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.
<a href="https://en.wikipedia.org/wiki/User:YSSYguy" class="extiw" title="wikipedia:User:YSSYguy">YSSYguy</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
2013-04-03
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