Results 41 to 50 of about 32,011 (293)
Applied Sciences, 2017 Axial compressors in aero engines are prone to suffering a breakdown of orderly flow when operating at the peak of the pressure rise characteristic. The damaging potential of separated flows is why a safe distance has to be left between every possible ...
Mario Eck, Silvio Geist, Dieter Peitsch
doaj +1 more source
Development of Heat Engines Powered by Twisted and Coiled Polymer Fiber Actuators
Advanced Materials Technologies, EarlyView.Continuously rotating engines driven by thermally responsive actuating materials can turn waste heat into useful energy. For the first time heat engines operated by twisted and coiled polymer fiber actuators are demonstrated with engine design guided by two simple analytical models.
Geoffrey M. Spinks +2 more
wiley +1 more source
Advanced Robotics Research, EarlyView.This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino +7 more
wiley +1 more source
Effect of inlet elbow on rotation stall in waterjet propulsion pump
Fundamental ResearchTo study the influence of an elbow inlet on the rotating stall characteristics of a waterjet propulsion pump (WJPP), a three-dimensional internal flow field in a WJPP under a straight-pipe inlet and elbow inlet is numerically simulated.
Wei Li +6 more
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An investigation of rotating stall in a single stage axial compressor [PDF]
, 1955 May 1955Thesis written jointly by both authors: Thesis (M.S.)--Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1955Includes bibliographical referencesThe rotating stall characteristics of a single stage axial flow compressor were ...
Braun, Joseph J. +1 more
core
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
Investigation of Rotating Stall Phenomenon and Optimization in Mixed-Flow Waterjet Propulsion Device
Advances in Materials Science and Engineering, 2020 The rotating stall is a kind of flow phenomenon in the impeller harming the navigation speed of vessels propelled by a waterjet propulsion device when the waterjet propulsion device operates at the small flow rate conditions.
Can Luo +6 more
doaj +1 more source
Cooled miniature pressure transducers effective at high temperatures [PDF]
, 1968 Miniature pressure transducers in compact water-cooled mounts are placed in hotter and more confined environments than previously possible. It quantitatively measures high frequency total pressure fluctuations resulting from rotating stall in an axial ...
Armentrout, E. C.
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Tidal interaction in binary black hole inspiral [PDF]
, 2001 In rotating viscous fluid stars, tidal torque leads to an exchange of spin and orbital angular momentum. The horizon of a black hole has an effective viscosity that is large compared to that of stellar fluids, and an effective tidal torque may lead to ...
A. Buonanno +21 more
core +2 more sources
Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source