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  2. Bladelet (impeller) - Wikipedia

    en.wikipedia.org/wiki/Bladelet_(impeller)

    Used in centrifugal impeller terminology, bladelets are the more 'Metro' version of the common engineering description of splitters (shorter blades that do not extend into the centre of the impeller). The term is thought to have originated among the middle-upper-level management at medical device engineering companies, near the turn of the ...

  3. Specific speed - Wikipedia

    en.wikipedia.org/wiki/Specific_speed

    Specific speed is an index used to predict desired pump or turbine performance. i.e. it predicts the general shape of a pump's impeller. It is this impeller's "shape" that predicts its flow and head characteristics so that the designer can then select a pump or turbine most appropriate for a particular application.

  4. Components of jet engines - Wikipedia

    en.wikipedia.org/wiki/Components_of_jet_engines

    Very small flow compressors often employ two centrifugal compressors, connected in series. Although in isolation centrifugal compressors are capable of running at quite high pressure ratios (e.g. 10:1), impeller stress considerations limit the pressure ratio that can be employed in high overall pressure ratio engine cycles.

  5. Hydraulic clearance - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_clearance

    Leakage in narrow clearance, spool valve. Hydraulic clearance. Flow in narrow clearances are of vital importance in hydraulic system component design. The flow in a narrow circular clearance of a spool valve can be calculated according to the formula below if the height is negligible compared to the width of the clearance, such as most of the clearances in hydraulic pumps, hydraulic motors ...

  6. 'Dangerous territory': Trump's unsecured calls with world ...

    www.aol.com/dangerous-territory-trumps-unsecured...

    The State Department has been shut out of Donald Trump's calls with world leaders, raising concerns about confusion over U.S. foreign policy.

  7. Slip factor - Wikipedia

    en.wikipedia.org/wiki/Slip_factor

    Stodola's Equation: According to Stodola, it is the relative eddy that fills the entire exit session of the impeller passage. For a given flow geometry, the slip factor increases with the increase in the number of impeller blades, thus, accounts for one of the important parameter for losses.

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