Results 101 to 110 of about 465,669 (314)

Design and development of the quad redundant servoactuator for the space shuttle solid rocket booster thrust vector control [PDF]

, 1980
The design and theory of operation of the servoactuator used for thrust vector control of the space shuttle solid rocket booster is described accompanied by highlights from the development and qualification test programs.
Lominick, J. M.
core   +1 more source

Physical Intelligence in Small‐Scale Robots and Machines

Advanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

Strength Enhancement and Redundant Design of the Electromagnetic Repulsion Valve for High-Speed Switch Hydraulic Mechanisms

Energies
As a control structure, the magnetic repulsion device is applied in the high-speed switch hydraulic operating mechanism. It must not only move quickly but also stop precisely.
Youpeng Zhang, Jianying Zhong, Zhijun Wang, Yingqian Du   +3 more
doaj   +1 more source

Designing a New Artificial Lift Method Using Computational Simulation and Evolutionary Optimization

IEEE Access, 2019
Oil exploitation has moved into deeper reservoirs with the advances in drilling techniques and thus the development of new pumping techniques has become a challenge to improve production. The positive displacement pumping system proposed in this paper is
Andre Pimentel Moreira, Herman Augusto Lepikson, Leizer Schnitman, Geraldo Luis Bezerra Ramalho   +3 more
doaj   +1 more source

The WaveGyro [PDF]

, 2013
The WaveGyro – A new Concept for Ocean Wave Energy Capture (Master Thesis by Gebhard Waizmann, University of Southampton 22.09.2011) Abstract Climate change, environmental pollution and the proceeding resource depletion give awareness of the ...
Waizmann, Gebhard
core   +1 more source

Porous Iridium Oxide Inverse Opal Catalysts Enable Efficient PEM Water Electrolysis

Advanced Materials, EarlyView.
Porous iridium‐based inverse opal (IrOx‐IO) structures are introduced as high‐performance, unsupported PEM‐WE anode catalysts. Their electrochemical behavior is analyzed through porosity/surface area tuning, voltage breakdown, and circuit modeling.
Sebastian Möhle, Kerolus Nasser Nagi Nasralla, Jakub Drnec, William Chèvremont, Peter Strasser   +4 more
wiley   +1 more source

Research on Safety Control Technology for Dual-string Annulus in Integral Injection-production Well of Offshore Oilfield

Shiyou jixie, 2016
Existing injection-production technology in the same well has no dual-string annulus safety control technology and matching tools for offshore oilfield application.
Zhao Zhonghao, Zhang Chengfu, Luo Changhua, Wang Sheng, Zou Minghua   +4 more
doaj  

Anti-backlash circuit for hydraulic drive system Patent [PDF]

, 1966
Antibacklash circuit for hydraulic drive ...
Acord, J. D.
core   +1 more source

Autonomous Hydrogel Actuators Programmed by Endogenous Biochemical Logic for Dual‐Stage Morphing and Drug Release

Advanced Materials, EarlyView.
A 3D‐printed BSA–PEGDA bilayer actuator performs biochemical logic, bending autonomously in acid and releasing its drug payload only when both acid and pepsin are present. This dual‐stage, enzyme‐gated mechanism enables autonomous catch‐and‐release motion and controlled gastric drug delivery, representing a programmable soft material powered by ...
Yuchen Liu, Harischandra Potthuri, Alejandro Sosnik, Luai R. Khoury   +3 more
wiley   +1 more source

PAT Design Strategy for Energy Recovery in Water Distribution Networks by Electrical Regulation

Energies, 2013
In the management of water distribution networks, large energy savings can be yielded by exploiting the head drop due to the network pressure control strategy, i.e., for leak reductions.
Helena M. Ramos, Oreste Fecarotta, Giuseppe del Giudice, Armando Carravetta   +3 more
doaj   +1 more source