Results 91 to 100 of about 3,085,452 (343)
Development and flight evaluation of active controls in the L-1011 [PDF]
Active controls in the Lockheed L-1011 for increased energy efficiency are discussed. Active wing load alleviation for extended span, increased aspect ratio, and active stability augmentation with a smaller tail for reduced drag and weight are among the ...
Johnston, J. F., Urie, D. M.
core +1 more source
Mobility of Dislocations in Aluminum [PDF]
, 1969 The velocities of individual dislocations of edge and mixed types in pure aluminum single crystals were determined as a function of applied‐resolved shear stress and temperature.
Gorman, J. A. +2 more
core +2 more sources
Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine
Advanced Materials, EarlyView.A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen +5 more
wiley +1 more source
Investigation of Heat and Drag Reduction Induced by Forward-Facing Cavity in Hypersonic Flow
AerospaceThe design of heat and drag reduction systems for hypersonic vehicles has garnered widespread global attention. In this study, the Navier–Stokes equations and the SST k-ω turbulence model are employed to establish a simulation model for heat and drag ...
Ning Ding, Jianlong Chang, Junhui Liu
doaj +1 more source
SSME turbopump bearing analytical study [PDF]
Three shuttle pump bearings operating under severe overspeed and shut-down conditions are evaluated. The specific parameters investigated include outer race stresses, cage stresses, cage-race drag, bearing heating, and crush loading.
Kannel, J. W., Merriman, T.
core +1 more source
Anti-backlash circuit for hydraulic drive system Patent [PDF]
, 1966 Antibacklash circuit for hydraulic drive ...
Acord, J. D.
core +1 more source
A Soft Microrobot for Single‐Cell Transport, Spheroid Assembly, and Dual‐Mode Drug Screening
Advanced Materials, EarlyView.A soft, untethered hydrogel microrobot enables precise single‐cell delivery, self‐assembly into 3D spheroids, and real‐time thermal actuation. Driven by light‐induced convection and embedded with gold nanorods and temperature sensors, the microrobot guides cells, modulates local microenvironments, and supports drug testing.
Philipp Harder +3 more
wiley +1 more source
Dynamic Behavior Simulation Technology of the Wind Turbine Dragging with Double Motors
Kongzhi Yu Xinxi Jishu, 2018 Wind turbine simulator (WTS) is used in the laboratory to carry out various researches on wind power generation technology. Aiming at the increasing capacity of drag motor and driver caused by the increasing of wind turbine simulation experiment system ...
MA Rui +4 more
doaj
Modeling of indentation and slip of wedge punch
Инженерно-строительный журнал, 2017 To determine the load-carrying capacity of the drillpipe slip, it is necessary to calculate the drag force on the surface between the pipe and the slip. To improve such capacity, the grip surface is provided with teeth that can indent into the pipe body.
Artem Semenov +3 more
doaj +1 more source
Load proportional safety brake [PDF]
This brake is a self-energizing mechanical friction brake and is intended for use in a rotary drive system. It incorporates a torque sensor which cuts power to the power unit on any overload condition.
Cacciola, M. J.
core +1 more source