A fighter aircraft is a military aircraft designed primarily for air-to-air combat with the other aircraft. That is their main difference from bombers. It’s well known that fighters are small, fast, and maneuverable. That made me think it was probably only recently that these powerful death machines were invented. Well, I was wrong! Fighter jets have a long and interesting history. I confess that most of the technical descriptions were taken from Wikipedia, so don’t judge too harshly.
In the aviation community, jet fighters are classified by generations. Actually there are no official definitions of these generations, and they rather represent the different stages in the development of fighter design approaches, performance capabilities, and technological evolution. The timeframes associated with each generation are inexact and only indicate the general period during which fighter jets’ design philosophies and technology employment had a prevailing influence.
Now let’s get back to the very early history of fighter jets. Since World War II, achieving and maintaining air superiority has been a key component of victory in warfare. Still, the purchase, training, and maintenance of a fighter fleet is not the last priority in defense budgets. By the end of the war, turbojet engines were already beginning to replace piston engines as the means of propulsion, and increasingly sophisticated refinements to armament were already appearing. Early fighters were very small and lightly armed, predominantly all-metal monoplanes with wing-mounted batteries of cannons or machine guns.
Modern jet fighters are predominantly powered by one or two turbofan engines and equipped with a radar as the primary method of target acquisition. Armament consists primarily of air-to-air missiles (from as few as two to as many as eight or twelve), with a cannon as backup armament (typically between 20 and 30 mm in caliber). They can also have air-to-surface missiles and guided or unguided bombs.
Let’s take a look at the different generations of fighter jets and some of their representatives. The number of fighters in every generation is astonishing, and if you’d like to get more info, here comes the full list of fighter jets from Wikipedia: http://en.wikipedia.org/wiki/List_of_fighter_aircraft. I’m not sure that the list is full though, as it doesn’t include my favorite Harrier Jump Jet, a British-designed military jet aircraft capable of vertical / short takeoff and landing via thrust vectoring.
These are some of the very first fighter jets which entered production during the closing years of World War II as described above.
Photo by Ken’s Aviation on Flickr
The development of second-generation fighters was shaped by technological breakthroughs, lessons learned from the aerial battles of the Korean War, and a focus on conducting operations in a nuclear warfare environment. Technological advances in aerodynamics, propulsion and aerospace building materials (primarily aluminum alloys) permitted designers to experiment with aeronautical innovations, such as swept wings, delta wings, and area-ruled fuselages. Widespread use of after-burning turbojet engines allowed these aircraft to break the sound barrier, and gave them the ability to sustain supersonic speeds in level flight — it became a common capability amongst fighters of this generation. Radar-guided (RF) missiles were introduced as well, but early examples proved unreliable.
Photo by Chris McLoughlin on Flickr
Photo by PHLAIRLINE.COM on Flickr
Photo by Ken’s Aviation on Flickr
The third generation witnessed continued maturation of second-generation innovations, but it is most marked by renewed emphases on maneuverability and traditional ground-attack capabilities. Enhancements to improve the aerodynamic performance of third-generation fighters included flight control surfaces such as canards, powered slats, and blown flaps. A number of technologies would be tried for vertical / short takeoff and landing, but thrust vectoring would be successful on the Harrier jump jet.
Photo by Ken’s Aviation on Flickr
Photo by Ken’s Aviation on Flickr
Fourth-generation fighters continued the trend towards multi-role configurations, and were equipped with increasingly-sophisticated avionics and weapon systems.
Photo by by MATEUS_27:24&25 on Flickr
The end of the Cold War in 1991 led many governments to significantly decrease military spending as a “peace dividend.” Air force inventories were cut, and research and development programs intended to produce what was then anticipated to be the “fifth-generation” fighters.
Fifth generation jet fighters took serious hits; many programs were canceled during the first half of the 1990s, and those which survived were “stretched out.” The fifth generation was ushered in by the Lockheed Martin / Boeing F-22 Raptor in late 2005. Currently the cutting edge of fighter design, fifth-generation fighters are characterized as being designed from the start to operate in a network-centric combat environment and to feature extremely low, all-aspect, multi-spectral signatures employing advanced materials and shaping techniques.
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The only enemy the F-22 Raptor has is Obama whose intent is to dismantle the U.S. Military, as Hilliary C. wants.
Having grown up around jets (My father is a Colonel, USAF, RET.) My fondness for anything that flies and flies fast, having a profound respect for the men and women who fly such aircraft goes beyond mere words. If it weren't for the development of future generation of such said jet aircraft with world politics such as they are I am left somewhat befuddled when it comes to our presidents stance on cutting back on the development and staying on the cutting edge, as we are, when it comes to our Air Force. I am sure I am not the only one who feels this way. Question: What is to be done about this ongoing problem?
Does the Harrier use some of it's 90 second water reserve to cool the engines during vertical take off as well as landing? If so does it lessen the landing time?
If I'm not mistaken, turbojet engines are used now more than turbofans? This is strictly because of the inefficiency of fans at high speeds.
Typo? in the Headline - viz. FIGTHER
You failed to mention the most successful fighter in history: The McDonnel Douglas (now Boeing) F-15. Primarily flown by the USAF the jet is also in service with the nations of Israel, Saudi Arabia and Japan. The F-15 has an air-ro-air combat record of more than 100 kills to 0 losses.
The f-15 you Could Just say is undeafeted and sorry, but im not trying to get all smart but there is also an f-15 eagle e-strike but I hope that many people could figure out what you mean.