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4 days ago · All the 1st, 2nd, and 3rd stage engines are LOx/kerosene gas generator cycle engine, using gas generated from a fuel-rich gas generator to power the turbine. These engines employ an impulse turbine, utilizing the turbine gas injected through the nozzle ahead of the turbine rotor.
2 days ago · ASME J Eng Gas Turbines Pow er. 2000;122: 73-82. ... to compare their rotordynamic performance in a test rig with a rigid rotor supported by two GFBs and driven by an impulse turbine. The ...
3 days ago · Impulse turbine efficiencies vary from about 82% to 90%. The effective head of an impulse turbine is measured at the bottom of the pitch circle of the runner with no consideration given to the water level at the tailrace (because there is no draft tube). James B. Francis is the inventor of the reaction type of turbines.
4 days ago · Summary. Jet engines work on the "suck, squeeze, bang, blow" principle, using highly pressurized air and fuel combustion to generate thrust. Engine materials have evolved from steel to nickel-chromium superalloys, with advanced cooling techniques and atomic structure engineering for high-temperature performance.
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5 days ago · This document summarizes types of turbines including impulse turbines like Pelton and cross-flow turbines as well as reaction turbines like Kaplan and Francis turbines. It discusses the working principles and applications of different turbine types for water, steam, gas, and wind.
5 days ago · The gas turbine is capable of world-class fast cold starts and hot re-starts due to the light and stiff rotor with internal cooling air passages and free thermal expansion of rotor and casing parts during transients. Hydraulic Clearance Optimization (HCO), an active clearance control, ensures robustness and low turbine degradation at start-up.
1 day ago · As a non-contact method, vision-based measurement for vibration extraction and modal parameter identification has attracted much attention. In most cases, artificial textures are crucial elements for visual tracking, and this feature limits the application of vision-based vibration measurement on textureless targets. As a computation technique for visualizing subtle variations in videos, the video magnification technique can analyze modal responses and visualize modal shapes, but the ...
