A boomerang does funny things because it is in fact a gyroscope. Aerodynamic forces generate a twisting moment which cause the "gyroscope" to precess (i.e the couple achieved by the difference in lift force between top and down) and to move on a circular path. If you are courious, click the following link to learn more: How boomerang works
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However, it is not necessarly a stick that comes back. The intention of the Aboriginal boomerang is to hunt animals for food or as a weapon in warfare. If you want to learn more about the origins and etimology give a look to this link: Hunting Boomerang a Weapon of Choice
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In this Slide Show gallery there are some of my boomerangs.
I also owned a didgeridoo and two aboriginal stick dance. For an analytical study give a look to these documents:
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The Tri-bladers boomerangs are very light and don't require a very strong throw. Because of their lightness they should not be thrown in windy conditions. These are good for beginners. Range is about 10-25 meters.
Intermediate boomerangs can be any shape and are heavier. They will require a harder throw but will work better in windier conditions. Some will need a little more technique in the throw but are capable of differing flight paths, depending on how they are thrown. Range can be from 30-50 meters. I'm still practicing in this stage, before moving to the advanced types. |