Dropping a Humvee
Watch the video about dropping a Humvee and read the information in the article then answer questions below.
What other vehicles, in addition to Humvees, does the US Army drop? ______________ and __________________
How high is a plane when they do a heavy airdrop? ______________
How fast is a plane flying when they do a heavy airdrop in mph? ____________________
There are actually 3 different sets of parachutes used in a drop.
What is a drogue and what does it do? _________________________________________
How big is the extraction chute? _________________________________________________
When do the primary chutes deploy? _______________________________________________
Landing speed is 24 to 25 feet per second. How much is that in miles per hour? ________
(Google convert feet per second to miles per hour and type in the numbers)
Do you think it would cause damage to a vehicle to hit something hard at that speed? _______
How many layers of honeycomb are under the vehicle? _________
How many layers of honeycomb should be crushed in a worst case scenario where the Humvee is impacting at 28.5 feet per second. _______ How many miles per hour is that? _____
What is the cushioning made of? ___________________________________________________
Where does the cushioning go? ___________________________________________________
How strong is the honeycomb? ___________________________________________________
Skydiving without a parachute and surviving
Watch the video on how a skydiver landed safely without a parachute. Read the article about it and answer the questions.
How high did the skydiver jump from (in feet)? _______________________
How long did he fall? ___________________________
How big was the net he fell into? _________________
Without a parachute, how fast would a skydiver would fall? __________
To slow down, a skydiver can spread their limbs to increase surface area. How fast will they go then? ________________
How did Aikins' smart helmet help make the jump safe? __________
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How does a falling skydiver steer his body toward a target on the ground?________________________________________________
What kind of energy does a skydiver falling at high speed have? ______________
What is the net made of ?_____________________________
ON YOUR OWN: What kinds of tests do you think they needed to do before the jump to be sure it was safe? List at least 3:
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