V-tail

1950 V-tailed B35 still operated by the National Test Pilot School at the Mojave Air and Space Port
Rear view of the Cirrus Vision SF50's V-tail and engine outlet
The V-tail of a Belgian Air Force Fouga CM.170 Magister
An Ultraflight Lazair showing its inverted V-tail covered with translucent Tedlar

The V-tail or vee-tail (sometimes called a butterfly tail or Rudlicki's V-tail) of an aircraft is an unconventional arrangement of the tail control surfaces that replaces the traditional vertical and horizontal surfaces with two surfaces set in a V-shaped configuration. It is not widely used in aircraft design. The aft edge of each twin surface is a hinged control surface called a ruddervator, which combines the functions of both a rudder and elevator.