摘要:
A method and apparatus are provided for forming elongated composite structural members with a desired cross-sectional geometry as taken transverse to the length of the member. An apparatus may include a base with a substantially elongated mandrel mounted thereon. One or more rollers configured to at least partially complementarily engage the mandrel are configured to roll over and press one or more plies of composite material onto the mandrel. The mandrel may be disposed on a rotary table and configured to exhibit a curved elongated geometry to form at least partially curved or arcuate elongated members. The present invention enables the formation of elongated structural members from resin impregnated materials while maintaining the materials in a substantially uncured state. The formed members may then be cocured with a skin or other composite structure.
摘要:
A flashlight has a remote switch receptacle centrally located in a push button in a tail cap assembly that allows a user to control the flashlight by pressing the push button or a remote plug inserted in the receptacle or by actuating the remote switch.
摘要:
Reconfigurable direct radio frequency (RF) bandpass sampling receivers are disclosed that utilize analog interpolation filters to improve performance. The addition of the analog interpolation filter to the bandpass sampling receiver allows the quantization clock to be de-coupled from the RF sampling clock. As such, the quantization can be performed at a much slower rate than the initial RF sampling allowing the final analog bandwidth to be much narrower than the bandwidth of the first stage filter located before the high-speed sampler. The combination of a tunable bandpass filter, tunable bandpass sample clock and analog interpolation filter followed by a further stage of sampling and quantization at a slower rate than the bandpass sample clocking, therefore, provides significant advantageous by de-coupling the quantization sample rate from the high-speed sample rate. If desired, the analog interpolation filter may also be tunable. Other variations and implementations are also described.
摘要:
A method of manufacturing a low-moisture penetrating decorative floor surface. The completed floor surface has an appearance of a solid granite slab floor with greater durability. The floor surface has a smooth, flat appearance and can be manufactured in different shapes. The floor surface may be formed over a wood or concrete sub-floor and includes a self-leveling, cementous, low moisture penetrating material to which suitable colorants may be added. The cementous material comprises a topping and silicate-based sealant mixture that is mixed together and poured and leveled over the sub-floor to a desired height. Flakes of contrasting material is then sprinkled over the top surface of the mixture to create a decorative appearance. After drying, the surface is finely ground to a smooth finish. A coat of silicate-based sealant is then applied to the surface that penetrates the porous surface to create a low moisture emitting surface The surface is then ground to a fine surface and rinsed.
摘要:
A system and method for testing telescope optics are disclosed. The telescope optics can be testing in-situ, thus more accurately revealing the as-used optical conditions. The optical conditions are input to a test system which, by objective analysis, reveals a condition of the optics and an indication of the need for corrective action. A test bench for testing optics and for validating the test system using modeled telescope optics is also disclosed.
摘要:
A fiber redirect system for use with a multi-axis robotic wrist and fiber placement system and methods of using the same are provided. The fiber redirect system may include one or more redirect mechanisms configured to alter the path of one or more fiber tows fed from a creel assembly to a fiber placement head. The redirect mechanism may be located and configured so as to be centered about either the intersection of the pitch and yaw axes of the robotic wrist or the intersection of the yaw and roll axes of the robotic wrist. In one exemplary embodiment, a first redirect mechanism is centered about the intersection of the pitch and yaw axes, a second redirect mechanism is centered about the intersection of the yaw and roll axes and a third redirect mechanism may be centered about the roll axis.
摘要:
A cross arm utility pole guarding device for preventing raptor nesting is described. The device includes housing of non-conductive, non-sticky, preferably clear material, having an ultra violet protective layer with a sloped top to prevent debris from accumulating at the top of the housing. The housing is preferably connected by screwing the sides of the housing into and parallel to the cross arms of the utility pole. The method of preventing raptor nesting is by attaching the housing as stated above, parallel to the cross arms of the utility pole.
摘要:
A system is disclosed for generating a search result list in response to a search request from a searcher using a computer network. A first database is maintained that includes a first plurality of search listings. A second database is maintained that includes documents having general web content. A search request is received from the searcher. A first set of search listings is identified from the first database having documents generating a match with the search request and a second set of search listings is identified from the second database having documents generating a match with the search request. A confidence score is determined for each listing from the first set of search listings wherein the confidence score is determined in accordance with a relevance of each listing when compared to the listings of the second set of search listings. The identified search listings from the first set of search listing are ordered in accordance, at least in part, with the confidence score for each search listing.
摘要:
A system and method for testing telescope optics are disclosed. The telescope optics can be testing in-situ, thus more accurately revealing the as-used optical conditions. The optical conditions are input to a test system which, by objective analysis, reveals a condition of the optics and an indication of the need for corrective action. A test bench for testing optics and for validating the test system using modeled telescope optics is also disclosed.
摘要:
A system and method for testing telescope optics are disclosed. The telescope optics can be testing in-situ, thus more accurately revealing the as-used optical conditions. The optical conditions are input to a test system which, by objective analysis, reveals a condition of the optics and an indication of the need for corrective action. A test bench for testing optics and for validating the test system using modeled telescope optics is also disclosed.