An experimental apparatus, which simulates a subsonic multiple‐jet aerodynamic window, is fabricated and aerodynamic characteristics of the single‐curved jet and the multiple‐curved jets are studied. A nondimensional quantity ξ is introduced in order to represent the magnitude of the power consumption. Then, the effect of the window configuration on ξ is evaluated experimentally. Within the range of the present experiments, it is shown that the power consumption of the multiple‐jet aerodynamic window can be made less than that of the single‐jet scheme, if at least three stages of jets are utilized. It is also shown that the design of the window configuration is important to reduce the power consumption and to obtain the stable operation of multiple‐curved jets.
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