Aerospace Technology 1. Text Chapter 1 – Introduction to Air Power. Learning Outcomes - Describe the relationship between Bernoulli’s Principle and Newton’s Laws of Motion and how they were used to develop a machine that could fly.
Text Chapter 1 – Introduction to Air Power
- Describe the relationship between Bernoulli’s Principle and Newton’s Laws of Motion and how they were used to develop a machine that could fly.
- Describe the coefficient of lift and the parameters involved.
- Identify the parts of an airplane and an airfoil.
- Describe the four forces affecting an airplane in flight.
- Define the three axes, movement around those axes, and the control surfaces that create the motion.
Bernoulli found that the pressure of a fluid, like air, drops when it is accelerated. An example of this can be shown when air passes through a tube that has a restriction.
This tube, known as a venturi tube, causes the air to accelerate when it passes through the middle. The pressure at the restriction drops. Notice the two gauges — the velocity
gauge shows an increase and the pressure gauge shows a decrease. This is the secret of lift for flight that eluded mankind for centuries.
Newton’s Three Laws
An object at rest will remain at rest unless acted upon by an unbalanced, outside force.
2. A force acting upon a body causes it to accelerate in the direction of the force. Acceleration is directly proportional to the force and inversely proportional to the mass of the body being accelerated.
3. For every action, there is an equal and opposite reaction.
Newton’s Third Law is used to explain how an aircraft is lifted against the force of gravity.