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Transcript of ROTOCOPTERS
A Rotocopter is a mini helicopter made from paper that spins when you drop it to the ground. We are going to make some and discover the science behind it!
What is a Rotocopter?
A helicopter can take off and land vertically (straight up and down). It can fly in any direction, even sideways and backwards. It can also hover or hang in the air above a given place. ( why do we use helicopters?
Helicopters for beginners:
As a TSG take notes. Consider:
what creates lift?
What influence does air pressure have on a helicopter? What do the Rotors do?
TAKES NOTES- WE WILL DISCUSS!!
Also: What are the main controls? What do they do?
Relationship to helicopters:
The faster air on top of the wing makes suction on the top of the wing and the wing moves up. Airplanes get lift from their wings. A helicopter's rotor blades are spinning wings. A helicopter moves air over its rotor by spinning the blades.
The tail rotor produces thrust like an airplane's propeller does. By producing thrust in a sideways direction, this critical part stops the engine's desire to spin the body
How do Rotocopters work?
When the Rotocopter falls, air pushes up against the blades, bending them up just a little. When air pushes upward on the slanted blade, some of that thrust becomes a sideways, or horizontal, push.
Why doesn't the copter simply move sideways through the air?
DISCUSS. Think about what you know about push and thrust.
Because there are two blades, each getting the same push, but in opposite directions. The two opposing thrusts work together to cause the paper rotocopter to spin.
Igor Sikorsky designed the first successful helicopter in the late 1930s. His inspiration came from drawings of an aircraft with a spinning wing, drawn by Leonardo da Vinci nearly five hundred years before. Holy moses!
1. Create your Rotocopter. Work in TSG's. support and assist each other.
2. Always be thinking of the science behind it.
3. Your aim is to create a rotocopter that drops slowly to the ground.
4. You can make one modification after your first test. Time each drop from exactly the same height.
5. How does a rotocopter work? Rate your rotocopter- explain.
Helicopters can be used in many different ways. Today, helicopters are used for transportation, for construction, for firefighting, search and rescue, and a variety of other jobs that require the special capabilities of the helicopter. Some police use them to monitor traffic, and catch speeders.
They are used for emergency rescue such as grass fires. They are used for air ambulances when a patient needs to be rushed to a different hospital- because of their ability to take off and land vertically, and it doesn't need a runway. Military forces use helicopters to land men on the ground to fight. The military also transports food, missiles, needed medical equipment etc.. helicopters can also be used for recreation. Some people pay money to go up in a helicopter and fly over forests cities, and anything else that would look interesting from above.
Helicopters are also used for Aerial photography, Motion picture photography, Electronic news gathering, search and rescue, travelling, and touring or personal pleasures.