Author name: Akash Babu S L

Nose-down Pitching Moment Due to Thrust  represents the contribution to the aircraft’s pitching moment caused by the thrust produced by the engines   CMthrust​​ is the nose-down pitching moment due to thrust, T is thrust, q is dynamic pressure, S is wing reference area, d is the distance from the center of gravity to the […]

The Fuel Flow Rate (m˙fuel​) is a critical parameter in aircraft design that represents the rate at which fuel is consumed by the aircraft’s engines m˙fuel​ is the fuel flow rate, T is the thrust produced by the aircraft’s engines, specific fuel consumptionspecific fuel consumption is the amount of fuel consumed per unit of thrust.

Static Stability Margin represents the distance between the center of gravity and the aerodynamic center normalized by the mean aerodynamic chord.   X CG​ is the longitudinal position of the center of gravity, X AC​ is the longitudinal position of the aerodynamic center, cˉ is the mean aerodynamic chord.

Rolling Resistance Force is the force opposing the motion of an aircraft as it moves along the ground.   Frr​ is the rolling resistance force, μrr​ is the coefficient of rolling resistance, W is the weight of the aircraft.

The Prandtl number (Pr) is a dimensionless parameter that characterizes the relative importance of molecular diffusion to heat conduction in a fluid. It is widely used in fluid dynamics and heat transfer analyses.   Pr is the Prandtl number, μ is the dynamic viscosity of the fluid, cp​ is the specific heat at constant pressure,

The Strouhal number is a non-dimensional parameter that relates the frequency of vortex shedding to the velocity of the flow and a characteristic dimension of the object   St is the Strouhal number, f is the frequency of vortex shedding, D is a characteristic dimension (such as diameter or chord length), V is the velocity

The Radius of Curvature (ρ) in the bending of beams is a measure of the curvature of a beam’s neutral axis   ρ is the radius of curvature. κ is the curvature of the beam.

The Plastic Section Modulus (Z) is a key parameter used in plastic analysis of structures, particularly in the design of structural components that may undergo plastic deformation   Z is the Plastic Section Modulus. M yield​ is the yield moment or the moment at which plastic deformation begins. σ yield​ is the yield stress of

Specific strength is a material property that indicates how strong a material is relative to its weight or density.   R is the specific strength. σ ultimate​ is the ultimate tensile strength of the material. ρ is the density of the material.