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Comparative Analysis of Hydrodynamic Performance for Flapping Hydrofoils Driven by Three Typical Transmission Mechanisms. [PDF]

Biomimetics (Basel)
Hua E, Li S, Wu X, Lin Y.
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Thrust Forces in Underwater Swimming

Human Factors: The Journal of the Human Factors and Ergonomics Society, 1965
Instantaneous and mean static thrust levels were measured for eight underwater swimmers restrained in a submerged force platform. Swimming was examined barefoot and with two types of fins. The main beneficial effect of the fins was to eliminate the substantial negative thrust component associated with barefoot swimming.
R A, Christianson, G, Weltman, G H, Egstrom   +2 more
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The Traceable Calibration of Thrust Stand by Electrostatic Force

Journal of Visualized Experiments, 2022
Micro thrusters have important applications in low-frequency gravitational wave detection, satellite formation, and inter-satellite laser communication, so it is necessary to accurately measure the thrust of micro thrusters with traceability. A thrust stand is a widely used micro thrust measuring device with the advantages of high resolution and large ...
Bin, Wang, Yong, Yang, Zhan, Hu, Yelong, Zheng   +3 more
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Thrust Measurement Using Force Sensitive Resistor

2017 IEEE International Conference on Computational Intelligence and Computing Research (ICCIC), 2017
Mini/micro nozzles are used in digital propulsion systems for generating milli/micro thrust. Such systems are used in satellites for precise control and positioning. The measurement of milli thrust which is of the order of few Newton requires specialized measuring systems.
N. Nageshwar, S.Gokula Krishnaa, S.Lakshmi Narasimhan, M. Venkatesan   +3 more
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Measuring Leg Thrust Forces in the Common Starling

Journal of Experimental Biology, 1996
ABSTRACT We describe the design of a force-transducing perch which measures the reaction forces of small birds taking off and landing. In common starlings, landing forces are lower than take-off forces, because the bird may decelerate prior to landing by using its wings.
, Bonser, , Rayner
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Thrust force characterization of free-swimming soft robotic jellyfish

Bioinspiration & Biomimetics, 2018
Five unique soft robotic jellyfish were manufactured with eight pneumatic network tentacle actuators extending radially from their centers. These jellyfish robots were able to freely swim untethered in the ocean, to steer from side to side, and to swim through orifices more narrow than the nominal diameter of the jellyfish.
Jennifer Frame, Nick Lopez, Oscar Curet, Erik D Engeberg   +3 more
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Evaluation of Subcooled Water Thrust Forces

Nuclear Technology, 1976
Subcooled water thrust forces for use in pipe rupture analyses have been normalized with respect to an enthalpy normalization factor. This normalization is based on comparisons with thrust forces calculated using the Henry-Fauske model, and the answers are within +-3 percent in the range 300 to 2400 psia (21.1 to 168.7 kg/cm/sup 2/).
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Design of a linear vernier permanent magnet machine with high thrust force density and low thrust force ripple

2017 IEEE International Electric Machines and Drives Conference (IEMDC), 2017
This paper introduces a novel linear vernier permanent magnet machine (H-LVPMM) with high force density and low force ripple. The permanent magnets (PMs) on secondary uses Halbach array, which can provide a larger flux density in the air gap than that of the conventional surface-mounted PMs configurations, and the primary is composed of three modules ...
Yongsheng Huo, Ronghai Qu, Yuting Gao, Shaofeng Jia, Xinggang Fan   +4 more
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Increased Jet Thrust from Pressure Forces

Journal of the Aeronautical Sciences, 1950
For ram-jets and turbojets, which operate with low overall jet expansion ratios, it is possible to obtain more thrust with incomplete expansion in the jet nozzle utilizing both pressure and momentum forces than with complete expansion utilizing momentum forces alone.
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Thrust Force Analyses in Drilling FRP Composites

2020
Whenever fiber-reinforced polymer (FRP) composites are drilled to produce a hole, it is necessary to obtain the desired dimensional requirements with minimal surface and sub-surface damage. A number of complications arise in this process, such as multiphase laminated materials (hard reinforced fibers within soft polymer matrix) and complex cutting ...
Tan Chye Lih, Azwan Iskandar Azmi
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