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STATOR AND SUPPORT ARM AERODYNAMIC PERFORMANCE FOR ENGINE COOLING FANS

STATOR AND SUPPORT ARM AERODYNAMIC PERFORMANCE FOR ENGINE COOLING FANS. Background. Fans are supported by either downstream stators or support arms. The use of stators is intended to improve fan efficiency. However, there are operating conditions where their use may be detrimental. (a).

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STATOR AND SUPPORT ARM AERODYNAMIC PERFORMANCE FOR ENGINE COOLING FANS

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  1. STATOR AND SUPPORT ARM AERODYNAMIC PERFORMANCE FOR ENGINE COOLING FANS Background Fans are supported by either downstream stators or support arms. The use of stators is intended to improve fan efficiency. However, there are operating conditions where their use may be detrimental. (a) Objective (b) To assess experimentally and numerically whether stators are a worthwhile additional benefit, in terms of pressure recovery, or whether it is worth trying to improve support arm shapes. Fan supported by stators (a) and support arms (b)

  2. Research Carried Out Lift and drag forces acting on a typical stator and support arm shapes under realistic operating conditions were determined experimentally. Measured stator and support arm lift Coefficients. Key Findings In the region of highest fan performance probability, the stator has a lift coefficient with a value of 0.1 to 0.6 greater than that for the corresponding support arm values. Measured stator and support arm drag Coefficients.

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