Bottle rocket
A bottle rocket is a very small skyrocket. A typical bottle rocket consists of a rocket engine attached to a stabilizing stick. The user can place the stick in an empty bottle (hence the name), and ignite the rocket engine; the mouth of the bottle guides the stick, stabilizing the rocket in its first moments of flight. In India, bottle rockets are set off during the Hindu festival of Diwali, and are sold in the millions.
These rockets have been made at least since the early decades of the 20th century, and in many countries, including Japan, China, and Macao. The older type of bottle rocket was typically a black powder skyrocket with a motor about 2 inches (5 cm) long and up to 0.375 inch (9 mm) diameter, mounted on a thin bamboo splint and often having a small report charge.
Modern bottle rockets are small and very cheap. They are often sold by the box (Although more commonly by the gross, a packet of 144 rockets) for less than $US 0.20 each. In Thailand's Isan region, many are made by hand and sold in conjunction with Rocket Festivals. The largest bottle rockets used at the festivals are Bang Fai rockets which can be up to 20 metres long and charged with up to 500 kg of black powder.
Water rocket
A water rocket is a type of model rocket using water as its reaction mass. Such a rocket is typically made from a used plastic soft drink bottle. The water is forced out by a pressurized gas, typically compressed air. Like all rocket engines, it operates on the principle of Newton's third law of motion.
Operation
The bottle is partly filled with water and sealed. The bottle is then pressurized with a gas, usually air compressed from a bicycle pump, air compressor, or cylinder up to 125 psi, but sometimes CO2 or nitrogen from a cylinder.
Water and gas are used in combination, with the gas providing a means to store potential energy, as it is compressible, and the water increasing the mass fraction and providing greater force when ejected from the rocket's nozzle. Sometimes additives are combined with the water to enhance performance in different ways. For example: salt can be added to increase the density of the reaction mass resulting in a higher specific impulse. Soap is also sometimes used to create a dense foam in the rocket which lowers the density of the expelled reaction mass but increases the duration of thrust. It is speculated that foam acts as a compressible fluid and enhances the thrust when used with De Laval nozzles.
Bottle rocket (disambiguation)
A bottle rocket is a very small skyrocket.
Bottle rocket or bottle rockets may also refer to:
- Bottle Rocket (soundtrack), the soundtrack to that film
Podcasts:
Bottle Rocket
ALBUMS
- Demo released:
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by Going Nowhere Fast
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by Bottle Rocket
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by Bottle Rocket
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by Guardian
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by Heatmiser
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by Sister 7
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by Face First
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by Sister Seven
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by Bottle Rocket
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by Bottle Rocket
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by Evidence
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by Swollen Members
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by Bottle Rocket
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by Bottle Rocket
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by Bottle Rocket
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by Bottle Rocket
Bottle Rocket
by: Going Nowhere FastThe money spent on bombs and guns,
causes more problems than the ones, their meant to stop.
And although our Prime Minister looks a bit like a man,
at least she had the sense to, STAY OUT OF IRAQ!
Woah!
Left, right, left, right, left, right, left, right.
Woah!
Left, right, left, right, left, right, left, right.
Be careful when you roll the dice when playing with peoples lives,
not everyone's prepared to die, for what they never thought was right.
You having control of the world may not have been,
the first thing on their minds.
Woah!
Left, right, left, right, left, right, left, right.
Woah!
Left, right, left, right, left, right, left, right.
And as another body hits the dirt,
their friends and loved ones feel the hurt.
Lost a friend and lost a Dad,
lost a son that they once had.
Tears rolling down their cheeks,
they're so hungry, they're so weak.
You destroyed what was their lives,
so much terror so much strife.
And as another body hits the dirt,
their friends and loved ones feel the hurt.
Lost a friend and lost a Dad,
lost a son that they once had.
Woah!
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