the act of passing through the air on wings

Lesson Overview
 Identify how humans tried to fly in ancient times
 Describe key aviation devices created during ancient
times
 Understand early concepts of flight
How Humans Tried to Fly in Ancient Times
And maybe not so ancient….
Flight in Ancient Times
 Humans have dreamed of
taking flight for thousands of
years
 Flight is the act of passing
through the air on wings
 People told tales about flight
around the fire at night and
handed down these stories to
their children
First True Stories of Human
Attempts to Fly
 Some early inventors made devices
of lightweight material in
imitation of birds’ or bats’ wings
 As early as the 6th century AD,
there has been recoded attempts
to fly, generally using kites or
gliding flight.
Armen Firman and Ibn Firnas
 A Moor named Armen Firman made the
first known recorded human attempt to fly
in 852 AD
 He put on a huge cloak and jumped from a
tower in Cordoba, Spain. He hoped that it
would open wide like a bat’s wings to slow
him on the way down….it sort of worked.
 Observing the flight was Ibn Firnas, an
early flight engineer who built and flew a
more advanced design in 880 AD at the
young age of 70
Aviation Devices From Ancient Times
Chinese Advances in Flight
 The Chinese invented the kite around
1000 BC
 Used initially as a physiological warfare
weapon by Chinese Generals
 Chinese “Fire Arrows” (1045 AD)
Leonardo da Vinci
 A visionary pioneer in so many
fields, Leonardo da Vinci (1452–
1519) revolutionized the
concepts of aviation and
mechanical design
Daniel Bernoulli

The Dutch-born scientist Daniel
Bernoulli (1700–1782) discovered that
a fluid has a constant pressure, but
when a fluid starts to move faster, the
pressure drops
Sir Isaac Newton
 The Englishman Sir Isaac
Newton (1643-1727)
formulated three famous
laws of motion
Theory of Flight
 Newton’s Laws of Motion
• First Law of Motion


“A body at rest tends to remain at
rest, and a body in motion tends to
stay in motion, unless an outside
force acts on the body.” It is
sometimes referred to as the Law of
Inertia.
One of the most common places
people feel this law is in a fast
moving vehicle. If you were
standing inside a train and it
suddenly stopped, you would
continue to move forward even
though the train had come to a stop.
Theory of Flight
 Newton’s Laws of Motion
• Second Law of Motion


“The acceleration of an object as
produced by a net force, is directly
proportional to the magnitude of the
net force in the same direction as the
net force and inversely proportional
to the mass of the object.”
Hitting a golf ball is a common
example of Newton’s second law.
The golf club is a force that causes
the ball to move (overcoming
inertia), and picks up speed
(acceleration) and since the golf ball
is relatively light, it picks up speed
rapidly.
Force = Mass x Acceleration
F=MxA
Theory of Flight
 Newton’s Laws of Motion
• Third Law of Motion

“Whenever one body exerts a force
upon a second body, the second
exerts an equal and opposite force
upon the first body.” Simply stated,
For every action there is an equal
and opposite reaction.”
Extra Credit: This Saturday
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Lesson Overview
 Identify how humans tried to fly in ancient times
 Describe key aviation devices created during ancient
times
 Understand early concepts of flight