Boomerangs are curved pieces of wood used as weapons and for sport. Boomerangs come in many shapes and sizes depending on their geographic or tribal origins and intended function. The most recognizable type is the returning boomerang, which is a throwing stick that travels in a elliptical path and returns to its point of origin when thrown correctly. Although non-returning boomerangs (throwing sticks or kylies) were used as weapons, returning boomerangs have been used primarily for leisure or recreation. Modern returning boomerangs can be almost any size and are made from a variety of materials.
Not all boomerangs return, they have to be a certain shape.
Boomerangs were first invented by the aboriginals. They were hunting for a kangaroo and threw a stick that they had made it missed the kangaroo and came back. They had accidently created a boomerang . Boomerang in aboriginal means birgan and barragadan
A boomerang when it is thrown correctly spins at an angle like when a gyroscope spins. If there is enough speed and thrust from the thrower it will keep the boomerang going and the boomerang will spin on its “spin axis” and return to the sender.
This is the spin axis on the boomerang . Here is a diagram of a boomerang showing the point where the spin axis is.
These are videos of us using a wheel and a toy to show how a gyroscope works.
Advanced boomerangs can be any size depending on what the thrower wants the boomerang to do.
They can range in weight from ultra-light MTA (Maximum Time Aloft) boomerangs designed to stay in the air for a long time to heavy, lead weighted boomerangs designed to travel a long distance before turning to return to the thrower.
Flight paths are extremely varied, depending on the boomerang and all require a certain amount of practice and skill to throw successfully.
The boomerang’s wing is the shape of a planes wing, both are curved on top and flat underneath.
Because there is more surface area on the curved side for the air to go over, the air is thinner and lighter than the air that travels along the flat underneath side which is more dense.
The denser air pushes the boomerang’s wings up like an aeroplane’s wings
Secret talent We found out that our Japanese teacher taught how to throw a boomerang when he went to Japan. He made a boomerang and he let us use it.
THIS WAS THE FUN PART – TRYING TO THROW THE BOOMERANG Mr Brown showed us how to check the wind direction and how to position the boomerang and which direction to throw it in. We tried and tried and tried but couldn’t get it to come back without any wind. Even Mr Brown had trouble.
Here is a video of a man throwing a boomerang and it actually came back. He throws the boomerang very powerfully
At school our teacher Mr Brown showed us how to throw a boomerang. This is us trying our hardest. But without any wind it was difficult.
We found that one of our teachers at Ruskin Park is actually a boomerang expert. He showed us how to throw the boomerang correctly. It’s good to actually try out what we learned.
Today, boomerangs are mostly used as sporting items.
There are different types of throwing contests: accuracy of return; Aussie round; trick catch; maximum time aloft; fast catch; and endurance .
We made our own boomerangs Josh made these boomerangs from cardboard. We tried them out and compared them to the traditional style. Josh made six different Boomerangs so we could test and see which one was the best. BEST WORST
We tested them too It worked – how good was that!
The boomerang in action This animation is from the internet
Kylie is one of the Aboriginal words for the hunting stick used in warfare and for hunting animals.
Instead of following a curved flight path, it flies in a straight line from the thrower.
They are typically much larger than boomerangs.
It can travel very long distances, and due to its size and hook shape can kill an animal or human opponent.
There are lots of songs about boomerangs . The most famous Aussie song is called “ My Boomerang won’t come back”. Slim Dusty wrote one called “Boomerang” ABBA also had a song called Bang a Boomerang and John Williamson had one called Boomerang Café.