General Dynamics

About: General Dynamics is a company organization based out in Fairfax, Virginia, United States. It is known for research contribution in the topics: Signal & Propellant. The organization has 5722 authors who have published 5819 publications receiving 85768 citations. The organization is also known as: GD & General Dynamics Corporation.

Armored missile launch/shipping container

Abstract: A missile launch system includes a missile launch support structure mounted on a launch platform and including a pair of spaced apart rails having longitudinal slots formed therein, and a cooperating missile launch container having a cylindrical bore for receiving and supporting a missile for launching includes radially extending ribs spaced and oriented to engage and slide along the slots in the rails for supporting the missile launch container for launching of the missile.

Apparatus and method of using fiber-optic light guide for heating enclosed test articles

Abstract: An apparatus and method for providing a specified amount of heat on a test specimen, a portion of a specimen, or multiple specimens, under space-like conditions. This system includes a vacuum chamber in which one or more test specimens are placed. This chamber is evacuated to the necessary vacuum. One or more external sources of high intensity light is used for providing the necessary temperature. One or more reflectors are used for concentrating the high intensity light. A fiber optic light guide is used for receiving concentrated light from the reflector. A port in the vacuum chamber wall is used so that the second end of the light guide can extend into the chamber so that light exiting the second end impinges on a selected area of the test specimen. A positioning apparatus is used for locating the second end of the light guide within the housing adjacent to vary the test specimen area subjected to the light. One or more temperature sensors is used on the test specimens for providing feedback to the temperature controlling system for controlling the amount of light input to the guide to achieve the desired temperature.

Piezo-Optic Resonances in Crystals of the Dihydrogen Phosphate Type

Abstract: Besides the Pockels effect, crystals of the dihydrogen phosphate type (symmetry class 4¯2 m) also exhibit an indirect electro-optic effect or piezo-optic effect This effect is examined both experimentally and theoretically, and expressions for the spatial distribution, amplitude, and frequency response of modulation are derived for the case of a (zxt)0°-cut square plate The frequency response is found to depend upon the light-beam diameter The amplitude of the piezo-optic resonances is found to be nearly independent of frequency

System-in-a-package integration of SAW RF Rx filter stacked on a transceiver chip

Abstract: Demands for mobile phones with smaller form factor and lower cost have driven enhanced integration of electronics components. However, surface acoustic wave (SAW) filters must be fabricated on piezoelectric substrates, and so they are difficult to monolithically integrate on semiconductor chips. This paper reports on a compact wafer-scale packaged SAW filter stacked over a transceiver chip in a quad flat-pack no-lead (QFN) package. An integrated passive device (IPD) provided redistribution and matching between the SAW filter output and the transceiver input. Both extended global system for mobile communications (EGSM) and DCS filters were evaluated. Results demonstrated that conventional packaging techniques could be used to successfully assemble stacked SAW on transceiver modules without damage. SAW compact models based on the coupling of modes model were developed to facilitate system design. Electromagnetic simulations of coupling between SAW filters and inductors integrated on the transceiver suggested that design care is needed to avoid interactions, especially if an IPD is not used as a spacer. With appropriate design, stacked SAW filter on transceiver offers viable module integration.