FEATURES OF THE FLOW AROUND A MANEUVERABLE AIRPLANE OF THE TAIL-FIRST CONFIGURATION WITH TWIN VERTICAL TAILS AT HIGH ANGLES OF ATTACK

Abstract

The flow around the tail-first aerodynamic layout of a maneuverable airplane with a twin vertical tail is investigated on models in wind tunnels using weight, strain gauge, and physical experiments. At high angles of attack, the interactions between the vortex structures and the twin vertical tail, as well as the associated changes in the lift coefficient and rolling moment are revealed. Various positions of the tail fins are considered and a compromise design solution for the placement of the tail fins on a tail-first aircraft model is presented.