Results 101 to 110 of about 10,556 (246)

Low-Speed Fan Noise Attenuation from a Foam-Metal Liner [PDF]

A foam-metal liner for attenuation of fan noise was developed for and tested on a low-speed fan. This type of liner represents a significant advance over traditional liners, due to the possibility of placement in close proximity to the rotor.
Jones, Michael G., Sutliff, Daniel L.
core   +1 more source

Dynamic modeling and simulation of rigid-flexible coupling cable system by absolute nodal coordinate formulation. [PDF]

Sci Rep, 2022
Wang X, Zhao J, Wang H, Song H, Luo Z, Han Q.   +5 more
europepmc   +1 more source

Critical Flow Velocity Analysis of Multi-Span Viscoelastic Micro-Bending Irrigation Pipelines

Agriculture
Irrigation pipelines are critical agricultural hydraulic facilities that often develop minor bending defects due to ground settlement or improper installation.
Sihao Wu, Bo Fan, Jianhua Cao, Suwei Xiao, Yuhe Cao   +4 more
doaj   +1 more source

Rotating Rake Turbofan Duct Mode Measurement System [PDF]

An experimental measurement system was developed and implemented by the NASA Glenn Research Center in the 1990s to measure turbofan duct acoustic modes. The system is a continuously rotating radial microphone rake that is inserted into the duct.
Sutliff, Daniel L.
core   +1 more source

Spartan Daily, February 3, 1947 [PDF]

, 1947
Volume 35, Issue 74https://scholarworks.sjsu.edu/spartandaily/8950/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +2 more sources

IMPROVED FINITE ELEMENT TRANSFER MATRIX METHOD OF PLANE BEAM ELEMENTS USING THE ABSOLUTE NODAL COORDINATE FORMULATION

Jixie qiangdu, 2016
For the dynamics problems of flexible beams with large overall motion,nonlinear element dynamic equations are established,adopting the absolute nodal coordinate formulation（ ANCF）.
QIAN ShuangLin, HE Bin, YAO LiKe, NI ChunHai, LV JianDong   +4 more
doaj  

Dynamics and experiments of a tendon-actuated flexible robotic arm for capturing a floating target

Defence Technology
Reusable and flexible capturing of space debris is highly required in future aerospace technologies. A tendon-actuated flexible robotic arm is therefore proposed for capturing floating targets in this paper.
Xin Xia, Yunpeng Sun, Jialiang Sun
doaj   +1 more source

Linear Parameter-Varying Control of a Ducted Fan Engine [PDF]

, 1995
Parameter-dependent control techniques are applied to a vectored thrust, ducted fan engine. The synthesis technique is based on the solution of Linear Matrix Inequalities and produces a controller which achieves specified performance against the worst ...
Bendotti, Pascale, Bodenheimer, Bobby, Kantner, Michael   +2 more
core   +1 more source

Coupling Characteristics of Lubrication and Flexible Multibody Dynamics of Piston-Liner Pairs in Diesel Engines

Shanghai Jiaotong Daxue xuebao
In this paper, a new piston-liner tribo-dynamic coupling model is proposed to study the dynamics and lubrication characteristics of the piston-liner friction pair of four-stroke vehicle diesel engines.
ZHAI Xumao, TIAN Xinwei, ZHANG Chuanbin, LI Yujuan, LIU Shuo, CUI Yi
doaj   +1 more source

Natural Frequencies of a Tethered Satellite System

Applied Sciences
This study investigated the natural frequencies of a tethered satellite system to enhance stability and operational reliability. Tethered satellite systems provide many advantages for space missions but exhibit inherently complex dynamics due to the ...
Yihun Yoon, Woojae Jang, Jintai Chung
doaj   +1 more source