摘要:
The present invention provides a method for designing a frequency-shifting isolator system that includes selecting, an impact absorption envelope; a geometry for the isolator mount system; and an elastomeric dampening material formed in the selected geometry. The isolator mount system is preferably configured to shift frequencies at predetermined displacements upon impact, at or before the system attains resonance.
摘要:
A VCSEL settling fixture provides for a plurality of VCSEL chip packages to be selectively tested within a burn-in or environmental chamber having a remote pendant controller. The settling fixture includes a mounting frame including a plurality of recesses and throughbores for positioning and aligning the VCSEL's on the mounting frame. The mounting frame further includes a plurality of terminal blocks in proximity to the recesses for interconnecting the mounting frame with the controller. An activation system including a plurality of electrical contacts electrically connects the individual VCSEL chip packages with the terminal blocks so that the controller can selectively trigger a laser output from the VCSEL chip package.
摘要:
A method of integrating an optoelectronic device, for example a vertical cavity surface emitting laser, onto the electronic substrate of a parallel optical transceiver package by positioning and maintaining the exact relative alignment of the optoelectronic device relative to the electronic substrate for application of adhesive and curing. The method includes the utilization of a multi-piece fixture which clamps the elements into position and maintains position throughout the curing process. Alternatively, the fixture can comprise a unitary assembly for clamping the elements into position and maintaining their position throughout the curing process.
摘要:
Shock mounts are described that provide improved shock and vibration isolation compared to existing shock mounts. The shock mounts utilize zero-overlap elastomeric mount technology designed to provide more effective shock and vibration isolation. The shock mounts described herein can be used to mount any objects in which it is desired to isolate the objects from shocks and vibrations including, but not limited to, equipment and large mass objects on military and commercial vessels.
摘要:
A low noise method and apparatus with the apparatus including a hood for mounting over an exhaust outlet duct to capture a fluid stream and then redirect the fluid stream to a fluid outlet in the hood through the use of smoothly curving duct that maintains the fluid flowing therethrough in a laminar flow condition with the inlet and outlet positioned such that there is no line of sight between the exhaust outlet duct and the fluid outlet duct in the hood.
摘要:
A device and method that exchanges heat is described, which includes intaking air into a chamber and then forcing air from holes of a heat conducting surface that fluidly communicate with the chamber to create a toroidal mass of air resulting from vortex shedding. A pump, for example a flexible diaphragm, is employed to increase and decrease a volume of the chamber in communication with the holes. When the volume of the chamber is increased (air intake), a boundary layer of heat breaks up by the heat conducting surface which helps to improve cooling. When the volume of the chamber is decreased, jets of air are discharged from the holes to create vortices of air that cause vortex shedding and can also help disrupt the boundary layer of heat.
摘要:
An engine muffling system includes a Helmholtz tuning chamber to meet the changing acoustic muffling requirements associated with multiple applications. The engine muffling system in one embodiment includes at least one chamber configured as a plenum device, typically filled with an aggregate material or acoustic absorbing particulate material(s) in order to produce a tortuous path through the at least one chamber.