Results 131 to 140 of about 110,391 (248)

The flight robotics laboratory [PDF]

open access: yes
The Flight Robotics Laboratory of the Marshall Space Flight Center is described in detail. This facility, containing an eight degree of freedom manipulator, precision air bearing floor, teleoperated motion base, reconfigurable operator's console, and VAX
Glaese, John R.   +2 more
core   +1 more source

Spin Foam Perturbation Theory [PDF]

open access: yes, 1999
We study perturbation theory for spin foam models on triangulated manifolds. Starting with any model of this sort, we consider an arbitrary perturbation of the vertex amplitudes, and write the evolution operators of the perturbed model as convergent ...
Baez, John C.
core   +3 more sources

ABOUT ACCOUNT OF STRUCTURAL NOISE IN CABINS OF CRANES

open access: yesВестник Донского государственного технического университета, 2018
In operation influence of vibration of elements of a protection of a cabin of the bridge crane on formation of structural noise is considered. Having applied a method of an energy balance expressions of a vibration speed are obtained depending on an ...
S.A. RAZDORSKIJ
doaj  

THE FEATURES OF TRAVELER WITH VACUUM AND SUCTION EQUIPMENT

open access: yesNauka ta progres transportu, 2008
The analysis of real mechanical system of the bridge crane with vacuum-sucker equipment is made and the design scheme for the mathematical model of dynamic processes created on the basis of the analysis is offered.
H. L. Moroz, M. O. Kuklev, B. M. Tovt
doaj  

STRUCTURE AND ROBUST OPTIMIZATION DESIGN BASED ON ADDITIONAL OBJECTIVE FUNCTION OF THE SENSITIVITY

open access: yesJixie qiangdu, 2017
A robust-optimization-design method based on sensitivity’s analysis of the crane metal structure is described. It considers uncertain factors existing in the design of crane metal structure.
HAO FangFang, FAN XiaoNing, ZHI Bo
doaj  

RESEARCH ON DYNAMIC CHARACTERISTICS AND SENSITIVITY ANALYSIS OF L-TYPE GANTRY CRANE BASED ON FINITE ELEMENT METHOD

open access: yesJixie qiangdu, 2016
Bridge crane and gantry crane are the equipments which are the most widely used in lifting field,and it is necessary to study its dynamic characteristics when the gantry crane is designed.
GUO JunCai   +7 more
doaj  

Water immersion facility general description, spacecraft design division, crew station branch [PDF]

open access: yes
The Water Immersion Facility provides an accurate, safe, neutral buoyancy simulation of zero gravity conditions for development of equipment and procedures, and the training of crews.

core   +1 more source

Preliminary definition of a lunar landing and launch facility (Complex 39L) [PDF]

open access: yes
A preliminary definition of a lunar landing and launch facility has been formulated. A permanently manned lunar base and a baseline lunar module are assumed.
Jenson, Eric B.   +2 more
core   +1 more source

EXPERIMENTAL STUDIES OF METAL STRUCTURE LOADS WHEN USING ROLLING WHEELS OF THE NEW DESIGN

open access: yesМашинобудування
DOI: https://doi.org/10.26565/2079-1747-2025-35-07 The article considered the problems of experimental determination of the advantages of running wheels of a new design with elastic inserts. The study was carried out on an operating electric, support,
FIDROVSKA N.   +3 more
doaj  

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