Search
Now showing items 661-670 of 714
HESCAD - an interface between HESCOMP and CADAM for the generation of helicopter models
(Virginia Polytechnic Institute and State University, 1985)
3-D Interactive CADAM allows for easier construction, modification, analysis, and display of 3-D geometry surfaces and wire-frames. This research forms a basis for preliminary aircraft geometric design using the CADAM ...
An absolute calorimeter for the measurement of high radiation flux
(Virginia Polytechnic Institute, 1960)
The object of this investigation was to determine the optimum receiver configuration to be used in an absolute, high radiation flux, calorimeter.
Three receivers of different configuration were designed, fabricated, and ...
Measurement of three-dimensional horseshoe vortex flow in a duct
(Virginia Polytechnic Institute and State University, 1983)
This thesis presents measurements of the three-dimensional flow due to the horseshoe vortex formed at the junction of a flat wall and the leading edge of a Rankine half body. The half body is located between the parallel ...
Shape control of high degree-of-freedom Variable Geometry Truss manipulators
(Virginia Polytechnic Institute and State University, 1989)
Variable Geometry Trusses (VGT’s) can be used as the fundamental building blocks in constructing long-chain, high degree-of-freedom manipulators. This thesis focuses on the kinematics of two such manipulators. It also ...
An investigation of friction and wear mechanisms in selected thermoplastics
(Virginia Polytechnic Institute and State University, 1983)
These studies developed from Scanning Electron Microscope (SEM) observations of abrasive wear of a polymer disk sliding against metal asperity models. The investigator was unable to observe actual particle formation but ...
An automated probe for thermal conductivity measurements
(Virginia Polytechnic Institute and State University, 1987)
A transient technique was validated for making thermal conductivity measurements. The technique incorporated a small, effectively spherical, heat source and temperature sensing probe. The actual thermal conductivity ...
Effect of relative humidity on the fatigue characteristics of mild steel in reversed torsion
(Virginia Polytechnic Institute and State University, 1972)
Reversed torsion fatigue tests were conducted on both notched and unnotched specimens of SAE 1018 steel. The tests were made on a Sonntag Universal Fatigue Testing Machine at the rate of 1800 stress cycles per minute. The ...
Effect of vibration on heat transfer from wires in parallel flow
(Virginia Polytechnic Institute, 1961)
The primary objective of this Investigation was to determine the heat transfer rate and characteristics of three vibrated wires In a parallel flow. A simple experimental apparatus was constructed with which to pursue the ...
A study of oil-film performance between piston rings and cylinder wall by the electrical measurements
(Virginia Polytechnic Institute, 1961)
The object of this thesis was to investigate some of the factors that night effect the oil film performance between piston rings and cylinder walls.
An apparatus was constructed to measure the instantaneous changes in ...
A finite element mesh optimization procedure using a thermal expansion analogy
(Virginia Polytechnic Institute and State University, 1985)
Finite element optimum meshes are synthesized by the use of thermal expansion principles in conjunction with an analogous temperature field computed from the element strain energy contents. Elements having high strain ...