Design and Analysis of Aerospace Lifting Surfaces with Honey Comb

Sandwich panels are used to design and construction of lightweight transportation systems such as satellite, missiles structural weight saving is the major consideration and sandwich panels are frequently used instead of increasing material thickness. This type of construction consists of thin two facing layers separated by a core material. Potential materials for sandwich facings are aluminum alloys, high tensile steels, titanium and composites depending on the specific mission requirement. Several types of core shapes and core material have been applied to the construction of sandwich structures. Among them, the honeycomb core that consists of very thin foils in the form of hexagonal cells perpendicular to the facings is the most popular. The conventional single skin structure, which is of single plates reinforced with main frames and stiffeners normally necessitates a fair amount of welding, and has a considerable length of weld seams. Further, the lighter but thinner plates employed tend to increase weld distortions that may in some cases require more fabrication work to rectify. More weld seams also mean a greater number of fatigue initiation locations as well. Honeycomb sandwich construction, with a honeycomb core is sandwiched by two outer facing skins is better able to cope with such difficulties. Disclosed is a light weight honey comb structure that comprises a top panel and bottom panel and large celled honey comb layer disposed between the top and bottom panels. The honey comb panel structure according to the present invention can be used in such applications as a sound absorbing pay load shroud for launching vehicles, flooring and walls in aerospace applications, aircraft wings and in structures that will be exposed to high heat.