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« on: March 21, 2018, 11:45:34 PM »
taksh
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I saw a video of pulse jet rc plane and this rc plane are very fast.
But which material is used in making pulsejet rc plane.
What is pulse jet rc plane. How it's engine works?
What is the costs of maintaining pulsejet rc plane.
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« Reply #1 on: March 22, 2018, 12:41:32 AM »
AL HAM SHARI
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Let me tell you the simple way.
I saw a video of pulse jet rc plane and this rc plane are very fast.
But which material is used in making pulsejet rc plane
You can use stainless steel as the engine body. But , it depends on the fuel. Jet fuel burns at nearly 2000°C s
so  using kerosene ( not the ordinary one , the refined one which is hard to get) or propane as fuel is the best bet.

What is pulse jet rc plane. How it's engine works?
A pulse jet as the name suggests, works by pulsing air through its exhaust to produce thrust. It sounds similar to two stroke bike engines which are overturned to high pitch. So, there can be many variations in the shape and type of pulse jet engines. The most simple design is the U tube design. It consists of a U tube , in which one arm is a bit longer than the other. The shorter arm intakes air while the longer arm exhales air. In the short arm part, there is a constant fuel supply which feeds fuel directly into the curved part of the tube. So I'm going to explain the working of it ,when air enters the short arm, fuel mixes with it and there is a spark plug which ignites the fuel and then it goes through the tube and out of the exhaust. But, only 2/3rd of it only goes out. The remaining 1/3rd comes back due to low pressure in the U tube ( You may be wondering how the low pressure came there as the air gets in through the other hole?) Yes the air mixed with the fuel enters through other hole, but air at this part also comes back to the curved part. ( This is where the pulse happens) The air mixed with the fuel goes to the Curved part without ignition through spark meets with the 1/3rd fire which didn't go out , It ignites again and 2/3rds go out , 1/3rds come back , new air with fuel gets burnt again repeat.
What is the costs of maintaining pulsejet rc plane.
It depends, A simple pulse jet doesn't need much maintenance other than propane or kerosene. But, if you buy a Pulsejet which is far stronger made of alloy, then you need Jet A or Jet X if I remember correctly so the costs of the fuel will be very expensive.
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« Reply #2 on: March 22, 2018, 12:43:33 AM »
AL HAM SHARI
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I forgot , you could use petrol as fuel too ( the lead free one)
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« Reply #3 on: March 22, 2018, 04:50:24 PM »
prabal276
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@ AL HAM SHARI
Is Jet X a type of avaition fuel?
Never heard of it.
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