Browse Topic: Finishing
This specification defines the requirements for A286 CRES T-bolts and eye bolts, with room temperature tensile strength of a minimum of 160000 psi, for use with clamps and V-band couplings at 1000 °F maximum ambient temperature.
This standard defines the common nonconformity data definition and documentation that shall be exchanged between an internal/external supplier or sub-tier supplier, and the customer when informing about a nonconformity requiring formal decision. The requirements are applicable, partly or totally, when reporting a product nonconformity to the owner or operator, as user of the end item (e.g., engine, aircraft, spacecraft, helicopter), if specified by contract. Reporting of nonconformity data, either electronically or conventionally on paper, is subject to the terms and conditions of the contract. This also includes, where applicable, data access under export control regulations.
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings up through 4.000 inches (101.60 mm) in diameter or least distance between parallel sides and stock of any size for forging, heading, or flash welded rings (see 8.6).
Finding the right custom extrusion and plastics company to manufacture and provide a key custom component to your end-product needs can often seem a daunting task. With an abundance of responses to a Google query or a review of trade publications, the effort can be a great example of the so-called paradox of choice. Less is sometimes more, and being able to filter down your choices intelligently while understanding what makes the plastics manufacturing industry tick may help relieve purchaser anxiety and complexity.
The development of a conformal nanotube process is enabling for many applications in solar physics and space astrophysics (e.g., direct detection and imaging of exoplanets). Coronagraphs are key heliophysics instruments because they image coronal mass ejections (CMEs), which are the most energetic phenomena on the Sun. CMEs have wide-ranging impact on the heliosphere, from interplanetary spacecraft to Earthorbiting satellites, communications, and astronaut safety; in short, they are major drivers of space weather. In a typical space-based coronagraph, an external occulter blocks light from the disk of the Sun so that the corona (about a million times dimmer) can be imaged. The occulter must suppress both diffracted light and stray light.
Thin, segmented mirrors have been fabricated from monocrystalline silicon blocks. The material is economically viable, and is virtually free of internal stress because of its nearly perfect crystalline structure. The mirror surfaces will first be accurately figured and finished on thick silicon blocks, then sliced off at the desired thickness by wire electro-discharge machining. A finishing process has been conceived in which existing mirror-finishing processes are adapted to be capable of quickly and accurately figuring and finishing damage-free, segmented, monocrystalline silicon mirrors in a cost-efficient manner.
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