and lower skins further if they do incorporate a wedge depending on the tooting configuration it may have to be machined with the honeycomb in order to ensure a smooth transition between the core and the wedge lastly full depth honeycomb core designs are usually limited to depths of six inches or less due to inspection and weight issues so their use overall is limited to smaller structures one particular advantage of a full depth honeycomb design is that aerodynamicists can achieve the degree of taper desired in order to take advantage of this capability on large panel designs a full depth core trailing edge is often attached to the structure through a trailing edge spar which has the effect of placing a lot of weight at the trailing edge this extra weight can cause flutter problems with the design often these flutter problems cannot be overcome because the only solutions is to add more strength or stiffness to the design which is the equivalent of adding even more material and weight now referring to one or more embodiments of the present invention an un reinforced trailing edge design is one where the aft cell creates the whole trailing edge feature fig5 shows an example of an un reinforced trailing edge in this.