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Determination of stress concentration factors using experimental methods
(Virginia Polytechnic Institute and State University, 1988)
Several experimental methods are examined for stress concentration factor determination. Tests are performed on a chosen 2-D specimen using strain gages, brittle coating, brittle specimen failure, photoelasticity, and Moire ...
The stability of an aircraft during the landing roll
(Virginia Polytechnic Institute and State University, 1983)
The object of this thesis is to determine the directional stability of a tricycle-geared aircraft during the landing roll. The motion of the aircraft is simulated by a computer program based on the appropriate equations ...
Carrier-facilitated oxygen transport in flowing blood
(Virginia Polytechnic Institute and State University, 1982)
An experimental investigation was done on oxygen transfer into a steady, laminar flow of whole blood and hemoglobin solutions. The effects of facilitation and augmentation on the bulk transfer were studied. The transfer ...
Design and construction of a double-octahedral variable geometry truss manipulator
(Virginia Polytechnic Institute and State University, 1989)
This thesis deals with the design and construction of a variable geometry truss (VGT) of the double-octahedral (pyramid-pyramid) geometry. The truss is expected to be the focus of several experimental research projects. ...
A new method for calculating the flow field in a dump combustor
(Virginia Polytechnic Institute and State University, 1984)
An elliptic/parabolic procedure for solving the flow field in a dump combustor is described. The elliptic calculation is used at the dump combustor entrance and a parabolic calculation downstream. The calculations are ...
A reduced-order crawler crane model with active control to attenuate the transient vibrations
(Virginia Polytechnic Institute and State University, 1982)
The nonlinear differential equations describing the motion of a crawler crane in a plane are formulated by applying Lagrange's equation to the system kinetic energy, potential energy and virtual work. The transient response ...
Head augmentation in hydraulic turbines by means of draft tube ejectors
(Virginia Polytechnic Institute and State University, 1982)
The use of draft tubes with annular injection was investigated with respect to low-head applications. A numerical model was developed and refined to fit the data from two laboratory test models. The latter model was a ...
Simplified real-time PAH measurement techniques
(Virginia Polytechnic Institute and State University, 1982)
The increased use of residential wood and coal stoves in recent years h.as caused a growing concern for polycyclic aromatic hydrocarbon (PAH) emissions from these stoves. Design of stoves that reduce PAH emissions has been ...
An investigation of the three-dimensional vibration characteristics of a rotor-bearing system using the finite element method
(Virginia Polytechnic Institute and State University, 1982)
A vibration analysis of a high-speed rotor-bearing system using the finite element is presented. Models were developed to study the effect of rotor mass and stiffness, support bearing stiffness, and bearing pedestal stiffness ...
Modeling the flash gate board for water storage and flood control
(Virginia Polytechnic Institute and State University, 1988)
The height of an overflow dam must be designed low enough to prevent the reservoir water level from exceeding a flood plain during flooding conditions. Because of this constraint, much of the available water storage area ...