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MIL-HDBK-501

作者:标准资料网 时间:2024-05-10 17:43:18  浏览:9175   来源:标准资料网
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MIL-HDBK-501, DEPARTMENT OF DEFENSE HANDBOOK PORTABLE INFORMATION CARRIER. This handbook is written for the Department of Defense (DoD) through the Assistant Secretary of Defense (ASD) for Command, Control, Communications and Intelligence (C3I). It was designed to build consensus on DoD standard guidance for a multi-technology smart card. This document was composed through a standards working group which was open to all DoD components and agencies and reformatted as a military handbook. The goal of this handbook is to establish a common DoD vision for the integration and implementation of smart card technology for DoD. This handbook is for guidance only. This handbook cannot be cited as a requirement. If it is, the contractor does not have to comply. The guidance provides the common elements of a multi-technology, multi-application smart card. The identification of these common elements form a baseline for use of a cross-service, multi-application integrated circuit card across all functional areas of DoD having to deal with personal information transferral. The program relationships and interdependencies will be the responsibility of DoD components that will implement this guidance. The intent is to assist in the planning and initiation of a single standard for smart card usage across DoD to prevent separate and incompatible implementation of smart card technologies. The multi-technology aspect of the Portable Information Carrier (PIC) guidance provides an interface to existing applications using a variety of reader equipment. It also provides for selection of the most cost-effective reader technique for new applications, while allowing a single card to interface with multiple applications using different reader equipment. The uniqueness of the PIC is the ability to update and completely erase information contained on the chip of the card, unlike the use of barcodes, embossing, and magnetic stripes.
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【英文标准名称】:ThrustBearingsofBallandCylindricalRollerTypes-InchDesign
【原文标准名称】:止推滚珠和圆筒形滚柱轴承.米制设计
【标准号】:ANSI/ABMA24.2-1989
【标准状态】:现行
【国别】:美国
【发布日期】:1989
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:滚珠轴承;球;轴承;圆柱滚子;设计;精密度;滚柱轴承;滚动轴承;止推轴承
【英文主题词】:Ballbearings;Balls;Bearings;Cylindricalrollers;Design;Precision;Rollerbearings;Rollingbearings;Thrustbearings
【摘要】:Coversidentificationcode,symbolsandnomenclature,boundarydimensions,tolerances,andmountingdimensions(externaldimensionsonly).
【中国标准分类号】:J11
【国际标准分类号】:21_100_20
【页数】:
【正文语种】:英语


Product Code:SAE ARP4148
Title:Gas Turbine Engine Real Time Performance Model Presentation for Digital Computers
Issuing Committee:S-15 Gas Turbine Perf Simulation Nomenclature And Interfaces
Scope:This SAE Aerospace Recommended Practice (ARP) provides guidance for the presentation of gas turbine engine transient performance models with the capacity to be implemented as digital computer programs operating in real time and is intended to complement AS681.Such models will be used in those applications where a transient program must interface with physical systems. These applications are characterized by the requirement for real time trransient response. These models require attention to unique characteristics that are beyond the scope of AS681. This document is intended to facilitate the development of mathematical models and the coordination of their requirements with the user. It will not unduly restrict the modeling methodology used by the supplier. The objective of this document is to define a recommended practice for the delivery of mathematical models intended for real time use. Models used in this application may also be contained in deliverable computer programs covered by AS681.

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