Fluids
Fluids are....
Liquids and gases
What is more aerodynamic, a piece of cardboard or a football?
A football
What is the spinning part of the helicopter called?
The propeller
What part of airplane produces lift?
The wings
What force opposes weight (gravity)?
Lift
What is a fluid?
A substance that flows
What is one activity we did that delt with drag?
The helium balloon design challenge
What part of the airplane produces thrust?
The gas turbine engines
What principle allows lift to occur in airplanes?
Bernoulli's Principle
Fast moving air has...
Low pressure
When fluids are heated they...?
Rise/expand
What part of the airplane increases drag?
The wing flaps
How does a bird produce thrust?
By flapping it's wings
Car spoiler are used to...
Reduce lift
Would your weight increase or decrease when on the moon? Comparing it to your weight on Earth
Your weight would decrease
Dolphins and Barn Swallows both have what type of body shape that allow them to move through water and air easily
The more aerodynamics an object is...
The easier it is for air to move around it.
Which forces affect a spacecraft?
thrust and weight (gravity)
Fluids move from which type of pressure to which type of pressure
High pressure to low pressure
How does a lighter than air flying device overcome the force of weight (gravity)?
It uses a gas that is lighter than air enabling it to lift
When blowing up a balloon, what three fluid properties can be observed?
Fluids take up space, have weight and exert a pressure
What are the factors that affect drag?
Changing surface area, changing shape and changing surface type (smooth versus rough)
Helicopter blades are small __________
Airfoils
What type of wings does an albatross have?
Passive Soaring Wings
As mass increases, weight...
f=ma
Increases