Stories
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Briefs: Mechanical & Fluid Systems
Rigid, guyed masts of a proposed type for supporting meteorological instruments would be designed to withstand considerably stronger winds than those conventionally used. The proposed fairings...
Briefs: Mechanical & Fluid Systems
Permanent-magnet rotary bearings with ferrofluid stabilization in the axial degree of freedom are undergoing development. These bearings are totally passive, yet stable in all degrees of...
Briefs: Mechanical & Fluid Systems
A method of automated diagnosis of helicopter gearboxes involves processing of selected features of digitized outputs of vibration sensors via structure-based connectionist networks...
Briefs: Mechanical & Fluid Systems
A Stirling cooler is a mechanical system that approximates the ideal gas cycle. Often associated with airborne or portable cooling applications that require compact design and low input power,...
Briefs: Mechanical & Fluid Systems
Weightless Environment Training Facility Inertial Training Spheres (WETFITSs) are proposed neutrally buoyant training tools that would be used in NASA's Weightless Environment Training...
Briefs: Mechanical & Fluid Systems
Applying Controlled Pressure Distributions to Complex Curved Surfaces
A technique for applying controlled test pressures to curved surfaces is based on a principle similar to that of a compartmented pilot's or astronaut's pressure suit. The technique involves the use of airbags that accommodate geometric complexity in both the surface under test...
Briefs: Mechanical & Fluid Systems
Equations for Failure Modes of Mechanical Systems
A report presents information compiled from a search of the literature on failure modes of mechanical systems. The report was written to provide a reference base for the application of first-order reliability methods to mechanical systems in the development of a system-level design methodology. In...
Briefs: Mechanical & Fluid Systems
There has been some success in continuing efforts to increase the service lifetimes of the guide rolls in hot-roll-slitter machines in the steel industry. In these machines, hardened knives are used...
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