The “normal component of upstream Mach Number” refers to the component of the Mach number that is perpendicular (normal) to a specified reference direction. In fluid dynamics and aerodynamics, it’s common to analyze the flow of a fluid or the motion of an object in terms of its velocity components along different directions. The Mach […]
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The Mach number behind a wave refers to the Mach number of a fluid or object at a specific point in a fluid flow immediately downstream (behind) of a shock wave. A shock wave is a type of propagating disturbance that occurs when a fluid (or gas) encounters a sudden change in its properties, such
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In flight mechanics, the coefficient of viscosity of air refers to the dynamic viscosity of air, which is a measure of its resistance to deformation or flow. Dynamic viscosity is a fundamental property of fluids that quantifies the internal friction or “stickiness” between layers of fluid as they move past each other. It is a
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The “Upstream Mach Number” refers to the Mach number of a fluid or object at a specific point in a fluid flow that is located upstream (i.e., in the direction against the primary flow of the fluid). The Mach number is a dimensionless quantity that characterizes the speed of an object or fluid relative to
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In flight mechanics, takeoff distance refers to the distance an aircraft requires to accelerate from a standstill on the runway, become airborne, and achieve a specified height above the ground during the takeoff phase of flight. It is a critical performance parameter that determines the minimum length of the runway needed for a safe takeoff.
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“Velocity for upstream” generally refers to the speed of a fluid or object in a direction opposite to the flow of the fluid or the movement of the object. In fluid dynamics, the term “upstream” refers to the direction against the primary flow of the fluid. u2​: is the velocity of upstream M2: is the
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In flight mechanics, the “time taken in climb phase” refers to the duration or elapsed time required for an aircraft to ascend from a specific initial altitude to a designated higher altitude during the climb phase of the flight. The climb phase is a critical part of a flight, where the aircraft gains altitude and
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The Mach angle is an important concept in fluid dynamics and aerodynamics that describes the angle at which a shock wave or an object moving through a fluid medium (such as air) produces a cone of compressed air. When an object travels through a fluid at a speed greater than the local speed of sound,
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The “velocity of the upper plate” refers to the speed at which the upper plate is moving relative to the stationary plate or relative to the fluid itself. The velocity of a fluid is a vector quantity, meaning it has both magnitude (speed) and direction. Similarly, the velocity of the upper plate would include both
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In flight mechanics, “time taken” refers to the duration or elapsed time required for an aircraft to complete a specific segment of flight or the entire flight from one point to another. It represents the time from the start of a particular phase of flight to its completion. Time taken is an essential parameter in
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