Author name: Kalpana Southri

Angle between the oncoming airflow and the chord line of the wing. The chord line is an imaginary straight line that connects the leading edge to the trailing edge of the wing. The angle of attack is a critical parameter that describes how the wing interacts with the air. αw: Angle of attack of the […]

In flight mechanics and aerodynamics, the drag coefficient (often denoted as Cd or Cdw) is a dimensionless number that quantifies the aerodynamic drag experienced by an aircraft or any other object moving through a fluid, such as air. It is a critical parameter used to describe the resistance an object encounters as it moves through

In flight mechanics, the change in the deflection angle of a control surface (Δδ) refers to the adjustment or movement of a specific control surface on an aircraft from its neutral or trimmed position. Control surfaces are movable aerodynamic surfaces on an aircraft’s wings, tail, or other parts that are used to control and maneuver

Uninstalled Drag Coefficient (CDu​): CDu​ is a dimensionless coefficient that characterizes the aerodynamic drag of an aircraft in its clean or baseline configuration, meaning it has no external attachments, such as external fuel tanks, bombs, or other stores. It represents the resistance force generated by the aircraft’s airframe, including the fuselage, wings, tail, and other

In flight mechanics and aircraft design, the term “fuselage” refers to the central structure of an aircraft that houses the cockpit, passenger or cargo compartments, and other essential components. It is the main body of the aircraft, and its design varies depending on the type and purpose of the aircraft. (CD0​)b​: This represents the total

This coefficient represents the overall zero-lift drag of the entire aircraft, including contributions from both the wing and the body (fuselage). It characterizes the inherent drag of the aircraft when it is at zero angle of attack (not generating lift) and is in level, unaccelerated flight. (CD0​)wb: This represents the total zero-lift drag coefficient of

Thrust Required During Level Flight: This is the force or thrust that the aircraft’s engines must produce to balance the forces acting on the aircraft in level flight. In level flight, there are several forces acting on the aircraft. Tt​: This represents the thrust required during level flight. It’s the amount of thrust needed to

Thrust Force (Tc​): This represents the force generated by the aircraft’s engines during the climb phase. It is the force that propels the aircraft forward and upward, overcoming various resistance forces, including aerodynamic drag and the component of gravitational force that opposes the climb. Tc​ is the thrust force during the climb phase. Dc​ is

The rate of change of altitude with respect to time during the climb phase, often referred to as the climb rate or rate of climb (ROC), is a fundamental parameter in flight mechanics. It represents how quickly an aircraft is ascending or descending vertically and is typically expressed in units such as feet per minute

The rate of climb (ROC) in flight mechanics is a measure of how quickly an aircraft is ascending vertically. It quantifies the vertical speed of the aircraft as it climbs through the air. The rate of climb is usually expressed in units such as feet per minute (ft/min) or meters per second (m/s). Vrc​: This