Keywords: Aircraft venturi 1.JPG A pair of venturi tubes mounted on the side of a light aircraft's fuselage Venturis were used on small aircraft as a means of providing suction for air-driven gyroscopic instruments such as the artificial horizon and directional gyro Modern light aircraft are fitted with engine-driven pumps to provide suction These tubes are photographed installed on a Piper Colt own 2013-04-03 YSSYguy wikipedia en cc-zero User YSSYguy Original upload log en wikipedia ftcg page en wikipedia Aircraft_venturi_1 JPG wikitable - 03 28 14 February 2014 3 888 × 2 592 2 092 049 bytes YSSYguy w en <nowiki>A pair of venturi tubes mounted on the side of a light aircraft's fuselage Venturis were used on small aircraft as a means of providing suction for air-driven gyroscopic instruments such as the artificial horizon and directional gyro Modern light air </nowiki> Aircraft Venturi air pumps |