HORIZONTAL TAIL PLANE WITH A MULTI-RIB TORSION BOX

摘要

The present disclosure generally refers to an aircraft horizontal tail plane (HTP) having a multi-rib torsion box formed by first and second lateral torsion boxes symmetrically arranged with respect to a plane of symmetry of the horizontal tail plane. A group of ribs are substantially parallel to the plane of symmetry of the horizontal tail plane, and the stringers are arranged as to define an angle within the range 80°-100° with respect to the plane of symmetry of the horizontal tail plane. Due to this relative arrangement of the ribs and stringers, the stringers are not continuous through ribs, thus the ribs can be manufactured without mouse holes. The HTP of the invention can be manufactured easier and faster than traditional HTP designs.

主权项

1. A horizontal tail plane for an aircraft, the horizontal tail plane comprising:
a first lateral torsion box and a second lateral torsion box joined to each other at a central region thereof and symmetrically arranged with respect to a plane of symmetry of the horizontal tail plane, wherein each of said lateral torsion boxes comprises front and rear spars, and a plurality of ribs having ends respectively joined to the front and rear spars, and an upper cover and a lower cover, each upper cover and lower cover having a plurality of stringers internally fixed thereto, wherein the plurality of ribs are substantially parallel to the plane of symmetry of the horizontal tail plane, wherein said the stringers are arranged as to define an angle within the range of 80°-100° with respect to the plane of symmetry of the horizontal tail plane, wherein the stringers are placed between two consecutive ribs, and wherein each stringer is shorter than the distance between the two consecutive ribs within which that stringer is placed.