Air and Aerodynamics Flashcards
what are the five properties of air
- it is invisible
- it is made out of gases
- it has mass
- it takes up space
- it exerts pressure
give an example of when you can feel air moving
wind
what is atmospheric pressure
it is earths gravitational field pulling on air
what is mass
amount of matter in a object
all matter is made out of
molecules
why is air fluid
it can be a liquid and a gas and it can take the shape of any container it flows into
compressed means
squeezed into a smaller space
can air be compressed
yes
what is Bernoulli’s principle
it states that as the speed of a moving fluid increases the pressure within the fluid decreases
Bernoulli’s principle was a key idea in the Development of
human flight
how are aircraft wings designed
the wig is designed so that the air is faster on the top but slow on the bottom
what are the four forces of light
lift thrust drag and gravity
what is lift
it is upward force that keeps the object in the air
what is thrust
it gives a flying object a forward motion
what is drag
is the force that acts to slow down the object that is in the air
