EXHAUST AIR CONTROL APPARATUS IN JET ENGINE TESTING ROOM

摘要

This invention is related to the exhaust air control apparatus is a jet engine testing room(1). The enlargement part(2) of a Fallopian tube type is formed at the vertical hem of the muffler(1). The upper side of the enlargement part(2) has a number of air ventilation hole(3), has fixed the panel(4) in the same radius with the muffler(1). Opening and shutting of the air ventilation hole(3) is regulated by the handle(7).