How Does a Lawn Sprinkler Work?

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Lawn sprinklers operate by utilizing water pressure to create a pressure drop that enables the rotation of the sprinkler head. Different types of sprinklers exist, including continuously rotating domestic models and larger systems that employ spring mechanisms to change direction. The expelled water from the sprinkler head propels the rotation, distinguishing them from pumps. Understanding the specific type of sprinkler is essential for grasping its operational mechanics. Overall, the fundamental principle revolves around using water pressure to facilitate movement and distribution.
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Hi friends,
Can anyone please explain the how Lawn Sprinkler works.

Thank You,
Yaswanth
 
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How it sprinkles the water around. I mean how it rotates, is pressure drop in the hoses of the sprinkler which rotates it?
 
A rotating one would just use the water it expels to propel it.
 
russ_watters said:
A rotating one would just use the water it expels to propel it.

I think they all do that :P That's what makes it different from a pump.

Yaswanth, what kind are you talking about? There are domestic continuously rotating ones, and larger scale ones which have some kind of spring mechanism and change direction.

But basically, yes, there'll be a pressure drop from which energy is used to rotate the head.
 
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Scenario 1 (figure 1) A continuous loop of elastic material is stretched around two metal bars. The top bar is attached to a load cell that reads force. The lower bar can be moved downwards to stretch the elastic material. The lower bar is moved downwards until the two bars are 1190mm apart, stretching the elastic material. The bars are 5mm thick, so the total internal loop length is 1200mm (1190mm + 5mm + 5mm). At this level of stretch, the load cell reads 45N tensile force. Key numbers...
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