The pressure ratio across the wave (p2/p1) is a measure of the change in pressure that occurs when a fluid flows across a wave, such as a shock wave or an expansion wave. The pressure ratio is defined as the ratio of the pressure behind the wave (p2) to the pressure ahead of the wave […]
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Cruise Speed for Maximum Endurance (Vmax endurance​) is the airspeed at which an aircraft can achieve its maximum endurance, which is the ability to remain in the air for the longest possible time while consuming the least amount of fuel. This is an important parameter in aircraft design, especially for missions that require extended loitering or
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The drag coefficient for a thin flat plate is a dimensionless quantity that measures the drag or resistance of a thin flat plate in a fluid environment, such as air or water. The drag coefficient depends on the shape, size, and angle of attack of the plate, as well as the Reynolds number and the
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The landing distance of an aircraft is the distance it requires to decelerate, descend, and touch down safely on a runway or landing surface during a landing maneuver. It is an essential parameter in aircraft design and operation, as it determines the runway length needed for a safe landing. The formula for calculating landing distance
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The lift coefficient for a thin flat plate is a dimensionless quantity that measures the lift force per unit area and per unit dynamic pressure acting on the plate. The lift force is the component of the aerodynamic force that is perpendicular to the direction of the flow. Normal force coefficient (cn) Pressure coefficient for
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The normal force coefficient for a thin flat plate is a dimensionless quantity that measures the ratio of the normal force to the dynamic pressure times the reference area of the plate. The normal force is the component of the aerodynamic force that is perpendicular to the direction of the flow. Normal force coefficient (cn)
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The pressure coefficient for the flat plate bottom surface (Cp3) is a dimensionless quantity that measures the relative change in pressure on the lower surface of the plate due to the oblique shock wave that forms when the plate is at a small angle of attack to the supersonic or hypersonic flow. Pressure coefficient for
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The pressure coefficient for the flat plate upper surface under the expansion wave (Cp2) is a dimensionless quantity that measures the relative change in pressure on the upper surface of the plate due to the expansion wave that forms when the plate is at a small angle of attack to the supersonic or hypersonic flow. Â
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The takeoff distance of an aircraft is the distance it requires to accelerate from a standstill on the runway to a specified speed and become airborne. It is a critical parameter in aircraft design and operation, as it determines the runway length needed for a safe takeoff. The formula for calculating takeoff distance (STO​) is
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Specific Excess Power (Psp​) is a parameter used in aircraft performance analysis. It measures the excess power available to an aircraft on a per-unit-mass basis. Specifically, it represents the difference between the engine’s thrust (T) and the power required to maintain a certain flight condition. The formula for calculating Specific Excess Power (Psp​) is as
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