Measured mass flow ([??]), inlet pressure ([P.sub.in]), inlet temperature ([T.sub.in]), outlet pressure ([P.sub.out]), outlet temperature ([T.sub.out]), and shaft speed ([N.sub.phys]) or impeller tip speed
(U, and impeller diameter [D.sub.2]) are used with ratio of specific heats ([gamma]) for air to calculate corrected speed ([N.sub.C]), corrected air flow ([[??].sub.corr]), pressure ratio ([[pi].sub.C]), and isentropic efficiency ([[eta].sub.C]), using Equations 1 through 4.
Inherent to their design, variable speed drive compressors have an optimum tip speed
range where they operate most efficiently.
where [rho] is air density (kg/[m.sup.3]), R represents blade radius (m), v is wind speed (m/s), and [C.sub.p] is power conversion efficiency which is nonlinear function of tip speed
ratio [lambda] and pitch angle [beta].
Ratio (TSR) related to the number of blades used in the wind turbine.
The designed rotor tip speed
of the XH-59A pure helicopter configuration is 650 ft/sec.
The rated rotational speed is v = 10 m/s; the tip speed
of blade is v = 85 m/s.
They show that the usage of different fluids significantly influences the drag force acting on the cantilever and confirm that the drag force dependence on tip speed
is essentially linear in nature.
Based on earlier findings, it was determined that the energy cost of the two-bladed wind turbine was somewhat lower than that of the three-bladed with a lower tip speed
The wind turbine is characterized by dimensional curves of the power coefficient (Cp) as a function of both the tip speed
ratio (X) and the blade pitch angle(B).