Improving the accuracy of production wind tunnel testing for commercial and business aircraft

商用和公务机的空气动力学设计需要仔细结合计算分析和实验测试，以确保在有限的风险水平下及时向市场交付产品。风洞等地面测试设施继续提供大量实验数据，用于校准CFD代码，验证气动设计，并生成执行飞行控制系统所需的气动数据库。近年来，市场动态为飞机制造商提供了强烈的动力，以减少设计周期时间，同时保持甚至减少与空气动力学设计相关的风险。对于风洞运营商来说，这是一个具有挑战性的环境，他们不断面临着提高效率和减少空气动力学测试不确定性的同时要求。

The aerodynamic design of commercial and business aircrafts requires a careful mix of computational analysis and experimental testing to ensure a timely market delivery at a limited level of risk. Ground test facilities like wind tunnels continue to provide the bulk of experimental data that are used to calibrate CFD codes, validate the aerodynamic design, and generate the aerodynamic database necessary to implement flight control systems. In recent years, market dynamics have provided a strong incentive for aircraft manufacturers to reduce the design cycle time while simultaneously maintain or even reduce the amount of risk associated with aerodynamic design. This is a challenging environment for wind tunnel operators, who are constantly confronted with simultaneous requests for increased efficiency and reduced uncertainty in aerodynamic testing. The present proposal attempts to tackle this issue by looking at different ways that could be devised to improve the accuracy of Bombardier Aerospace's wind tunnel tests. More specifically, the long term goal of the proposed work is the improvement of testing methodologies at two Canadian production wind tunnels regularly used by Bombardier: the 1.5m Trisonic Blowdown Wind Tunnel and the 2m x 3m Low-Speed Wind Tunnel, both located at the NRC Institute of Aerospace Research in Ottawa.