# What is the ideal airfoil for supersonic flight?

## What is the ideal airfoil for supersonic flight?

Double-Wedge and Bi-convex airfoils are the most common designs used in supersonic flights. Wave drag is the simplest and most important component of the drag in supersonic flow flight regions.

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## How do supersonic wings work?

When an aircraft approaches the speed of sound, the airflow over the wing reaches supersonic speed before the airplane itself does, and a shock wave forms on the wing. The airflow behind the shock wave breaks up into a turbulent wake, increasing drag.

What is the most aerodynamic shape supersonic?

The optimum shape depends on the velocity of the object. For speeds lower than the speed of sound, the most aerodynamically efficient shape is the teardrop.

### What was the first plane take to supersonic speed?

The first aircraft to fly at supersonic speeds was a Bell X-1 rocket-powered research plane piloted by Major Charles E. Yeager of the U.S. Air Force on October 14, 1947.

### What is supersonic fluid?

[¦sü·pər¦sän·ik ′flō] (fluid mechanics) Flow of a fluid over a body at speeds greater than the speed of sound in the fluid, and in which the shock waves start at the surface of the body. Also known as supercritical flow.

What is the difference between subsonic and supersonic flight What is the Mach number and how is it related to each case?

By definition, at Mach 1, the local flow velocity u is equal to the speed of sound. At Mach 0.65, u is 65% of the speed of sound (subsonic), and, at Mach 1.35, u is 35% faster than the speed of sound (supersonic).

## How is supersonic flight achieved?

At supersonic speeds, the air molecules in front of the wing are unable to move out of the way fast enough. The air molecules then form a cone shaped shockwave that follows behind the aircraft. The sudden release of pressure from the shockwave creates a sound that is known as a sonic boom.

## What is unique about supersonic aerodynamics?

Supersonic aerodynamics is simpler than subsonic aerodynamics because the airsheets at different points along the plane often cannot affect each other.

Is supersonic more fuel efficient?

Supersonic aircraft are estimated to burn five to seven times as much fuel per passenger as a regular aircraft, according to the nonprofit International Council on Clean Transportation.

### What are supersonic airfoils?

Supersonic airfoils generally have a thin section formed of either angled planes or opposed arcs (called “double wedge airfoils” and “biconvex airfoils” respectively), with very sharp leading and trailing edges. The sharp edges prevent the formation of a detached bow shock in front of the airfoil as it moves through the air.

### How to calculate the supersonic aerodynamic characteristics of an aircraft?

To study the supersonic aerodynamic characteristics of an aircraft, the calculation model is the supersonic airfoil, including two types―diamond-shaped airfoil and symmetric double-curved airfoil. The methods include the shock wave expansion method, the first approximation method, and the second approximation method.

How do supersonic airfoils increase lift at lower speeds?

Therefore, to increase lift at lower speeds, aircraft that employ supersonic airfoils also use high-lift devices such as leading edge and trailing edge flaps. At supersonic conditions, aircraft drag is originated due to:

## Can linearization be used in supersonic airfoils?

For the supersonic airfoil, the thickness is often thin, the curvature is small or even zero, and the flight angle of attack is also small. Thus, linearization can be adopted.