Basic Principles Of Aerodynamics! Quiz

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1/10 Questions

Which of these is not an aerodynamic force of flight?
- Weight
- Gravity
- Drag
- Lift

About This Quiz

Solid objects like airplanes and birds fly perfectly in the air because they obey the laws of aerodynamics. Do you already know this? Aerodynamics is a new knowledge of the interaction between solid objects flying and the air. This scientific concept is closely associated with fluid mechanics and gas mechanics. Let's take a quiz!

Basic Principles Of Aerodynamics! Quiz - Quiz

2.

How many are the forces of flight?
- Four
- Seven
- Nine
- Five
Correct Answer

A. Four

Explanation

The forces of flight are four: lift, weight (or gravity), thrust, and drag. Lift is the force that opposes weight and allows an aircraft to stay in the air. Weight is the force exerted by gravity on the aircraft. Thrust is the force that propels the aircraft forward. Drag is the resistance encountered by the aircraft as it moves through the air. These four forces work together to enable flight.

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3.

What is Bernoulli's principle used to calculate?
- Density
- Thrust
- Aerodynamic lift
- Flow velocity
Correct Answer

A. Aerodynamic lift

Explanation

Bernoulli's principle is used to calculate aerodynamic lift. This principle states that as the speed of a fluid (such as air) increases, its pressure decreases. In the context of aerodynamics, this principle explains how the difference in air pressure between the top and bottom of an airplane wing generates lift, allowing the aircraft to stay in the air. This principle is fundamental in understanding the physics of flight and is widely applied in the design and analysis of aircraft.

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4.

Which of these aerodynamic quantities is not related to Hydrodynamica?
- Density
- Thrust
- Pressure
- Flow velocity
Correct Answer

A. Thrust

Explanation

Thrust is not related to Hydrodynamica. Hydrodynamica is the study of fluids in motion, specifically water, and how they behave under different conditions. Density, pressure, and flow velocity are all important quantities in hydrodynamics as they help determine the behavior of fluids. However, thrust is a force that propels an object forward and is more related to aerodynamics, specifically in the context of propulsion systems like jet engines or rockets.

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5.

How many aerodynamicists developed drag theories?
- Three
- Seven
- Two
- Four
Correct Answer

A. Three

Explanation

Three aerodynamicists developed drag theories.

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6.

When was the first wind tunnel constructed?
- 1879
- 1871
- 1899
- 1839
Correct Answer

A. 1871

Explanation

The correct answer is 1871. This means that the first wind tunnel was constructed in 1871.

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7.

When were the Euler equations of aerodynamics published?
- 1735
- 1757
- 1744
- 1771
Correct Answer

A. 1757

Explanation

The Euler equations of aerodynamics were published in 1757.

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8.

When were the forces of flight first identified?
- 1788
- 1799
- 1782
- 1719
Correct Answer

A. 1799

Explanation

The forces of flight were first identified in 1799.

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9.

Who was the first person to identify the four aerodynamic forces of flight?
- Leonhard Euler
- Isaac Newton
- George Cayley
- Robert Kiyosaki
Correct Answer

A. George Cayley

Explanation

George Cayley is credited with being the first person to identify the four aerodynamic forces of flight. Cayley, an English engineer and inventor, conducted extensive experiments and observations on the principles of flight. He recognized that lift, weight, thrust, and drag were the four fundamental forces that act on an aircraft during flight. Cayley's work laid the foundation for modern aviation and his insights were crucial in the development of the first successful gliders and airplanes.

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10.

Who constructed the first wind tunnel?
- Charles Renard
- Richard Best
- George Cayley
- Francis Wenham
Correct Answer

A. Francis Wenham

Explanation

Francis Wenham is credited with constructing the first wind tunnel. A wind tunnel is a device used to study the effects of airflow over different objects. Wenham's wind tunnel, built in 1871, consisted of a long wooden box with a fan at one end to generate airflow. This allowed him to conduct experiments and gather data on the aerodynamics of different shapes and designs. Wenham's work laid the foundation for further advancements in aviation and engineering.

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