Translation and analysis of words by ChatGPT artificial intelligence
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- etymology
fan-shaped air jet - translation to russian
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![A closeup of the PW–Allison 578-DX propfan demonstrator, installed on the port side of a [[McDonnell Douglas MD-80]] testbed.](https://commons.wikimedia.org/wiki/Special:FilePath/578-DX (on testbed).png?width=200 "A closeup of the PW–Allison 578-DX propfan demonstrator, installed on the port side of a [[McDonnell Douglas MD-80]] testbed.")
 McDonnell Douglas demonstrator, Farnborough UK - England, September 1988 (5589809360).jpg?width=200 "m}}, with either eight or ten blades in front (depending on the particular configuration) and eight blades in back.")
![Progress D27 Propfans fitted to an [[Antonov An-70]].](https://commons.wikimedia.org/wiki/Special:FilePath/Progress D-27 propfan (Antonov An-70).jpg?width=200 "Progress D27 Propfans fitted to an [[Antonov An-70]].")
![[[Safran]] open rotor mockup in 2017.](https://commons.wikimedia.org/wiki/Special:FilePath/Safran Open Rotor.png?width=200 "[[Safran]] open rotor mockup in 2017.")
![The [[Progress D-236]] propfan engine on the [[Yak-42]]E-LL testbed aircraft at the Paris Air Show in 1991.](https://commons.wikimedia.org/wiki/Special:FilePath/Yakovlev Yak-42LL, Aeroflot AN0916963.jpg?width=200 "The [[Progress D-236]] propfan engine on the [[Yak-42]]E-LL testbed aircraft at the Paris Air Show in 1991.")
строительное дело
веерная приточная струя
![low and high bypass jet engines]], seen here on a [[Boeing 777]].](https://commons.wikimedia.org/wiki/Special:FilePath/N7771@GVA;09.09.1995-engine (6083468531).jpg?width=200 "low and high bypass jet engines]], seen here on a [[Boeing 777]].")
![[[Patent drawing]] for a ''Fan Moved by Mechanism'', November 27, 1830](https://commons.wikimedia.org/wiki/Special:FilePath/Patent, Mechanical Fan, 1830.png?width=200 "[[Patent drawing]] for a ''Fan Moved by Mechanism'', November 27, 1830")
![[[Internal combustion engine]]s sometimes drive an engine cooling fan directly or may use a separate electric motor.](https://commons.wikimedia.org/wiki/Special:FilePath/1989 Toyota 1HD-T Type engine front.jpg?width=200 "[[Internal combustion engine]]s sometimes drive an engine cooling fan directly or may use a separate electric motor.")
общая лексика
вентилятор
Definition
Wikipedia
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A propfan, also called an open rotor engine, or unducted fan (as opposed to a ducted fan), is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The design is intended to offer the speed and performance of a turbofan, with the fuel economy of a turboprop. A propfan is typically designed with a large number of short, highly twisted blades, similar to the (ducted) fan in a turbofan engine. For this reason, the propfan has been variously described as an "unducted fan" (UDF) or an "ultra-high-bypass (UHB) turbofan".
