Ventral Fin A small vertical surface on the bottom of the aft fuselage. Usually a long, slim triangle that is narrow at the front, and widens toward the rear. It usually ends at the rudder hinge line.
VENTRAL FIN - A fin/rudder extension on the bottom of a fuselage. Opposite of DORSAL FIN.
VENTRAL - Relating to the under-surface of an aircraft's fuselage.
VFR - Visual Flight Rules; i.e. flight under conditions of good external visibility, without dependence on aircraft instruments.
There were three crew members-pilot, turret gunner, and radioman/bombardier/ventral gunner. A .50-caliber machine gun was mounted in each wing, and one more .
Ventral airstairs incorporated into the Boeing 727 and McDonnell Douglas DC-9 designs were particularly efficient from a ground handling perspective, for as passengers were deplaning aircraft, ...
The vertical stabilizer was reconfigured and enlarged slightly, and a ventral fin was added beneath the tail. The trim tab on the right elevator also received a gurney device: a small, wedge-shaped, metal tab attached to the trailing edge.
Additional fin area may be added to aircraft fitted with floats (seaplanes), usually beneath the horizontal stabilizer (ventral fin), and sometimes at the stabilizer extremities.
area required for the fin has some dependency on the net sum of all the restoring moments associated with the aircraft fuselage and undercarriage side surfaces fore (negative moments) and aft (positive moments) of the cg. Some aircraft have ventral ...
62 mm machine guns, one mounted on the nose and the other in the tail position, plus two more machine guns of the same caliber in the dorsal and ventral positions.
 See also: Aircraft, Flight, Plane, Power, Fuselage
  
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