@conference {1430, title = {1430. Fuel and Weight Saving Potential of the All-Electric Airplane}, booktitle = {40th Annual Conference, Dayton, Ohio, May 4-7}, year = {1981}, month = {5/4/81}, pages = {19}, publisher = {Society of Allied Weight Engineers, Inc.}, organization = {Society of Allied Weight Engineers, Inc.}, type = {24. WEIGHT ENGINEERING - SYSTEM DESIGN}, address = {Dayton, Ohio}, abstract = {The all-electric airplane uses electricity to power all functions normally powered by the hydraulic system and by engine compressor bleed air. Hydraulic actuators are replaced by electro-mechanical actuators, servo valves are replaced by digital logic, a vapor cycle refrigeration unit and cabin air compressor are driven electrically, and de-icing is accomplished with resistance heating. Direct-driven samarium-cobalt generators and solid-state power conditioning units eliminate mechanical constant speed drives and oil coolers. Higher transmission voltages and a distributed bus concept reduce the weight of power wiring. Digital multiplexing of all signal wires further reduces wire weight and provides a self-diagnostic capability. Elimination of the entire hydraulic and bleed-air systems and advanced power generation equipment result in a large weight saving. Elimination of bleed-air extraction provides a significant fuel saving. }, keywords = {24. Weight Engineering - System Design}, url = {https://www.sawe.org/papers/1430/buy}, author = {Parks, W} }