RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems

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Old 07-26-2017, 03:49 AM
  #76
pilot tw
 
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1/5 Pagasus Turbofan engine.,
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Old 07-26-2017, 04:11 AM
  #77
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Quote:
Originally Posted by pilot tw View Post
1/5 Pagasus Turbofan engine.,
what is the diameter of the fan?
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Old 07-26-2017, 04:30 AM
  #78
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Quote:
Originally Posted by erh7771 View Post
what is the diameter of the fan?

diameter is 230mm
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Old 07-26-2017, 04:56 AM
  #79
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So it is going to be kind of like a turboprop? The turbine will spin the fan? Where does the heat from the turbine exhaust?
Jay
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Old 07-26-2017, 10:27 PM
  #80
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Quote:
Originally Posted by BlueBus320 View Post
So it is going to be kind of like a turboprop? The turbine will spin the fan? Where does the heat from the turbine exhaust?
Jay
The hot gas is inside the thin wall stainless pipes which are placed in the rear carbon nozzles and high speed cold fan air in the gap will prevent heat damage of carbon parts.

Last edited by Likai; 07-26-2017 at 10:30 PM.
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Old 07-27-2017, 06:08 PM
  #81
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Quote:
Originally Posted by Likai View Post
The hot gas is inside the thin wall stainless pipes which are placed in the rear carbon nozzles and high speed cold fan air in the gap will prevent heat damage of carbon parts.
Thanks Lakia, that sounds amazing. Please post pics of the setup when you can. Very nice work!
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Old 07-29-2017, 11:39 AM
  #82
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remember full size has water injection to increase power and reduce temp
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Old 07-29-2017, 11:40 AM
  #83
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congratulations.... you are making a work....amazing
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Old 08-12-2017, 03:53 AM
  #84
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Finally, the Likai got all parts of the prototype Pegasus turbofan engine casing put together. Now waiting for core engin from KingTech to make it alive.



http://www.youtube.com/watch?v=HcSqH...ature=youtu.be

Last edited by pilot tw; 08-12-2017 at 06:32 AM.
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Old 08-12-2017, 06:08 PM
  #85
Doug Cronkhite
 
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Such an exciting project, Anton! Can't wait to see this going forward!
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Old 08-13-2017, 12:51 PM
  #86
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So the fan will be spun from the front part of the turbine ? Via a planetary reduction gear ? Where is the starter of the turbine be ?
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Old 08-14-2017, 07:48 AM
  #87
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Quote:
Originally Posted by lavi rider View Post
So the fan will be spun from the front part of the turbine ? Via a planetary reduction gear ? Where is the starter of the turbine be ?
The fan is driven by a secondary power turbine, not front part of the core turbine. Basically, the power plant is a two spool turbo-shaft engine similar to kingTech K-100 TP or JetCat SPT-15 but with different gearbox and powered by a K-210 core turbine, so the starter is located in the same place as usual.
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Old 08-14-2017, 08:21 AM
  #88
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That is fantastic. Be careful of static electricity.
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Old 08-14-2017, 08:55 AM
  #89
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Quote:
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That is fantastic. Be careful of static electricity.
I have no experience of such big carbon part. Is the static electricity problem coming from the friction between high speed air flow and carbon casing? Need to hear your suggestion.
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Old 08-14-2017, 10:28 AM
  #90
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Yes a guy in California (Ewald Schuster) tried to make a very similar design many years ago, maybe 15 years? He hand made the turbine, the free turbine gearbox etc.

It had a big carbon fiber fan and he never got the static charge under control, at least from what I remember.
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Old 08-14-2017, 11:47 PM
  #91
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Maybe a case for some electrical binding between components?
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