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RIM-161 Standard
The RIM-161 Standard Missile 3 (SM-3) is a ship-based surface-to-air missile system used by the United States Navy to intercept short- and intermediate-range ballistic missiles as a part of Aegis Ballistic Missile Defense System. Although primarily designed as an anti-ballistic missile, the SM-3 has also been employed in an anti-satellite capacity against a satellite at the lower end of low Earth orbit.Pentagon news briefing of February 14, 2008video : although no name for the satellite is given, the launch date of December 14, 2006 is stated The SM-3 is primarily used and tested by the and also operated by the |
USS Lake Erie (CG-70) SM-3 Start
USS ''Lake Erie'' may refer to the following ships operated by the United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...: * , a former cargo ship for the Navy from 1917 until she was sunk during an accident in 1919. * , a currently-serving . See also * for other ships named after Lake Erie {{DEFAULTSORT:Lake Erie United States Navy ship names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inertial Guidance System
An inertial navigation system (INS) is a navigation device that uses motion sensors (accelerometers), rotation sensors ( gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object without the need for external references. Often the inertial sensors are supplemented by a barometric altimeter and sometimes by magnetic sensors ( magnetometers) and/or speed measuring devices. INSs are used on mobile robots and on vehicles such as ships, aircraft, submarines, guided missiles, and spacecraft. Other terms used to refer to inertial navigation systems or closely related devices include inertial guidance system, inertial instrument, inertial measurement unit (IMU) and many other variations. Older INS systems generally used an inertial platform as their mounting point to the vehicle and the terms are sometimes considered synonymous. Overview Inertial navigation is a self-cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Phased Adaptive Approach
The NATO missile defense system is a missile defense system being constructed by the North Atlantic Treaty Organization (NATO) in several member states and around the Mediterranean Sea. Plans for this system have changed several times since first studied in 2002, including as a response to Russian opposition. Background A missile defense feasibility study was launched after the 2002 Prague Summit. The NATO Consultation, Command and Control Agency (NC3A) and NATO's Conference of National Armaments Directors (CNAD) were also involved in negotiations. The study concluded that missile defense is technically feasible, and it provided a technical basis for ongoing political and military discussions regarding the desirability of a NATO missile defense system. The United States negotiated with Poland and the Czech Republic over the course of several years after on the deployment of interceptor missiles and a radar tracking system in the two countries. Both countries' governments indica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrow 3
The Arrow 3 or ''Hetz 3'' ( he, חֵץ 3, ) is an exoatmospheric hypersonic anti-ballistic missile, jointly funded, developed and produced by Israel and the United States. Undertaken by Israel Aerospace Industries (IAI) and Boeing, it is overseen by the Israeli Ministry of Defense's "''Homa''" ( he, חומה, , "rampart") administration and the U.S. Missile Defense Agency. It provides exo-atmospheric interception of ballistic missiles (during the space-flight portion of their trajectory), including intercontinental ballistic missiles (ICBMs) carrying nuclear, chemical, biological or conventional warheads. With divert motor capability, its kill vehicle can switch directions dramatically, allowing it to pivot to see approaching satellites. The missile's reported flight range is up to . According to the chairman of the Israeli Space Agency, Arrow 3 may serve as an anti-satellite weapon, which would make Israel one of the world's few countries capable of shooting down satellites. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket Engine
A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, producing thrust by ejecting mass rearward, in accordance with Newton's third law. Most rocket engines use the combustion of reactive chemicals to supply the necessary energy, but non-combusting forms such as cold gas thrusters and nuclear thermal rockets also exist. Vehicles propelled by rocket engines are commonly called rockets. Rocket vehicles carry their own oxidiser, unlike most combustion engines, so rocket engines can be used in a vacuum to propel spacecraft and ballistic missiles. Compared to other types of jet engine, rocket engines are the lightest and have the highest thrust, but are the least propellant-efficient (they have the lowest specific impulse). The ideal exhaust is hydrogen, the lightest of all elements, but chemical rockets produce a mix of heavier species, reducing the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual-thrust
In a dual-thrust solid propellant rocket engine, the propellant mass is composed of two different types (densities) of fuel. In the case of a tandem dual-thrust motor, the fuel nearest to the rocket nozzle burns fast, and the fuel further into the motor's body burns slower. This gives the rocket higher thrust initially, accelerating it rapidly to high speed. When all the fast-burning propellant has burnt, the slow-burning propellant delivers a lower level of thrust. The first phase of acceleration is called "boost" and the second phase "sustain". Not all dual-thrust motors are in a tandem arrangement but non-tandem motors function much the same; they just have a different physical layout of fuel. For example, they might burn from the inside to the outside (core burning), rather than from the end in (end burning). The advantage of dual-thrust motors is that, if the fuel were all of the fast-burning kind, the rocket would accelerate up to a higher speed initially but because air res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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