Abstract
The Rim-Driven Fan (RDF) jet is a small, light duct fan jet that serves as the electric aero-engine for various aircrafts with flexible vertical/horizontal propulsions. The RDF jet has a simple structure and is easy to install on the plane. This ϕ30 × 30 cm cylindrical 20 kg compact jet is expected to provide 100–600 kg thrust. A rough weight estimation is 20–60 kg with expected thrust in the range of 100–900 kg.
In this chapter, we first describe the advantage of the RDF jet. Then, its operating principle is explained. Relevant new theories are explored regarding to the magneto-reaction force inside the RDF jetRim Driven Fan (RDF) jet system. Then, we decompose the RDF jet structure, including the rim drive engine, Tai ChiTai Chi fan, duct, and jet and explain them in details.
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Notes
- 1.
About GE90, GEnX,GE9X from 1995, 2010, 2020.
GE90 engine is the originator of many modern jet engines’ cutting-edge standard technologies. The legendary engine GE90 came out in the 1990s. GE90 engine is of great significance. The structure and mechanical design affect GE ‘s’ and CFM's every turbofan engine in the next 20 years, including the popular GEnX engine and the record selling CFM leap engine.
The GEnX engine is used by Boeing 787 dream liner, the best engine in the world. The blade tip diameter of the GEnX fan blade is 2819.4 mm, and the fourth generation CMCs are used.
GE9X's fan blade has the largest diameter in the world, with a tip diameter of 3.4 m. It is the largest fan at present, and the largest engine in the world is GE9X. In 2019, the thrust of GE9X engine reached 134300 pounds (about 61 tons), breaking the record of 127900 pounds (about 58 tons) of GE90-115B engine in 2002. GE9X is a new large bypass ratio turbofan engine developed on the basis of GE90 and genx. Boeing announced in March 2013 that GE9X was the only engine choice for B777-x series.
The naming of GEnx-1B54 ① indicates the fan diameter: “1” is 111In and “2” is 104 in; ② Indicates the aircraft used: “a” refers to Airbus; “B” refers to Boeing 301.9 kn (66,500 lbf); ③ Indicates the thrust value: engine thrust = this value × 1000 lbf.
GEnx-1B54, thrust level 53,200 lbf (24100 kgf, 236 kn), for Boeing 787–3;
GEnx-1B64, thrust level 63,800 lbf (28,960 kgf, 284 kn), for Boeing 787–8;
GEnx-1B70, thrust level, 69,800 lbf (31,680 kgf, 310 kn), for Boeing 787–9;
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Duan, F.L. (2023). The RDF Jet—A New Electric Aero-engine. In: When AIAA Meets IEEE. Springer, Singapore. https://doi.org/10.1007/978-981-19-8394-8_9
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DOI: https://doi.org/10.1007/978-981-19-8394-8_9
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