To provide a blowout nozzle capable of forming a natural wind in a wind tunnel, without generating noise.
Respective openings 9a and 10a of respective spaces 9 and 10 are closed/opened alternately, by driving respective dampers 14 and 15, internal pressures Pa and Pb in the spaces 9 and 10 are varied at predetermined intervals from an atmospheric pressure P0 to a pressure P1 of an air flow in the vicinity of a blowout port 3, which flows down in a flow path 11; and the direction of the wind, blown out from the port 3, is swung laterally from the nozzle center line C at predetermined intervals. Thus, an air flow, approximating the natural wind, is formed inside the wind tunnel. In addition, a silencing member 16 is provided in the respective spaces 9 and 10, thereby the drive noise of the dampers 14 and 15 is reduced.
COPYRIGHT: (C)2007,JPO&INPIT
Miyazaki Yoshio
Kaoru Onozuka
Akio Tagami
High Masahiro
Toshio Nakamura
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