摘要:
The invention relates to a laser light beam delivery system for delivering a laser light beam from a source remote from the laser originating the light. The delivery system consists of an optical fiber having a double taper, i.e., a taper portion at each end with the fiber tapering at the input end and at the output end to a diameter substantially greater than the actual diameter of the fiber. This permits high power transmission capabilities in as much as the greater diameter portions distribute the average energy such that no damage to the fiber is presented.
摘要:
The invention provides a system for passive measurement of atmospheric temperature using a passive direction detector for detecting the energy of a narrow wavelength band emanating from a volume of atmospheric gas. The resulting signal can be associated with an effective temperature. The effective temperature can be associated with an effective range. The system generates a temperature map which can determine, at predetermined time intervals, atmospheric temperatures in an azimuth plane associated with a predefined range from the detector. The temperature map can then be used to calculate temperature gradients that in turn can be used to compute the average Richardson number over an atmospheric layer and other atmospheric conditions to predict the presence of clear air turbulence.
摘要:
An active imaging system for viewing targets with a high degree of range resolution of approximately one foot. The imaging system utilizes a laser pulse which passes through an electro-optical pulse slicer which creates a sharp leading edge and/or a sharp falling edge on the laser pulse. The laser pulse travels to the target under observation, illuminates and reflects off of the target and returns to a camera. A target is viewed only during the time all or a portion of the returning laser pulse overlaps the time the camera shutter gate is open. The imaging system is particularly suited for determining depth information about a target by varying the time relationship when the returning laser pulse is received by the camera.
摘要:
A local fire shield is provided for protecting an attachment point of a fireproof system in an engine during a fire event. The local fire shield includes a mounting plate mounted on the attachment point; and a cover coupled to the mounting plate for covering the attachment point during the fire event.
摘要:
A fiber-based acoustic treatment material is provided. The material includes between about 3% and about 25% by weight of fibrillated microfibers, between about 20% and about 75% by weight of reinforcement microfibers, and between about 15% and about 60% by weight of a binder. Methods of making the material are also provided.
摘要:
Methods are provided for repairing a defect in a noise suppression panel. In an embodiment, by way of example only, a method includes the steps of removing a section of the noise suppression panel that includes the defect to thereby create a cavity, forming an insert configured to mate with the cavity, the insert comprising an acoustic damping material comprising a plurality of fibers and a binder, and placing the insert within the cavity.
摘要:
A mobile support system for a hand-held laser welding wand includes a movable cart, a laser source, a fluid source, and a filler medium supply source. The laser source is mounted on the movable cart and is configured to supply laser light for the hand-held laser welding wand. The fluid source is mounted on the movable cart and is configured to supply cooling fluid for the hand-held laser welding wand. The filler medium supply source is mounted on the movable cart and is configured to supply a filler medium for use by the hand-held laser welding wand. The mobile support system is transportable to areas remote from a work shop environment, and provides stand-alone support for the hand-held laser welding wand.
摘要:
A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The gap between the two may provide space through which inert gas may flow. Laser light from a remote source shines through the nozzle's central aperture. The nozzle aperture may be circumscribed by powder channel outlets aligned upon a working focal point coincident with the laser beam to treat a workpiece. A proximity sensor may enable selective welding torch operation according to the presence of a workpiece.
摘要:
A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The gap between the two may provide space through which inert gas may flow. Laser light from a remote source shines through the nozzle's central aperture. The nozzle aperture may be circumscribed by powder channel outlets aligned upon a working focal point coincident with the laser beam to treat a workpiece. A proximity sensor may enable selective welding torch operation according to the presence of a workpiece.
摘要:
A local fire shield is provided for protecting an attachment point of a fireproof system in an engine during a fire event. The local fire shield includes a mounting plate mounted on the attachment point; and a cover coupled to the mounting plate for covering the attachment point during the fire event.