Concepts for Multi-Speed Rotorcraft Drive System - Status of Design and Testing at NASA GRC [PDF]
In several studies and on-going developments for advanced rotorcraft, the need for variable/multi-speed capable rotors has been raised. Speed changes of up to 50 percent have been proposed for future rotorcraft to improve vehicle performance.
Handschuh, Robert F. +2 more
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Hybrid propulsion systems for motor vehicles with predominantly intermittent modes of operation [PDF]
A small delivery vehicle was equipped with a flywheel-hybrid drive and compared in test stand and driving tests with a conventional drive vehicle.
Bartsch, H., Helling, J., Schreck, H.
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Nonlinear Dynamic Response Analysis of a Three-Stage Gear Train Based on Lightweight Calculation for Edge Equipment. [PDF]
Comput Intell Neurosci, 2022 Ren D, Yao Y, Wang H, Qu H, Wang G.
europepmc +1 more source
Transmission ratio-efficiency coupled modeling and high-efficiency zone design for multi-row planetary gear transmission of hybrid electric vehicles. [PDF]
Sci RepZhang Q, Ren C, Niu H.
europepmc +1 more source
Design of Gear Drives With High Gear Ratio [PDF]
A three part paper to describe the results of several gear drive types with a high gear ratio is presented. A single stage planetary gear train with double helical gears is described with methods to reduce transmission errors and improve load ...
Fuentes, Alfonso +3 more
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Research on power flow of encased differential gear train in coaxial contra-rotating gearbox. [PDF]
Sci RepZhang D, Zhu R, Zhang W, Cui J, Ma L.
europepmc +1 more source
A Model of the Cosmos in the ancient Greek Antikythera Mechanism. [PDF]
Sci Rep, 2021 Freeth T +5 more
europepmc +1 more source
Enhanced diagnosis of planetary gear train faults based on bispectrum and attention mechanism deep convolutional generative adversarial networks. [PDF]
Sci RepYang D, Zhang Y, Li R, Long H, Huang C.
europepmc +1 more source
Performance analysis and optimization design of variant CR-CR 9-speed automatic transmission. [PDF]
Sci RepNie L, Meng Y, Ting KL.
europepmc +1 more source
Mariner Mars 1969 SCAN control subsystem design and analysis [PDF]
Design and analysis of self correcting automatic navigation system for Mariner Mars ...
Horiuchi, H. H., Kerner, T.
core +1 more source