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  2. General Dynamics Electric Boat - Wikipedia

    en.wikipedia.org/wiki/General_Dynamics_Electric_Boat

    General Dynamics Electric Boat [2] ( GDEB) is a subsidiary of General Dynamics Corporation. It has been the primary builder of submarines for the United States Navy for more than 100 years. The company's main facilities are a shipyard in Groton, Connecticut, a hull-fabrication and outfitting facility in Quonset Point, Rhode Island, and a design ...

  3. Generalized coordinates - Wikipedia

    en.wikipedia.org/wiki/Generalized_coordinates

    This is a suitable choice of generalized coordinate for the system. Only one coordinate is needed instead of two, because the position of the bead can be parameterized by one number, s, and the constraint equation connects the two coordinates x and y; either one is determined from the other. The constraint force is the reaction force the wire ...

  4. Holonomic constraints - Wikipedia

    en.wikipedia.org/wiki/Holonomic_constraints

    In classical mechanics, holonomic constraints are relations between the position variables (and possibly time) [1] that can be expressed in the following form: where are n generalized coordinates that describe the system (in unconstrained configuration space ). For example, the motion of a particle constrained to lie on the surface of a sphere ...

  5. American submarine NR-1 - Wikipedia

    en.wikipedia.org/wiki/American_submarine_NR-1

    American submarine. NR-1. 4.8 m (15 ft 9 in) at stern stabilizers. Deep Submergence Vessel NR-1 was a unique United States Navy (USN) nuclear-powered ocean engineering and research submarine, built by the Electric Boat Division of General Dynamics at Groton, Connecticut.

  6. Astute-class submarine - Wikipedia

    en.wikipedia.org/wiki/Astute-class_submarine

    BAE claims that the 2076 is the world's best sonar system. All of the Astute-class submarines will be fitted with the advanced Common Combat System. Propulsion and general specifications. The boats of the Astute class are powered by a Rolls-Royce PWR2 (Core H) (a pressurised water reactor) and fitted with a pump-jet propulsor.

  7. Right-hand rule - Wikipedia

    en.wikipedia.org/wiki/Right-hand_rule

    Right-hand rule. In mathematics and physics, the right-hand rule is a convention and a mnemonic, utilized to define the orientation of axes in three-dimensional space and to determine the direction of the cross product of two vectors, as well as to establish the direction of the force on a current-carrying conductor in a magnetic field.

  8. General Dynamics - Wikipedia

    en.wikipedia.org/wiki/General_Dynamics

    General Dynamics. General Dynamics Corporation ( GD) is an American publicly traded aerospace and defense corporation headquartered in Reston, Virginia. As of 2020, it was the fifth-largest defense contractor in the world by arms sales, and fifth largest in the United States by total sales. [2]

  9. USS Nautilus (SSN-571) - Wikipedia

    en.wikipedia.org/wiki/USS_Nautilus_(SSN-571)

    Designated NHL. 20 May 1982 [6] USS Nautilus (SSN-571) was the world's first operational nuclear-powered submarine and the first submarine to complete a submerged transit of the North Pole on 3 August 1958. Her initial commanding officer was Eugene "Dennis" Wilkinson, a widely respected naval officer who set the stage for many of the protocols ...