Showing posts with label MILITARY. Show all posts
Showing posts with label MILITARY. Show all posts

Tuesday, February 12, 2008

WARSHIP - DESTROYER

In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet or battle group and defend them against smaller, short-range but powerful attackers (originally torpedo boats, later submarines and aircraft). Before World War II destroyers were light vessels without the endurance for unattended ocean operations; typically a number of destroyers and a single destroyer tender operated together. During and after the war, larger and more powerful destroyers capable of independent operation were built, particularly as cruisers ceased to be used in the 1950s and 60s.

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At the dawn of the 21st century, destroyers are the heaviest surface combatant ships in general use, with only four nations (the United States, Russia, France and Peru) operating cruisers and none operating battleships. Modern destroyers, also known as guided missile destroyers, are equivalent in tonnage but drastically superior in firepower to cruisers of the World War II era, capable of carrying nuclear missiles that are able to destroy cities.

Sunday, February 3, 2008

APACHE ATTACK HELICOPTER

The AH-64 Apache is the United States Army's principal attack helicopter, and is the successor to the AH-1 Cobra. The AH-64 is powered by two General Electric T700 turboshaft engines. The crew sits in tandem, with the pilot sitting behind and above the copilot-gunner in an armored crew compartment. The AH-64 is armed with a 30 mm M230 chain gun and carries a mixture of AGM-114 Hellfire and Hydra 70 rockets on four hard points mounted on its stub-wing pylons.

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TDesigned by Hughes Helicopters in response to the Army's Advanced Attack Helicopter Program, it was built to endure front-line environments and to operate during the day or night and in adverse weather using avionics and electronics, such as the Target Acquisition and Designation System, Pilot Night Vision System (TADS/PNVS), passive infrared countermeasures, Global Positioning System (GPS), and the Integrated Helmet And Display Sight System (IHADSS). McDonnell Douglas purchased Hughes Helicopters and continued the development of the AH-64 resulting in the AH-64D Apache Longbow which is currently produced by Boeing Integrated Defense Systems.

Saturday, February 2, 2008

F 14 - TOMCAT

The Grumman F-14 Tomcat is a supersonic, twin-engine, two-seat, variable geometry wing aircraft. The F-14 was the United States Navy's primary maritime air superiority fighter, fleet defense interceptor and tactical reconnaissance platform from 1974 to 2006. It later performed precision strike missions once it was integrated with LANTIRN. It was developed after the collapse of the F-111B project, and was the first of the American teen-series fighters which were designed incorporating the experience of air combat in Vietnam against MiGs.

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The F-14 Tomcat entered service in 1972 with the U.S. Navy, replacing the F-4 Phantom II. It was later exported to the Imperial Iranian Air Force in 1976, during a time when the US still had good relations with Iran. It was retired from the U.S. Navy fleet on 22 September 2006, having been replaced by the F/A-18E/F Super Hornet. As of 2007, it remains in service only with the Islamic Republic of Iran Air Force.

Friday, February 1, 2008

AIRCRAFT CARRIER

An aircraft carrier is a warship designed to deploy and in most cases recover aircraft, acting as a sea-going airbase. Aircraft carriers thus allow a naval force to project air power great distances without having to depend on local bases for staging aircraft operations. They have evolved from wooden vessels used to deploy a balloon into nuclear powered warships that carry dozens of fixed and rotary wing aircraft.

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Aircraft carriers played a significant role in World War II. With seven aircraft carriers afloat, the British Royal Navy had a considerable numerical advantage at the start of the war as neither the Germans nor the Italians had carriers of their own. However, the vulnerability of carriers compared to traditional battleships when forced into a gun-range encounter was quickly illustrated by the sinking of HMS Glorious by German battlecruisers during the Norwegian campaign in 1940.

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