Abstract: Truss core panels comprising face sheets and a core, formed of adjoining tubes having an equilateral triangular cross-sectional shape, are disclosed. The face sheets are formed of either a homogeneous material (e.g., a metal, such as aluminum or titanium); or, a composite material, such as a laminate formed of bonded plies. The plies are woven from suitably strong fibers (e.g., glass or graphite), bonded together by a suitable resin. The tubes are also formed of either a homogeneous material or laminated from suitably strong fibers bonded together by a resin. Depending upon the material used, the tubes can be either formed by pultrusion or by machine winding on mandrels and cured. The tubes may be formed of the same material as the face sheets or different materials. Stiffening ribs and the like are formed by including additional layers of tubes. Further, the tubes may be filled continuously or intermittently, as desired, to accommodate fasteners.

Abstract: A turntable bearing which is particularly well adapted for securing an adjustable airfoil to the fuselage of an aircraft. The disclosed preferred embodiment comprises a ring shaped structure consisting of a lower support ring, an inner and an outer bearing, a tee ring, and an annular bearing plate. A dovetail groove is placed into the top surface of the support ring around its circumference. Within the groove are the inner and outer bearings with the tee ring located between them. Both bearings and the tee ring engage the top surface of the annular bearing plate which is also within the groove.