14 Nov 2025, 13:58 [ UTC - 5; DST ]
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Post subject: US Epic Victory aircraft Posted: 10 Jun 2019, 22:44 |
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Joined: 01/19/10 Posts: 350 Post Likes: +157 Location: NY
Aircraft: C310R
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A new project on assembling the ultra-light business jets ‘Victory’ has been presented by Russian S7 Airlines to the Governor of the Moscow region Andrey Vorobyov. https://www.rt.com/business/436954-s7-b ... nufacture/looks like small jets getting popular for now .
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Post subject: Re: US Epic Victory aircraft Posted: 11 Jun 2019, 12:12 |
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Joined: 12/03/14 Posts: 20746 Post Likes: +26213 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: looks like small jets getting popular for now . In people's imagination, like it has for decades. Building a viable one has always been the challenge. Viable means reasonably priced and not crippled in performance. The buried tail cone engine results in an efficiency robbing inlet S duct which will also cause icing problems. Further, the safety assessment of a buried engine is touch (rotor burst taking out controls, engine fire containment, etc). And lastly, one engine means no thrust and systems redundancy. Mike C.
_________________ Email mikec (at) ciholas.com
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Post subject: Re: US Epic Victory aircraft Posted: 11 Jun 2019, 12:56 |
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Joined: 07/21/08 Posts: 5834 Post Likes: +7285 Location: Decatur, TX (XA99)
Aircraft: 1979 Bonanza A36
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Username Protected wrote: looks like small jets getting popular for now . In people's imagination, like it has for decades. Building a viable one has always been the challenge. Viable means reasonably priced and not crippled in performance. The buried tail cone engine results in an efficiency robbing inlet S duct which will also cause icing problems. Further, the safety assessment of a buried engine is touch (rotor burst taking out controls, engine fire containment, etc). And lastly, one engine means no thrust and systems redundancy. Mike C. Almost every single engine fighter jet on the planet has a buried engine with some type of deflected ductwork. How do they overcome the issue of icing and efficiency?
_________________ I'm just here for the free snacks
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Post subject: Re: US Epic Victory aircraft Posted: 11 Jun 2019, 13:25 |
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Joined: 08/23/10 Posts: 909 Post Likes: +726
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Username Protected wrote: In people's imagination, like it has for decades.
Building a viable one has always been the challenge. Viable means reasonably priced and not crippled in performance.
The buried tail cone engine results in an efficiency robbing inlet S duct which will also cause icing problems. Further, the safety assessment of a buried engine is touch (rotor burst taking out controls, engine fire containment, etc). And lastly, one engine means no thrust and systems redundancy.
Mike C. Almost every single engine fighter jet on the planet has a buried engine with some type of deflected ductwork. How do they overcome the issue of icing and efficiency?
How? In a word (or acronym, rather) OPM. When you have limitless resources in the form of Other Peoples Money, the exorbitant development, acquisition, and operating costs are of little concern. Don't they spend something like 5-10 hours of maintenance for every 1 hour of flight time? How often do they perform hot sections and engine overhauls? I'll bet a lot more often then every 1,800 and 3,600 hours.
Inefficent S ducting? Throw more thrust (money) at it. Heavy tail structure to accomodate the buried engine? Throw more thrust (money) at it. Concerned about icing? Throw more thrust (money) at it. Detrimental outcome risk from a rotor burst? Throw more maintenance (money) at it. Still lots of risk? Give it an ejection seat and a parachute.
You cannot have PFM without OPM.
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Post subject: Re: US Epic Victory aircraft Posted: 11 Jun 2019, 14:36 |
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Joined: 12/03/14 Posts: 20746 Post Likes: +26213 Company: Ciholas, Inc Location: KEHR
Aircraft: C560V
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Username Protected wrote: Almost every single engine fighter jet on the planet has a buried engine with some type of deflected ductwork. How do they overcome the issue of icing and efficiency? By not being in a market where low cost and efficiency are required. Mike C.
_________________ Email mikec (at) ciholas.com
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