Product Code:SAE AIR4994 Title:High Pressure Pneumatic Compressors Users Guide for Aerospace Applications Issuing Committee:A-6c6 Power Sources Committee Scope: Gas compressors (air and other compressible fluids) have been used sporadically since the 1940's for various utility functions in aerospace applications. They have been used to provide power to gun purge and drive systems, engine or APU starters (recharge accumulators), reservoir pressurization, cockpit pressurization, braking systems, canopy seals, engine control divides, landing gear activation, and boosted flight controls (see Table 1). In current state-of-the-art aircraft, most pneumatic system power is extracted from a stage of compression in the turbo-jet engine. As more and more demands are put on new generation engines for fuel economy and performance there is an increasing need for a new source of pneumatic power. This document is intended to describe current state-of-the-art technology in compressors, define the limitations, discuss enhancements needed and attempt to predict the needs of the future.【英文标准名称】:Processmeasurementandcontroldevices-Generalmethodsandproceduresforevaluatingperformance-Part4:Evaluationreportcontent(IEC61298-4:1995);GermanversionEN61298-4:1995 【原文标准名称】:过程测量和控制装置.评定运行特性的一般方法和程序.第4部分:评定报告内容 【标准号】:EN61298-4-1995 【标准状态】:现行 【国别】: 【发布日期】:1996-07-01 【实施或试行日期】: 【发布单位】:欧洲标准学会(EN) 【起草单位】: 【标准类型】:() 【标准水平】:() 【中文主题词】:观察;方法;报告;含量;过程控制;电气工程;控制装置;工业流程测量;评定;工作性能;试验报告;测量仪器;控制设备 【英文主题词】:Automation;Contents;Controldevices;Controlequipment;Controlsystems;Electricalengineering;Evaluationsheet;Evaluations;Industrialprocessmeasurement;Measuringinstruments;Methods;Observation;Performanceinservice;Powermeasurement(electric);Process;Processcontrol;Reports;Testreports;Testing 【摘要】: 【中国标准分类号】:N10 【国际标准分类号】:25_040_40 【页数】:8P;A4 【正文语种】:英语