Aerodynamic Forces Quiz

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True or false: The aerodynamic force on a body immersed in airflow is due to pressure and temperature distributions acting all over the exposed surface of the body?

False

True or false: Pressure acts locally perpendicular to the surface, and shear stress acts locally parallel to the surface?

True

True or false: The net aerodynamic force on the body is solely due to the pressure distribution integrated over the total exposed surface area?

False

True or false: The free-stream velocity is denoted by V∞ and is frequently called the relative wind?

True Signup and view all the answers

True or false: Aerodynamic lift, drag, and moments are not affected by the angle of attack of the body in the free stream direction?

False Signup and view all the answers

What are the two hands of nature that exert aerodynamic force on a body immersed in airflow?

The two hands of nature are the pressure and shear stress distributions. Signup and view all the answers

What is the direction of pressure and shear stress acting on the surface of an airfoil due to the airflow over the body?

Pressure acts locally perpendicular to the surface, and shear stress acts locally parallel to the surface. Signup and view all the answers

How is the resultant aerodynamic force on the body written in terms of local pressure and shear stress at a point A on the surface?

The resultant aerodynamic force R on the body can be written as the integral of the pressure and shear stress distributions over the total exposed surface area. Signup and view all the answers

What is the angle at which the body is oriented in relation to the free stream direction in the context of aerodynamic lift, drag, and moments?

The body is oriented at an angle of attack 'a' to the free stream direction. Signup and view all the answers

What is the free-stream velocity denoted by and what is it frequently called?

The free-stream velocity is denoted by V∞ and is frequently called the relative wind. Signup and view all the answers

Aerodynamic Forces Quiz

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Questions and Answers

True or false: The aerodynamic force on a body immersed in airflow is due to pressure and temperature distributions acting all over the exposed surface of the body?

True or false: Pressure acts locally perpendicular to the surface, and shear stress acts locally parallel to the surface?

True or false: The net aerodynamic force on the body is solely due to the pressure distribution integrated over the total exposed surface area?

True or false: The free-stream velocity is denoted by V∞ and is frequently called the relative wind?

True or false: Aerodynamic lift, drag, and moments are not affected by the angle of attack of the body in the free stream direction?

What are the two hands of nature that exert aerodynamic force on a body immersed in airflow?

What is the direction of pressure and shear stress acting on the surface of an airfoil due to the airflow over the body?

How is the resultant aerodynamic force on the body written in terms of local pressure and shear stress at a point A on the surface?

What is the angle at which the body is oriented in relation to the free stream direction in the context of aerodynamic lift, drag, and moments?

What is the free-stream velocity denoted by and what is it frequently called?

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