The term “freestream total pressure” (p0,∞) refers to the total pressure of a fluid in the undisturbed flow far away from any significant sources of pressure changes or disturbances. It represents the pressure that the fluid would experience if it were brought to rest isentropically (without any losses due to friction or heat transfer) from […]
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In flight mechanics, “climb speed” refers to the rate at which an aircraft gains altitude vertically, often expressed in units of velocity (such as meters per second or feet per minute). Climb speed is a key parameter that describes the aircraft’s ability to ascend or descend within a given time frame. It’s an important concept
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The characteristic Mach number, often denoted as M∗, is a dimensionless parameter used in fluid dynamics to describe the behavior of compressible flows, particularly when analyzing the effects of compressibility on fluid properties. Characteristic Mach number (M*) Local Mach number (M) Specific heat ratio (γ)
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“lift” refers to the force that counteracts the weight of an aircraft and allows it to maintain level flight. Level flight occurs when an aircraft is flying horizontally at a constant altitude, neither climbing nor descending. ρ (rho) represents the air density. V0 represents the velocity of the aircraft relative to the air. S represents
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The local Mach number (M) is a dimensionless parameter used in fluid dynamics to describe the relative velocity of a fluid flow compared to the local speed of sound in that fluid at a specific point. Specific heat ratio (γ) Characteristic Mach Number (M*) Local Mach Number (M)
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The speed of sound at sonic conditions, often denoted as a∗, refers to the speed of sound in a fluid when the fluid flow is precisely at the speed of sound, which is also known as “sonic velocity.” Speed of sound at sonic condition (a*) in m/s Temperature at sonic conditions (T*) in K Specific
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The characteristic Mach number, often denoted as M*, is a dimensionless parameter used in fluid dynamics to describe the behavior of compressible flows, particularly when analyzing the effects of compressibility on fluid properties. The characteristic Mach number, M*, is used to determine the degree of compressibility effects in a fluid flow. Characteristic Mach number (M*)
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The speed of sound under isothermal conditions, often denoted as aT, refers to the rate at which pressure waves or disturbances propagate through a medium when the temperature of the medium remains constant. In other words, it’s the speed at which sound travels through a substance while experiencing no temperature change. aT is the
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The isothermal compressibility (τT) is a thermodynamic property that measures how much the volume of a substance changes in response to a change in pressure while maintaining temperature constant. It’s important to note that the isothermal compressibility is usually not a constant value for most substances; it can vary with different conditions and depends on
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It is the relationship between a constant (c1), specific volume (v), pressure (p), and the specific heat ratio (γ). Express a relationship between properties of a gas, possibly in a specific scenario or under certain assumptions. The specific heat ratio (γ) plays a role in determining the behavior of the gas. c1 is a constant.
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