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In actual turbine, nozzle governing is applied only to the first stage whereas the subsequent stages remain unaffected. [1] Since no regulation to the pressure is applied, the advantage of this method lies in the exploitation of full boiler pressure and temperature. Figure 2 shows the mechanism of nozzle governing applied to steam turbines. [2]
The G&C section then sends steering commands to the thrust vector control (TVC) unit of each succeeding motor stage to keep the rocket on course. The incorporation of current-technology electronics with each generation of the guidance system has resulted in a smaller, more capable, and less vulnerable system.
Propelling nozzles may have a fixed geometry, or they may have variable geometry to give different exit areas to control the operation of the engine when equipped with an afterburner or a reheat system. When afterburning engines are equipped with a C-D nozzle the throat area is variable.
This results in a steam pressure drop and velocity increase as steam moves through the nozzles. Nozzles move due to both the impact of steam on them and the reaction due to the high-velocity steam at the exit. A turbine composed of moving nozzles alternating with fixed nozzles is called a reaction turbine or Parsons turbine.
A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
Tokyo-based Space One was founded in 2018 by Canon Electronics, IHI's aerospace unit, construction firm Shimizu and a state-backed bank, with the goal of launching 20 small rockets a year by 2029 ...
An electronically controlled unit injector (EUI) sometimes referred to as a mechanical electronic unit injector (MEUI) is a unit injector (UI) with electronic control. It performs the same function as a conventional unit injector in an internal combustion engine , such as in an on-road or off-road vehicle or a diesel-electric locomotive .
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