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  2. Velocity triangle - Wikipedia

    en.wikipedia.org/wiki/Velocity_triangle

    Velocity triangles may be drawn for both the inlet and outlet sections of any turbomachine. The vector nature of velocity is utilized in the triangles, and the most basic form of a velocity triangle consists of the tangential velocity, the absolute velocity and the relative velocity of the fluid making up three sides of the triangle.

  3. Euler's pump and turbine equation - Wikipedia

    en.wikipedia.org/wiki/Euler's_pump_and_turbine...

    The color triangles formed by velocity vectors u,c and w are called velocity triangles and are helpful in explaining how pumps work. c 1 {\displaystyle c_{1}\,} and c 2 {\displaystyle c_{2}\,} are the absolute velocities of the fluid at the inlet and outlet respectively.

  4. Degree of reaction - Wikipedia

    en.wikipedia.org/wiki/Degree_of_Reaction

    The velocity triangle [2] (Figure 2.) for the flow process within the stage represents the change in fluid velocity as it flows first in the stator or the fixed blades and then through the rotor or the moving blades. Due to the change in velocities there is a corresponding pressure change. Figure 2. Velocity Triangle for fluid flow in turbine

  5. Piston motion equations - Wikipedia

    en.wikipedia.org/wiki/Piston_motion_equations

    For rod length 6" and crank radius 2" (as shown in the example graph below), numerically solving the acceleration zero-crossings finds the velocity maxima/minima to be at crank angles of ±73.17615°. Then, using the triangle law of sines, it is found that the rod-vertical angle is 18.60647° and the crank-rod angle is 88.21738°. Clearly, in ...

  6. Delta-v - Wikipedia

    en.wikipedia.org/wiki/Delta-v

    Delta-v (also known as "change in velocity"), symbolized as and pronounced /dɛltə viː/, as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver.

  7. Kinematics - Wikipedia

    en.wikipedia.org/wiki/Kinematics

    The area of a triangle is where is the base and is the ... Multiplying by the operator [S], the formula for the velocity v P takes the form: ...

  8. Angular velocity - Wikipedia

    en.wikipedia.org/wiki/Angular_velocity

    The angular velocity of the particle at P with respect to the origin O is determined by the perpendicular component of the velocity vector v.. In the simplest case of circular motion at radius , with position given by the angular displacement () from the x-axis, the orbital angular velocity is the rate of change of angle with respect to time: =.

  9. Root mean square - Wikipedia

    en.wikipedia.org/wiki/Root_mean_square

    The corresponding formula for a continuous function ... Triangle wave = ... speed is defined as the scalar magnitude of velocity. For a stationary gas, the average ...