Box tail

1.(Aëronautics) In a flying machine, a tail or rudder, usually fixed, resembling a box kite.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The 100 new vehicles will include DAF 7.5 tonne box tail lifts, 18 tonne box and curtain side tail lifts with sleeper cabs, and 44 tonne tractors units with space cabs.
The Barling featured a triwing, a box tail, and six Liberty 12-A engines--four tractors (pullers) and two pushers mounted midwing, directly behind the inboard tractor engines.
Electronic systems typically include a "Down Beat" missile-targeting and navigation radar inside a dielectric nosecone, a 'Box Tail' bomb-targeting radar, and video camera-assisted weapons aiming.