本报告涵盖了在高空试验设施（ATFs）中进行的发动机试验，其主要目的是确定模拟高空飞行条件下的稳态推力，作为飞行推力确定过程的一部分。因此，它是对SAE E-33技术委员会发布的AIR1703和AIR5450的补充。通过此类试验确定的总推力可用于生成其他推力相关参数，这些参数通常用于推进系统性能评估。例如:净推力、比推力和排气喷嘴系数。 该报告提供了ATF的总体描述，包括所有主要功能。这些是:测试单元空气供应系统。它控制入口压力，包括流量校正、湿度和温度调节。进气管和滑动接头。请注意，本报告仅涵盖进气管连接至发动机的情况，而非自由喷射试验。推力支架力测量系统测试单元单元排气系统测量系统该报告提供了有关设施如何运行的详细技术信息，包括:计划规划指南测试优化飞行条件设置和控制评估数据技术讨论提供了以下基本物理信息: 空气质量流量测定进气管和滑动接头中条件的测定推力和相关参数的验证将数据定向到标称飞行条件测量不确定性本报告的初始版本主要涉及拟用于亚音速运输机的发动机的ATF测试。报告的未来修订将包括与超音速飞机发动机测试相关的更多内容，包括与此类飞机相关的更宽和更高的飞行包线，以及这些飞行条件引起的技术问题。

This report covers engine tests performed in Altitude Test Facilities (ATFs) with the primary purpose of determining steady state thrust at simulated altitude flight conditions as part of the in-flight thrust determination process. As such it is complementary to AIR1703 and AIR5450, published by the SAE E-33 Technical Committee. The gross thrust determined using such tests may be used to generate other thrust-related parameters that are frequently applied in the assessment of propulsion system performance. For example: net thrust, specific thrust, and exhaust nozzle coefficients.The report provides a general description of ATFs including all the major features. These are:Test cell air supply system. This controls the inlet pressure and includes flow straightening, humidity and temperature conditioning.Air inlet duct and slip joint. Note that the report only covers the case where the inlet duct is connected to the engine, not free jet testing.Thrust stand force measurement systemTest cellCell exhaust systemMeasurement systemThe report provides detailed technical information on how the facilities are operated, including:Program planning guidelinesOptimization of the testsSetting and control of flight conditionsAssessment of the dataA technical discussion provides the underlying physics for:Air mass flow determinationDetermination of the conditions in the inlet duct and slip jointDerivation of thrust and related parametersCorrection of data to nominal flight conditionsMeasurement uncertaintyThe initial issue of this report primarily address ATF testing of engines intended for use on subsonic, transport aircraft. Future revisions to the report will include greater content relevant to the testing of engines for supersonic aircraft, including the wider and higher flight envelopes associated with such aircraft and the technical issues raised by these flight conditions.