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.

Ship and method of construction

Abstract: 1,163,346. Ship construction. GENERAL DYNAMICS CORP. 21 June, 1967 [27 July, 1966], No. 28739/67. Headings B7A and B7S. A method of ship construction, wherein blocks of ship portions are prefabricated and then assembled on slipways to form a hull envelope 121, comprises the steps of inserting within the envelope either prior to or after launching prefabricated open grid matrices 51 of cross-girders and then inserting within each matrix prefabricated modules or units 124 forming a portion of the internal contents of the ship. In the method described the sections or blocks of ship portions are prefabricated on land and assembled on the slipways. The grid matrices are also made on land and are inserted in the ship on the slipways. The ship is launched and the various modules or units 124, which have been constructed on land, are inserted in the matrices from the dockside. Units made up of compartments and of refrigeration or drying spaces are described, as is a staircase unit extending the full height of the internal portion of the ship.

Nonlinear Dynamics of Longitudinal Oscillations in a Homogeneous Collisionless Plasma with an External Magnetic Field

Abstract: The effect of wave-wave scattering of longitudinal oscillations in a homogeneous collisionless plasma with an external magnetic field is derived. The nonlinear dynamics of the modes existing near multiples of the electron cyclotron frequency are discussed, and it is shown that resonant wave-wave scattering of unstable low harmonic modes is an important mechanism for transferring energy to the higher harmonics.

Rugate filter on diode laser for temperature stabilized emission wavelength

Abstract: The rugate filter comprises a glass film which is deposited on one or both end facets of a diode laser. The glass film has a continuously varying refractive index with thickness, usually in the form of a sine wave or a "windowed" sine wave. Such a film may be deposited by ion-assisted co-deposition techniques in which the concentration of the higher refractive index material is periodically varied according to the period required to produce the desired filter. The glass of which the rugate filter is formed has an average refractive index which does not vary with temperature by more than 10-6 /°C. By reflecting light at the peak wavelength back into the laser, the laser is caused to emit at the desired wavelength. Since the rugate filter selectively reflects light within a narrow band of the desired wavelength, the laser emits light within a narrow peak on the order of 10 Å or less.