A small, low-speed, open return, tilting wind tunnel has been designed. This wind tunnel is intended to simulate the behavior of an unpowered recreational glider that flies down slopes in ground effect at about 1m above the surface. The required tilting angle is 50°. The wind tunnel has to be capable of holding free-flying models with a recommended scaling factor of 14.2 and with Froude number matching.;The designed wind tunnel uses a centrifugal fan to blow air into the test section through a wide angle diffuser, a settling chamber and a contraction. There are six screens and a honeycomb to improve flow uniformity. The test section is closed and rectangular (384mm by 576mm). The maximum obtainable test section velocity is approximately 35 m/s. A moving belt is used to simulate the ground. All the components were designed following methods recommended in literature and the contraction was designed using CFD simulations.
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机译：设计了一个小型的低速开放式回风倾斜风洞。该风洞旨在模拟无动力休闲滑翔机的行为，该滑翔机在地面上方约1m处的地面效应中沿着斜坡向下飞。所需的倾斜角度为50°。风洞必须能够容纳自由飞行模型，建议比例系数为14.2，并且具有Froude数匹配;设计的风洞使用离心风扇通过广角扩散器将空气吹入测试区域，从而达到稳定室和收缩。有六个筛网和一个蜂窝，以改善流动均匀性。测试部分是封闭的并且是矩形的（384mm x 576mm）。可获得的最大测试段速度约为35 m / s。运动带用于模拟地面。按照文献中推荐的方法设计所有组件，并使用CFD模拟设计收缩。
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