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I have been checking the FT-180 engine used to establish speed record for remotely controlled aircraft (i.e. model airplanes). There are some specific features highlighted on the manufacturer site. I'm not specialist of turbojets, but I don't understand why those characteristics are highlighted:

  • They are at the top of innovation with unique features like carbon fiber cowling, Genx type chevron exhaust system and full Inconel internals. ===> Since all these materials are explicited, what is the specific element behind? How do they prevent another company to build a similar engine?
  • All aluminium and steel design: no plastic parts are present on the engine except for the carbon fiber inlet cowl. ===> Why is this important no to have plastic part? I thought that plastic was a light and weather resistant material, so a good one for a remotely controlled aircraft?
  • Genx type chevron exhaust cone . ===> Genuine question: why is this important? Does it give higher performance to the engine?
  • Also, with link to this question: This engine is a axial engine, not a centrifugal one, am I right?
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  • $\begingroup$ This is a question about an engine for model airplanes-- I hope my edit made that clearer. $\endgroup$ Nov 5, 2023 at 13:35
  • $\begingroup$ Thanks for the edit $\endgroup$ Nov 5, 2023 at 15:36

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All aluminium and steel design: no plastic parts are present on the engine except for the carbon fiber inlet cowl. ===> Why is this important no to have plastic part? I thought that plastic was a light and weather resistant material, so a good one for a remotely controlled aircraft?

Because plastics have a relatively low melting point, and jet engines get hot.

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