Results 111 to 120 of about 18,727 (183)

Evaluation of a series hybrid thrust bearing at DN values to three million. 2: Fabrication and testing [PDF]

Results of tests made to determine the experimental performance of a series hybrid bearing are reported. The bearing consists of a 150 mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of ...
Eusepi, M., Winn, L. W.
core   +1 more source

Preliminary report on in-flight measurement of rotor hub drag and lift using the RSRA [PDF]

The Rotor Systems Research Aircraft (RSRA) is a compound helicopter that was test flown as a fixed wing aircraft, with the main rotor blades removed and the rotor hub installed.
Acree, C. W., Jr.
core   +1 more source

Design and Simulation of Internal Planetary Wheel Plunger-Type Ring Molding Machine for Biomass Pellets

BioResources
Key components of the existing external meshing dorsal spine plunger-type molding machine were modeled in three dimensions, and the fatigue life analysis of the molding machine spindle was carried out by using Ansys software.
Xuehong De, Bowen Zhang, Jingyan Zhao, Wenbin Guo, Jianchao Zhang, Jianwen Kang, Haoming Li   +6 more
doaj   +2 more sources

Design and fabrication of prototype system for early warning of impending bearing failure [PDF]

A test program was conducted with the objective of developing a method and equipment for on-line monitoring of installed ball bearings to detect deterioration or impending failure of the bearings.
Chen, H. M., Meacher, J.
core   +1 more source

Modeling of thermal errors for dual-spindle turning-milling compound machine tools based on hybrid networks. [PDF]

Sci Rep
Lu W, Wang J, Zhou J, Deng X, Wu H, Zhang L.   +5 more
europepmc   +1 more source

Stiffness optimization of electric spindle performance based on multi-layer perceptron integrated Bayesian. [PDF]

Sci Rep
Dong X, Sun F, Li Y, Yang G, Liu L, Xu F, Zhao H, Zhang Q, Zhou R.   +8 more
europepmc   +1 more source

Evaluation of a series hybird thrust bearing at DN values to three million. 1: Analysis and design [PDF]

The analysis and design are presented of a hybrid bearing consisting of a 150-mm ball bearing and a centrifugally actuated, conical, fluid film bearing fitting an envelope with an outer radius of 86.4 mm (3.4 in.) and an inner radius of 71 mm (2.8 in ...
Eusepi, M., Gu, A., Winn, L. W.
core   +1 more source

Comparative Ultrastructure and Ecological Adaptation of Adhesive Setae in Four Species of Longhorn Beetles (Coleoptera). [PDF]

Insects
Liu Z, Lu YY, Lin MY.
europepmc   +1 more source

Space station mobile transporter [PDF]

The first quarter of the next century will see an operational space station that will provide a permanently manned base for satellite servicing, multiple strategic scientific and commercial payload deployment, and Orbital Maneuvering Vehicle/Orbital ...
Marks, Geoff W., Renshall, James, Young, Grant L.   +2 more
core   +1 more source

Intelligent Soft Sensor for Spindle Convective Heat Transfer Coefficient Under Varying Operating Conditions Using Improved Grey Wolf Optimization Algorithm. [PDF]

Sensors (Basel)
Pian J, Li G.
europepmc   +1 more source