Without wind tunnels, the course of human history might've been very different. How much do you know about these cool, breezy machines?
Question 1 of 20
Wind tunnels are designed to study what sort of forces?
Question 2 of 20
Leonardo da Vinci drew up plans for an early plane. What was it called?
Question 3 of 20
In terms of aerodynamics, what is drag?
Question 4 of 20
What is turbulence?
Question 5 of 20
Which contraption was an early forerunner to wind tunnels?
Question 6 of 20
Who invented the first whirling arm?
Question 7 of 20
What was one major problem with the design of whirling arms?
Question 8 of 20
What shape was most often tested on whirling arms?
Question 9 of 20
What was one of the most important forces that whirling arms helped early engineers investigate?
Question 10 of 20
When was the first wind tunnel constructed?
Question 11 of 20
How long, in feet, was the first wind tunnel?
Question 12 of 20
What is the most important section of a wind tunnel?
Question 13 of 20
Who researched the results of whirling arms and English wind tunnels and decided to make their own?
Question 14 of 20
The Wright brothers placed a fan upstream of the test section in their wind tunnel. Why was this a mistake?
Question 15 of 20
How big was the test section the Wright brothers' wind tunnel?
Question 16 of 20
About how many different shapes of airfoils did the Wright brothers test in their wind tunnel?
Question 17 of 20
Which section of the wind tunnel calms the air as it begins its movement downstream?
Question 18 of 20
Which section is specifically constructed to reduce turbulence from pushing back into the test section?
Question 19 of 20
What is the name of the metal pole that secures models in the test section?
Question 20 of 20