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.

Errors in the use of mass analyzers in plasma physics

Abstract: Errors of charged-particle analyzer resulting from expansion of plasma beam within and without analyzer

Programmable bridging apparatus to connect multiple networks of different protocols

Abstract: A bridging apparatus ( 10 ) for use in bridging a plurality of external communications networks ( 20 a -20 n ) includes a plurality of network interfaces ( 12 ) and a bridge ( 14 ). The individual interfaces within the plurality of network interfaces ( 12 ) are each capable of converting signals between a signal format used by an associated external communications network and a common signal format supported by the bridge ( 14 ). The bridge ( 14 ) establishes at least one bridge connection between network interfaces according to a predetermined bridging function. The bridge ( 14 ) includes a digital processor having an associated memory for storing one or more bridging programs. The digital processor executes at least one of the bridging programs in order to implement the desired bridging function.

Stochastic crack propagation in fastener holes

Abstract: A simple crack growth rate-based stochastic model for fatigue crack propagation in fastener holes under spectrum loadings is investigated. With available fractographic data in the very small crack size region, i.e., 0.004 to 0.07 inches, the model was demonstrated previously to be very good. Further, laboratory tests were conducted using wide fastener hole specimens to obtain fractographic data covering the small and large crack size regions in both laboratory air and a corrosive environment. The correlations between the stochastic model and the fractographic results in either the corrosive or noncorrosive environment are demonstrated to be very good. The model is shown to be valid for crack growth damage accumulation from the very small crack up to the critical crack size. Such a simple model is ideal for practical applications, such as in durability and damage tolerance analyses. Factors affecting the stochastic crack growth analysis and prediction are also investigated.

Expandable telescoped missile airframe

Abstract: An expandable telescoped airframe for a missile provides a shorter configuration for convenience in handling and a longer configuration to provide added predetermined clearance in front of a shaped charge warhead after launch. The airframe is mechanically locked into its extended configuration upon deployment of its expansion feature by means of a wedge brake collar. Possible deployment means include gas pressure, one or more springs, and a drogue parachute. Tail and other control surfaces spring open after clearing the airframe tube to provide aerodynamic stability.

Communication Units and Methods for Relay-Assisted Uplink Communication

Abstract: A relay device for supporting uplink communication between a terminal device and a base station is described. The relay device comprises at least one receiver arranged to receive a downlink message from the base station; a control processor, operably coupled to the at least one receiver and arranged to determine from the downlink message information identifying an uplink control resource to be used by the terminal device; and a transmitter, operably coupled to the control processor and arranged to relay received periodic uplink control channel messages on the identified uplink control resource from the terminal device to the base station.