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= F-22 Raptor =

First assigned to the US air force by Lockheed Martin in 2005, the F-22 Raptor is the first 5th generation fighter aircraft to combine a next generation composite airframe with duel Pratt & Whitney F-119 turbo jet engines. These innovations enable the F-22 Raptor to fly at supersonic cruising speeds and to lift its own weight during takeoffs.


 * General causes of wind resistance for aircrafts:**

· Overall, wind resistance is caused by drag on an aircraft due to interactions with the atmosphere's low and high pressures. Here are some forms of drag you can see on aircrafts. · Long, straight wings will cause the air craft to create small wind vortexes that can cause an aircraft to lose balance or disintegrate. · Short and narrow wings will increase the overall manoeuvring capabilities but will reduce speed as well as high speed manoeuvring. · An aircraft cannot reach supersonic speeds without fully rotational fins. Fins with only routers create small wind vortexes which reduces speed. · Without and angled fuselage, the aircraft creates a lot of drag and is much harder to fly. · The heavier and bulkier the aircraft, the more wind resistance and drag. Modern engines and computer controlled hydraulics help moderate this form of drag.

The F-22 Raptor was built using a variety of light weight materials. Ironically, the overall weight of the aircraft is double that of an avg. modern fighter jet (modern jet fighter: approx. 31,670lb). It consists of 39% Titanium, 24% composite, 16% aluminum and 1% thermo-plastic. These materials all have a 1/4+ steel weight with the exception of titanium. Each are combined to create a high quality aerodynamic design. The weight of the plane is consistent with the propulsion needed and has benefits regarding wind penetration.
 * Outer surface components**

Located near the cockpit, the air Inlets are used to redirect on-coming wind around the engine which in terns gives the aircraft more speed and wind resistance. Extra Inlets are located above these inlets which will give the Pilot more manoeuvring thrust. Due to its thin swept back wing positions form 48⁰ to 42⁰, it enables the aircraft to perform smoothly at extremely high speeds. It also enables the aircraft to turn approximately 40⁰ faster than a conventional aircraft of its similar design and weight. The F-22 vertical stabilizers also help in reducing wind/air resistance while climbing and manoeuvring swift turns.
 * Air Inlets**
 * Wing design**

There are two sets of fins located at the rear of the F-22. The first are horizontal fins are capable of turning an impressive 60⁰ without placing too much G-force on the pilot. This ultimately enables the aircraft to manoeuvre more swiftly. They also double as a heat shield for the exhaust of the engines. The second set of fins, the vertical fins are angled equal to that of the fuselage to avoid drag and reduce the chance of detection from the enemy. The vertical fins are exactly one half the size of the wings to help stabilize the aircraft at high speeds.
 * Fins**

The structural loads of the F-22 are mostly absorbed by 5 titanium bulkheads. These Bulkheads are not only in charge of maintaining the structural complexity of the aircraft but are also necessary in the overall aerodynamics of the aircraft. Each of their locations are strategically placed to balance the overall weight of the aircraft allowing it to fly smoother.
 * Fusillade**

The F-22 consist of duel Pratt and Whitney F119-100 turbofans which produce 35,000lbf of thrust each. The engines allow the aircraft to fly at cruise speeds over supersonic. The F-22's top speed exceeds 1600mph (The absolute top speed is classified).
 * Engines**

Takeoff Speed`s: (groung to air)
 * Statistics**
 * 0s - 0km/h
 * 3s - 47km/h
 * 6s - 89km/h
 * 9s - 156km/h
 * 12s - 243km/h

constant acceleration form 200km/h:(airbourne)
 * 0s - 200km/h
 * 6s - 420km/h
 * 12s - 658 km/h
 * 18s - 999km/h
 * 24s - 1398km/h

Work Cited
 * "F22 Raptor" __Wikipedia__,feb 18, 09 Feb 18,09 
 * "F22 Raptor" F22fighter, September 08, Feb 18, 08 