ventral fin


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

ventral fin

ventral fin
A vertical, stabilizing fin on the lower rear portion of a fuselage that helps increase directional stability, especially at higher Mach numbers, by increasing the area behind the vertical axis.
References in periodicals archive ?
Ventral fins are without any markings, completely transparent yellow with some pale white at the basis and white at the tip.
Structural Assemblies: Cyclone Aviation Products Ltd, a wholly owned subsidiary of Elbit Systems, manufactures the following structural assemblies using advanced composite materials technology: horizontal stabilizer, rudder, ventral fin and access doors.