Aviation unit 2
Which of the following represents contribution, Greek myths, made to civilization today
Inspiration for human flight
How gliders produce lift even though they don't have engines
A glider produces thrust by converting potential energy into kinetic energy As the glider falls it's gravitational potential energy is converted into kinetic energy this increases the gliders speed
Which type of aircraft performs best with a symmetrical air foil
Aerobatics aircraft
Both of the wright brother and da vinci based their theories of flight from observation of ______
Animals in flight
Why is air density important when using hot balloons
As air inside the balloons gets warmer the density in the air and the balloon decreases causing it to rise
A pilot descends a hot air balloon by allowing air to escape through ———
As the parachute vals
Hot air balloons rise ____ lifting the balloon
Becomes less defense
Which concept best illustrates the mechanics, flying, hot air balloon
Density and buoyancy
In early aviation research which was the most important contribution of sir George cayleigh
Described the underline principles and forces of flight
When the four forces of flight are balance the flying object is said to have ———
Equilibrium
Leonardo da Vinci flying machine in the orthopter was an invention to this
Flapped it's wings like a bird
Which is an aircraft whose flight does not depend principally on a engine
Glider
Explain how hot air balloons crest left
Hot air balloons experience lift due to arch principal because hot air is less dense and thus more buoyancy then cooler air
What is the purpose of the burner of a hot air ballon
It gets then air inside the balloon causing it to rise
For modern day gliders did what Bernoulli's principal demonstrates?
It removed faster over the top of the wing in the air below the wings
Birds generate ——— by flapping there wings
Lift and thrust
Movement of a wing through the air creates——- on the top of the wing as compared to the bottom of the wing allowing for lift
Lower pressure
What does a camver of an air foil refer to
The curve of the wing
What the wright brothers learn from building a wind tunnel
The wright brothers built a wind tunnel to study why their air foil designs did achieve the same theoretical lift predicted by autto Lilienthal and others
Which statement accurately portrays the wright brothers
They approach problems systematically and methodically controlling all other variables
Explain how Ancient Greek stories modern in aviation
They inspired humans to build flying machines Humans have watched birds fly and tempted to imnalute the use of wings and flight Stories been told in literature, art and science
Explain how the wright brothers used the engineering practices to successfully achieve life when other engineers failed
They started by delivering by understanding the controlling their aircraft was the hardest challenge they knew what question to focus their energies on
Why dis the wright brothers include a rutter in their airplane design?
To prevent the glider from spinning out of control
Which of the following best explains why wind tunnels are used in the testing the design of aircrafts?
To test scale models in air foils in aircraft
What part of the bird most resembles the propeller on a aircraft
Wings