摘要:
An apparatus and method for forming a composite workpiece are provided. An electromagnetic field generator induces a current in a susceptor, thereby heating the workpiece in a die cavity. An elastomeric bladder in the cavity is inflated and urges the workpiece against a contour surface corresponding to a desired configuration of the workpiece. Coolant fluid can also be circulated through the die cavity to cool the workpiece. Thus, the workpiece can be heated, formed, and cooled quickly and without substantial heating of other components, thereby reducing the time and energy relative to conventional forming methods.
摘要:
An apparatus and method for forming a composite workpiece are provided. An electromagnetic field generator induces a current in a susceptor, thereby heating the workpiece in a die cavity. An elastomeric bladder in the cavity is inflated and urges the workpiece against a contour surface corresponding to a desired configuration of the workpiece. Coolant fluid can also be circulated through the die cavity to cool the workpiece. Thus, the workpiece can be heated, formed, and cooled quickly and without substantial heating of other components, thereby reducing the time and energy relative to conventional forming methods.
摘要:
A antenna aperture having electromagnetic radiating elements embedded in structural wall portions of a honeycomb-like core. Independent wall sections each having a plurality electromagnetic radiating elements are formed into the honeycomb-like core. Feed portions of each radiating element form teeth that are copper plated before being assembled onto a back skin panel. Each of the teeth are then generally machined flush with a surface of the back skin to present electrical contact pads which enable electrical coupling to each of the radiating elements by an external antenna electronics board.
摘要:
An antenna aperture and method of assembling same. The antenna aperture forms a honeycomb-like core structure with dipole radiating elements integrally formed into structural wall portions of the honeycomb-like core. The antenna aperture has sufficient structural strength to form a structural portion of a mobile platform, while still being sufficiently light in weight for weight-critical applications such as with airborne mobile platforms.
摘要:
A conformal, load bearing, phased array antenna system having a plurality of adjacently positioned antenna aperture sections that collectively form a single, enlarged antenna aperture. The aperture sections are each formed by intersecting wall panels that form a honeycomb-like core having a plurality of electromagnetic radiating elements embedded in the wall panels that form the core. The aperture wall panels are assembled onto a single, multi-faceted back skin, bonded thereto, and then machined to produce a desired surface contour. A radome formed by a single piece of composite material is then bonded to the contoured surface. Antenna electronics printed wiring boards are also bonded to an opposite side of the back skin. The contour is selected to match a mold line of a surface into which the antenna system is installed. The antenna is able to form an integral, load bearing portion of the structure into which it is installed.
摘要:
A phased array antenna aperture able to form a structural, load bearing portion of another structure, for example, a portion of a mobile platform. The antenna aperture is formed with a plurality of radiating elements sandwiched between prepreg fabric plies to form independent wall sections having a plurality of electromagnetic radiating elements embedded therein. The wall sections are secured in a honeycomb arrangement to form an array of cells of radiating elements. The manufacturing methods described herein enable arrays of widely varying sizes and shapes to be created and used as structural, load bearing portions of a wing, fuselage, door panel or other area of a mobile platform. The antenna aperture is lightweight because it does not include the weight of parasitic support components typically required in the construction of phased array antenna apertures.