道路交通工具航空动力学测试的测试方法及程序

[中文适用范围]： 本 SAE 信息报告的范围仅限于风洞测试，尽管人们认识到道路车辆空气动力学特性的许多方面可以在其他测试设施（例如水箱）中或特别是在道路上进行研究。例如，滑行测试通常用于确定空气动力阻力（单独或作为总阻力的一部分），人工阵风发生器用于研究车辆对侧风阵风的敏感性。本报告还排除了道路车辆的气候风洞测试。该报告涵盖了汽车测试风洞的空气动力学要求，以及所需的设施设备以及影响测试车辆或模型的要求。这里描述的测试方法和程序包括六分量力测量以及车辆/模型表面和周围流场上的压力和速度测量。 [外文原描述]： The scope of this SAE Information Report is confined to wind-tunnel testing, although it is recognized that many aspects of the aerodynamic characteristics of road vehicles can be investigated in other test facilities (such as water-tanks) or, especially, on the road. For example, coastdown testing is often used to determine aerodynamic drag (either in isolation or as part of the total resistance), and artificial gust generators are used to investigate the sensitivity of vehicles to cross-wind gusts.Also excluded from the present Report are climatic wind-tunnel tests of road vehicles, which are defined in more detail in Section 3 .The Report covers the aerodynamic requirements of a wind-tunnel for automotive testing, together with the facility equipment needed and the requirements affecting the test vehicle or model. The test methods and procedures described here include those for six-component force measurements and measurements of pressures and velocities both on the vehicle/model surface and in the surrounding flow-field.Flow visualization techniques are outlined, with reference to the detailed coverage in a related SAE Information Report (2). In addition, the reduction, analysis, and presentation of wind-tunnel data are considered, with further references to associated SAE Information Reports (3,4) on corrections to be applied for wind-tunnel blockage effects. Finally, methods are discussed for the validation of the wind-tunnel data, e.g., by tunnel-to-road correlation studies.As already indicated, this document has been prepared in conjunction with a number of other SAE Information Reports and Recommended Practices (1-5), each of which provides greater detail than is given here on its particular aspect of automotive aerodynamic testing.Cross Reference: 680121,750704,810187,820371,820375,820377,850285,850286,850287,850288,870243,870244,870245,870246,870249,870374,880246,880248,880249,880250,880252,890369,890370,900321,HSJ1566,J1252_201207,J1594,J2085