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itsjustme
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About the lift formula i know its "F= Cl/2 P V^2 S" but my questions are what units do you use for each value (still SI?) and is there any formula for finding the caofiscient of lift, if not then how do you find it out?
thanks FredGarvin. you know jaap de vries i was actually thinking the same thing but i rearenged the equation and it read CL = 2L/(1*ro*S*V^2) anyway then i thought that if i measured the mass of the foil plus the straw (refer to diagram) and then timesed it by 9.8 i would get the ammoung of lift produced when the foil is neither climbing nor descending, after getting it in balance measure the airspeed at the foil.jaap de vries said:CL = L/(0.5*ro*S*V^2)
The lift formula is a mathematical equation used to calculate the amount of lift generated by an object, such as an airplane wing, as it moves through a fluid, such as air. It is calculated by multiplying the air density, airspeed, wing surface area, and the coefficient of lift.
SI units, or the International System of Units, are a standard set of measurements used in science and engineering. They are used in the lift formula because they provide a consistent and universal way to measure and calculate the various variables involved in lift, such as air density and speed.
The coefficient of lift is a dimensionless number that represents the efficiency of an object's shape in generating lift. It is influenced by factors such as the shape and angle of the object, and it determines the amount of lift that can be generated at a given airspeed. A higher coefficient of lift means more lift can be generated.
The lift formula can be applied to a variety of objects that move through a fluid, including airplane wings, helicopter blades, and even birds' wings. However, the specific values for the variables in the formula will vary depending on the shape and design of the object. For example, a bird's wing will have a different wing surface area and coefficient of lift than an airplane wing.
While the lift formula is a useful tool for predicting lift, it does have some limitations. It assumes that the fluid is behaving as a perfect, inviscid fluid, which is not always the case in real-world situations. Additionally, it does not take into account other factors that may affect lift, such as turbulence or airfoil shape. Therefore, the lift formula should be used as a general guide rather than an exact predictor of lift in all situations.