All/More Electric Aircraft Engine & Airframe Systems - Turbo & Jet ...

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“Electric Aircraft” Philosophy (Cont.) Elimination of conventional hydraulic and bleed air systems leads to mass reduction. However, the mass and size of the electrical equipment would also increase and these changes must be accounted for. Studies evaluate that adoption of more electric technologies would introduce a small mass penalty. However, if the all electric concept is adopted, bleed air systems are eliminated and the conventional hydraulic systems are replaced by local electro‐hydrostatic / electro‐mechanical actuators, then the operating empty weight (OEW) for twin‐engine wide‐body aircraft (A330, B767) could be reduced by at least 0.5% and total fuel saving can reach 4.5%. Unclassified 18
“Electric Aircraft” Improved reliability and life cycle costs, Reduced maintenance, Philosophy (Cont.) Adoption of all or more electric technologies will enable the designers: to meet more severe takeoff requirements, to enhance passenger comfort. Unclassified 19
Page 1 and 2: The 9th Israeli Symposium on Jet En
Page 3 and 4: Evolution of the All/More Electric
Page 5 and 6: “Conventional” Philosophy (Cont
Page 7 and 8: “Conventional” Philosophy (Cont
Page 9 and 10: Effects of Takeoff on Aircraft Oper
Page 11 and 12: Effects of Bleed Air and Shaft Powe
Page 13 and 14: “Electric Aircraft” Philosophy
Page 17: “Electric Aircraft” Unclassifie
Page 23 and 24: Secondary Power Systems (SPS) Distr
Page 25 and 26: Conventional Secondary Power System
Page 27 and 28: Typical Power Level of Electrical L
Page 29 and 30: AC Power Generation & Regenerative
Page 31 and 32: B787 “Bleedless” System Archite
Page 33 and 34: B787 Hybrid Electrical Power Distri
Page 35 and 36: Conventional Vs. Electric ECS Conve
Page 37 and 38: Actuation System The four‐engine
Page 39 and 40: Impact of Aircraft and Engine Desig
Page 41 and 42: Impact of Aircraft and Engine Desig
Page 43 and 44: Impact of the AEA Concept Implicati
Page 45 and 46: More Electric Engine (MEE) Challeng
Page 47 and 48: IAI More “Electric Aircraft” B7

All/More Electric Aircraft Engine & Airframe Systems - Turbo & Jet ...

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