Thermal choking is a phenomenon that occurs when a system’s performance is limited by its ability to dissipate heat. The formula for thermal choking can vary depending on the specific system and its components, but in general, it involves factors such as thermal resistance, heat generation rate, ambient temperature, and heat dissipation capacity. One common […]
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Critical Fiber Volume Fraction is a Minimum fibers to prevent crack propagation.The formula is given by: Where: Vf∗​ is the critical fiber volume fraction. KIC​ is the fracture toughness of the composite material. σf​ is the tensile strength of the fibers. L is the characteristic length associated with crack growth.
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The formula for calculating flow choking in a converging-diverging nozzle, often referred to as the critical flow condition, is typically given by where: γ is the specific heat ratio (ratio of specific heats), R is the gas constant, and T is the temperature.
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Matrix Strength Efficiency Factor is a Composite matrix strength relative to individual.The formula is given by: Where: η is the matrix strength efficiency factor. σmatrix, composite​ is the strength of the matrix in the composite material. σmatrix, individual​ is the strength of the matrix material individually.
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The speed of sound Calculator refers to the rate at which sound waves propagate through a medium. It represents the velocity at which disturbances or vibrations in the medium, caused by a source such as a vibrating object or a pressure variation, travel from one point to another. Where: v is the speed of sound.
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Strain Energy Release Rate is an Energy per unit area during crack propagation.The formula is given by: Where: G is the strain energy release rate. dW is the change in potential energy. dA is the change in crack area.
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The specific energy formula typically refers to the energy stored per unit mass of a substance. For example, in the context of batteries, the specific energy formula is: Where: E is the energy stored (in joules, for example). m is the mass of the substance (in kilograms, for example)
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The efficiency of a rocket motor can be calculated using the specific impulse and the gravitational constant with the formula: Where: Isp​ is the specific impulse (measured in seconds), g is the standard acceleration due to gravity (approximately 9.81 m/s² on Earth), ve​ is the exhaust velocity of the rocket motor.
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In laminar flow, the fluid moves according to Newton’s law of viscosity, which states that the shear stress (Ï„) between adjacent fluid layers is directly proportional to the velocity gradient (du/dy) perpendicular to the direction of flow and the dynamic viscosity (μ) of the fluid: Where, Ï„ is the shear stress, μ is the dynamic
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Effective exhaust velocity (Ve) is a measure used in rocket propulsion to describe the efficiency of a rocket engine. It represents the velocity at which the rocket’s exhaust gases leave the engine relative to the rocket itself, taking into account the effects of pressure and temperature within the engine. It is a crucial parameter in
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