. A theoretical model [1] quantifies the losses in the tip sections caused by the choke margin (incidence) and the blockage of the blades. It identifies clear design rules for the tip sections: to achieve the highest efficiency, these require minimum blockage (low blade thickness and
A Lohmberg, M Casey, S Ammann
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Transonic fan and compressor design
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1999Transonic fans and compressors are now widely used in gas turbine engines because of their benefits in terms of compactness and reduced weight and cost. However, careful and precise design is essential if high levels of performance are to be achieved.
W. J. Calvert, R. B. Ginder
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Unsteady Losses in Transonic Compressors
Journal of Engineering for Gas Turbines and Power, 1985A newly developed probe has been used to measure the time-resolved total temperature and pressure in a transonic compressor. The investigation revealed the presence of large fluctuations in the blade-to-blade core flow occurring at a frequency of three to four times blade passing.
W. F. Ng, A. H. Epstein
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Recent advances in transonic axial compressor aerodynamics
Progress in Aerospace Sciences, 2013Transonic axial flow compressors are fundamental components in aircraft engines as they make it possible to maximize pressure ratios per stage unit. This is achieved through a careful combination of both tangential flow deflections and, above all, by taking advantage of shock wave formation around the rotor blades.
Biollo Roberto, BENINI, ERNESTO
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Optimization of rough transonic axial compressor
Aerospace Science and Technology, 2018Abstract The influence of wall roughness on the performance of the axial transonic compressor stage was investigated with different values of roughness added to the blade, hub and shroud sections. The dimensionless sand-grain roughness model was used to capture the roughness effect and the results indicated that the increment of both end wall and ...
Zhihui Li, Yanming Liu
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Shock Structure in Transonic Compressor Rotors
AIAA Journal, 1979The inadequacy of axisymmetric theory in modeling the structure of the shock system in a transonic compressor rotor is shown with a simple model. A more accurate model for the flow near the sonic radius is proposed, which is supported by some flow visualization data and three-dimensional computations.
A. H. Epstein +2 more
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AIAA Journal, 1980
Introduction B the term transonic compressor we mean an axial flow compressor in which the inlet flow Mach number, relative to the rotating blades, varies from below unity at radii near the inner casing or hub to values substantially above unity at radii near the blade tips.
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Introduction B the term transonic compressor we mean an axial flow compressor in which the inlet flow Mach number, relative to the rotating blades, varies from below unity at radii near the inner casing or hub to values substantially above unity at radii near the blade tips.
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Optimization of Robust Transonic Compressor Blades
Volume 2C: Turbomachinery, 2016Surface degradation in an axial compressor during its lifetime can have a considerable adverse effect on its performance. The present study investigates how the optimized design of compressor blades in a single compressor stage is affected by considering a high level of surface roughness on a level representative of a long period of in-service use.
Marcus Lejon +4 more
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Design of Aerodynamically Balanced Transonic Compressor Rotors
Journal of Turbomachinery, 2023Abstract This paper describes a simple and efficient physics-based method for designing optimal transonic multistage compressor rotors. The key to this novel method is that the spanwise variation of the parameter which controls the three-dimensional shock structure, the area ratio between the throat and the inlet, “Athroat /Ainlet”, is ...
Demetrios Lefas, Robert J. Miller
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