## Is NACA 0015 symmetrical?

NACA 0015 is symmetrical and NACA 4415 is unsymmetrical in shape. Consequently, they have big one-of-a-kind in aerodynamic traits at the side of widespread differences of their utility and performance.

### What is the airfoil pressure distribution?

An airfoil is a 2-dimensional wing section that represents critical wing performance characteristics. The pressure distribution and lift coefficient are important parameters that characterize the behavior of airfoils. The pressure distribution is directly related to the lift generated by airfoils.

#### What is mean camber line?

The mean camber line is an imaginary line which lies halfway between the upper surface and lower surface of the airfoil and intersects the chord line at the leading and trailing edges.

What effects pressure distribution of an airfoil?

Velocity and pressure are dependent on each other – Bernoulli’s equation says that increasing the velocity decreases the local pressure and vice versa. Thus the higher velocities on the upper airfoil side result in lower than ambient pressure whereas the pressure on the lower side is higher that the ambient pressure.

What NACA 0012?

NACA 0012 mean that there is no camber i.e. zero camber is present, and it has the maximum thickness of the airfoil at 12% of the chord from the leading edge. 2.

## What is the NACA 0015?

The NACA 0015 is a symmetrical airfoil with a 15% thickness to chord ratio. Symmetric airfoils are used in many applications including aircraft vertical stabilizers, submarine fins, rotary and some fixed wings. A 2D wing section is analyzed at low speeds for lift, drag and moment characteristics.

### What is the lift and drag coefficient of NACA 0015 airfoil?

Lift and drag coefficient of NACA 0015 airfoil at different attack angle between 0° and 20° were measurement. Also, the lift and drag coefficient were obtained as numerical with FLUENT programs for the same conditions. In numerical analysis C mesh used as shown in Fig. 3-a and Fig. 3-b.

#### What is laminar flow around NACA 0015 airfoil?

The flow was laminar around the NACA 0015 airfoil between 0° to 14° angle of attack. Laminar flow was transition turbulence flow and pressure distribution changed around 16° angle of attack so lift coefficient began decrease. It was shown in Fig. 6.