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RC India
RC Equipments
Fuel and Engines
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Homemade Turbojets
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«
on:
December 23, 2014, 09:26:59 PM »
Ayush singh panwar
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Homemade Turbojets
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hello guys,
i am working on a homemade turbojet engine. can anyone make me understand the working of combustion cheamber in model jet engines.
«
Last Edit: December 24, 2014, 12:17:37 AM by iamahuman
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Reply #1 on:
December 23, 2014, 09:44:56 PM »
kplkum
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Homemade Turbojets
Do u ever see kerosene stove. .. that part in red circle put in a metal tube.. I think it works. ..
Homemade Turbojets
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Reply #2 on:
December 23, 2014, 10:27:30 PM »
K K Iyer
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Homemade Turbojets
Maybe people who have to ask how the heart works should wait before doing open heart surgery
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December 24, 2014, 07:38:28 AM »
sanjayrai55
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Quote from: K K Iyer on December 23, 2014, 10:27:30 PM
Maybe people who have to ask how the heart works should wait before doing open heart surgery
lol !
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Reply #4 on:
December 24, 2014, 01:27:25 PM »
Ayush singh panwar
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bro i already knew that
thanks for your answer
i want to know about evaporation of fuel in the cheamber
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December 24, 2014, 01:30:19 PM »
SK1701
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EDIT: After the previous post was edited, this looks stupid. Earlier, all it said was 'bro'.
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Last Edit: December 24, 2014, 01:55:09 PM by SK1701
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December 24, 2014, 01:35:12 PM »
Ayush singh panwar
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bro dont you know stove is different it
combustion in jet engine and stove is very different
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December 24, 2014, 01:57:39 PM »
Ayush singh panwar
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if combustion cheamber works in the way that stove works so every model jet engine works in simple kerosene
but model jet engine's combustion cheamber require jet-A fuel which is highly flamable and is very costly
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December 24, 2014, 02:01:34 PM »
Ayush singh panwar
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Quote from: SK1701 on December 24, 2014, 01:30:19 PM
EDIT: After the previous post was edited, this looks stupid. Earlier, all it said was 'bro'.
Quote from: kplkum on December 23, 2014, 09:44:56 PM
Do u ever see kerosene stove. .. that part in red circle put in a metal tube.. I think it works. ..
i think u need to think it over..............okey
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December 24, 2014, 02:16:01 PM »
SK1701
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Jet A and A-1 fuels are kerosene based fuels which also have other hydrocarbons in order to tailor the properties for the application. They also have additives including antifreeze, antistatic agents, corrosion inhibitors and metal deactivators. This would explain the higher prices. What is the purpose of the turbojet you plan to build?
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December 24, 2014, 02:35:01 PM »
Ayush singh panwar
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bro i want it to fly my RC plane
i just want to know that how the fuel in the combustion chamber initially evaporates
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Reply #11 on:
December 24, 2014, 03:04:21 PM »
kplkum
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Use nosels for fuel with fuel pump..
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Reply #12 on:
December 24, 2014, 03:19:05 PM »
Ayush singh panwar
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:)thanks bro i will try it
but maybe it will require more fuel
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December 24, 2014, 06:15:03 PM »
K K Iyer
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If you pm me your email address i can send you a 2 minute video of local expert Harveer starting up a turbine using gas.
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Reply #14 on:
December 24, 2014, 06:25:33 PM »
ashok baijal
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Homemade Turbojets
In a turbine the air is initially compressed using a turbine, then fuel is added and ignited. The resultant expanding gases is what gives the trust. The explosive mixture does not require a stove burner to ignite. A stove burner is not even close to what you are trying to achieve. Be very careful because a burner running in a fuel/air mixture will only result in an explosion and resultant injuries.
This video explains a RC model turbine.
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December 24, 2014, 06:34:39 PM »
subhashjk0508
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my suggestion would be take the 'Elements of mehanical engineering' book for 1st sem engineering!! explains turbines and few types of turbines like impulse and reaction!! read it a few years back!! it helps- if you know what i mean!!
regards,
JK
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Reply #16 on:
December 24, 2014, 07:10:43 PM »
K K Iyer
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Pics of things you may need!
If you search this forum you'll find a few others also building turbines.
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Last Edit: December 24, 2014, 07:26:20 PM by K K Iyer
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December 24, 2014, 07:12:07 PM »
sanjayrai55
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And please carefully note that fire-extinguisher
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Reply #18 on:
December 26, 2014, 02:21:03 PM »
Ayush singh panwar
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Re: Homemade Turbojets
thanks guys for your replies,
i think i got the answer
to evaporate the fuel the engine's temp should be high but initially it is cold To solve this cold start issue two methods are currently in use.
1- The first method is to use propane or a propane/isobutane mixture as the starting fuel source. This "starting gas" is already in vapor form (at atmospheric pressure) so a glow plug can ignite the air fuel mixture, this gets the engine started and warmed up.
Once warmed up the propane/isobutane is turned off by the electric solenoid gas valve and the kerosene is introduced as the primary fuel source by turning on the second solenoid fuel valve and fuel pump.
2-The other method of starting a model turbine engine is by using what is known as a "KEROSTART" system. This type of starting system does away with the starting gas and uses the main fuel source (jet A or kerosene) to start the engine. A small ceramic pre-heater/ignitor is used to vaporize the liquid kerosene and ignite it by a high voltage electronic sparker or internal glow element.he two main advantages to kerostart is you don't need to have starting gas making it a little more convenient and easier (saves that 10 second or so starting gas fill step) and it sounds more realistic. There is no "propane pop" on startup, but instead the all too familiar "tic, tic, tic," of the sparker just like you would hear in a full size turbine powered helicopter followed by the steady spool up of the engine.
thanks again guys
for more info visit
http://www.rchelicopterfun.com/model-turbine-engines.html
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Re: Homemade Turbojets
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Reply #19 on:
December 26, 2014, 04:12:59 PM »
miginstruments
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Re: Homemade Turbojets
I am not into this technical discussion but what I Would like to Suggest Ayush Sir, is Please do not use words like Bro or Dude because the Forum consists of Super Senior Members. For Instance KK Sir, He is one of the most Decorative Members of this Forum also a Senior Citizen. Its our Goodness that we are being assisted by such Legends. So Ayush Sir, please take care of this thing in future posts. Although I am very Curious about your project and also wish you Success.
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