วันเสาร์ที่ 16 มีนาคม พ.ศ. 2556

The History of Patches in the US Military

It may seem like military patches have been a part of US military dress for as long as the armed forces have worn uniforms, but the patch is actually a pretty recent addition to the military uniform. The military patch was officially introduced during the First World War after it was authorized for limited use by General John J. Pershing and gained popularity during the Second World War.
These patches have since then decorated uniforms around the world; they have been proudly worn by armed forces personnel as well as gained a following in the civilian community as a collector's item.
How are they used?
Patches are used to identify and designate the rank of individuals serving in the armed forces. Each corps, division and brigade has their own, created and assigned to them to be worn on their uniforms, either on the upper left shoulder or on their helmet. The military patch is usually embroidered and attached to the uniform by virtue of sewing or using Velcro.

Their place in battle
Before the First World War, the US military had not yet created or authorized the use of patches in military uniforms. It was during the US Civil War that some Union soldiers began carrying corps, division and brigade identification on their caps and rank stripes on their sleeves. During the war against the Indian nations, the 1898 Spanish-American War and the campaign against rebel leader Pancho Villa and his forces, US soldiers did not wear patches issued by the government.
Becoming official
It was in May 1918 that the Army's 81st Division Wildcats were granted permission to use their first patch. The first official patches were used as a way to boost morale and to create a sense of brotherhood and camaraderie. General "Black Jack" Pershing ordered all divisions to adopt their own patches and this movement then spread to include corps and brigades who also wanted their own insignia to set themselves apart.
The most recognized military patch: The Big Red
Most military patches have gone through many designs and revisions over the years. The 1st Infantry Division holds the distinction of having the longest surviving patch. Informally known as the Big Red One, the division's military patch design consisted of a large red number "1" sewn onto a pentagonal green field; it was created and issued to the 1st Infantry Division on October 1918. It has gained a reputation as being one of the most identifiable military patches ever created.
World War II
In the interim between world wars, the popularity of patches spread. During World War II, nearly all corps, divisions and brigades possessed their own military patches to designate their affiliation and rank.
Their meaning
Each military patch was unique for every division with variations depending on the symbolism that they chose to incorporate into the designs. Today, the patches chosen by NASA, the Pentagon and other defense agencies have come under fire from conspiracy theorists who claim that the symbolism is rife with imaging referencing secret societies and dark occult references.
A patch's design falls under the area of responsibility covered by the Army Adjutant General's Office's Institute of Heraldry. This was an office originally performed by the Army Quartermaster Corps from 1924-62 before being transferred over to the Adjutant General's Office.


Article Source: http://EzineArticles.com/7483604

วันอังคารที่ 5 มีนาคม พ.ศ. 2556

Mig 29 Fulcrum - Soviet Russian Fighter Aircraft

MiG-29 is a 4 TH generation fighter jet aircraft that was designed by the Soviet Union to carryout air supply due to the air superiority it has. It was developed in the 1970s and started operating in 1983. The MiG-29 Fulcrum also known as Tochka Opori in Russian was built with intentions of becoming the single-seat supersonic. It can withstand all-weather, carryout air superiority and it may be the last fighter produced from the Mikoyan Design Bureau.
The main reason for the MiG-29 is to dismantle the air targets from distance of 60 to 200 kilometers along all altitudes, profiles, under any weather, and conditions. It has advanced versions capable of taking the air-to-ground operations. This makes it possible to optimized attacks on static and motion targets when the motions are guided.

There are developments that have taken place in MiG-29 in order to meet the target of a Light Frontline Fighter Project. This included the new operational requirement to replace MiG-21 and MiG-23 to improve the air defense air forces. It led to the production of lightweight fighter to increase the operations under air superiority.
The very first operational unit took place in August 1983. Since then there have been more multi-role upgrades that have taken place through the MiG-29M prototypes. One of the advancements has been in the two under slung engines that have variable inlets. It had a design that could sustain 9 G's, multimode Pulse-Doppler radar, fire-control and electronic warfare systems.
MiG-29 has turbojet engines, it is so powerful, has mass ratio, and great aerodynamic form for improved visibility from the cockpit. The jet cam perform moves and strategies or aerobatics such as flying Inverted, Hammer Head, Roll, Loop, and low Pass among others. You can have aerobatic package experience with Mig 29 from the various aviation companies to get an experience of a lifetime. It has full cockpit's displays and instrumentation that act as guide when flying the jet.
MiG-29 operates by moving up to a maximum altitude, then the fighter jet descends to an altitude of 5 and 6 km. When you get to this altitude then the pilot begins to display his aerobatics. The aerobatics are performed within a wide area in the sky to allow for adequate performance. This can be done as form of air show. During this time you should communicate with pilot in case there may be need for modification of your programs. The flexibility of the jet enables you to adjust your program based on the way you are feeling.
Specifications:
* Maximum speed: Mach 1.225 or 1500km/h, at altitude up to Mach 2.3 
* Range: 3000km with external fuel, with internal 1430km 
* Ferry range: 1,800 nmi (2,070 mi, 3,330 km) 
* Service ceiling: 50,000+ ft (15,000+ m)
General characteristics:
* Crew: 1 
* Length: 17.32m (56ft 10in) 
* Wingspan: 44 ft 8½ in (13.62 m) 
* Height: 15 ft 6in (4.73 m) 
* Wing area: 409 ft^2 (38 m^2) 
* Max takeoff weight: 43,430 lb (19,700 kg) 
* Powerplant: * Uses Two 49,4 kN dry and 81.4kN with afterburn RD-33 turbofans


Article Source: http://EzineArticles.com/5041037
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