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Stealth Technology

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Stealth Technology

  1. 1. STEALTH TECHNOLOGY: <br />Into The Depths<br />By: Heather A Brooks <br />
  2. 2. What Is Stealth Technology?<br />Scientifically known as low observatory<br />Used in Military aviation<br />Reduces detection range of an aircraft<br />http://www.airforce-technology.com/projects/f117/images/nhawk11.jpg<br />Similar to camouflage tactics used by soldiers<br />Partial indivisibility to radar and other detection<br />(“Stealth Technology”, 2008), (Kumar)<br />
  3. 3. How Does Stealth Work? <br />Uses the principle of reflection and absorption as well as redirection. <br />Interferes with communication<br />2 structure surface designs of stealth aircrafts<br />RAS, RAM<br />(Kumar)<br />
  4. 4. RAS: Radar Absorbent Surfaces<br /><ul><li> Deflects Incoming Radar
  5. 5. Reduces detection range
  6. 6. Structures include wings, refueling boom
  7. 7. Works due to angles of structures and how they are placed.
  8. 8. Should have no 90 degree angles
  9. 9. Uses reflection</li></ul>F-117 “Night Hawk”<br />(Kumar)<br />http://www.aerospaceweb.org/aircraft/bomber/f117/f117_03.jpg<br />
  10. 10. RAM: Radar Absorbent Material<br /><ul><li>Absorbs radar signals
  11. 11. Depends on material of the surfaces
  12. 12. Believed to be silicon based organic compound
  13. 13. Gives the aircraft appearance to be the size of a bird</li></ul>B-2 Stealth Bomber<br />http://www.aerospaceweb.org/aircraft/bomber/b2/b2_04.jpg<br />(Sweetman)<br />
  14. 14. IR: Infrared<br /><ul><li> Another Important Factor that influences stealth
  15. 15. Signature given out by aircraft
  16. 16. Reduces visibility in thermal imaging systems
  17. 17. Depends on where engine in placed
  18. 18. Built to have very low IR
  19. 19. Top secret technology </li></ul>(Kumar)<br />
  20. 20. Infrared Aircrafts<br />http://www.aerospaceweb.org/aircraft/bomber/b2/b2_04.jpg<br />http://www.commutefaster.com/F-22.jpg<br />Left: B-2 Right: F-22 Center: JSF<br />(Kumar)<br />http://www.defenseindustrydaily.com/images/AIR_F-35_JSF_On_Tarmac_lg.jpg<br />
  21. 21. Plasma Stealth<br /><ul><li> “Active Stealth”
  22. 22. Inject Stream of Plasma
  23. 23. Covers entire body of aircraft
  24. 24. Absorbs most electromagnetic energy of radar
  25. 25. First developed by Russians
  26. 26. Soviet Russian Space Program</li></ul>http://servv89pn0aj.sn.sourcedns.com/~gbpprorg/mil/radar/B2_Conden_1.jpg<br />(Kumar)<br />
  27. 27. Methods of Avoiding Detection<br />Carry Weapons Internally<br />Turning Radar off<br />Use wingman<br />IFDL: In Flight Data Link<br />(Day, 2001)<br />
  28. 28. Detection Methods<br />Triangulate location with a network of radar systems<br />Method of microwaves similar to cell phone towers<br />(Kumar)<br />
  29. 29. Disadvantages of Stealth Technology<br /><ul><li> Cannot fly fast
  30. 30. Cannot Maneuver
  31. 31. Reduces amount of payload
  32. 32. Cost
  33. 33. Equivalent to its own weight in gold</li></ul>(Kumar)<br />
  34. 34. COST<br />$2 Billion<br />$70 Million<br />$100 Million<br />(Kumar)<br />
  35. 35. Limitations<br /><ul><li> Sensors to locate targets size
  36. 36. Attack on ground targets
  37. 37. Airborne laser radar in poor weather
  38. 38. Vulnerability to visual detection: 10 miles
  39. 39. Special maintenance </li></ul>http://www.groovythemes.com/aviation/stealth_fighter-med.jpg<br />(Sweetman)<br />
  40. 40. History of Stealth Technology<br />Invented by First caveman and leaves<br /> Soldiers and trees<br /> Submarines and waves, coatings<br /> Aircrafts and radar<br />Cont.<br />(Day, 2001)<br />
  41. 41. History of Stealth Technology<br /> Applying Stealth Technology to airplanes in 1940’s<br /> Began designs in 1950’s<br /> 1970’s Mathematician developed Echo 1<br /> 1980’s-1990’s Computer availability of stealth techniques<br />Cont.<br />(Day, 2001)<br />
  42. 42. History of Stealth Technology<br />First Stealth Aircraft F-117<br />Lockheed Martin<br />ATF Contest<br />Fought for multi-billion contract<br />JSF Competition<br />Second World War used tin and aluminum <br />Russia, India, China competitors<br />http://www.wingweb.co.uk/wingweb/img/600-F-117A_Stealth_fighter_37th_Tonopah.jpg<br />F-117 Stealth Fighters<br />(Kumar)<br />
  43. 43. F-117 Stealth Aircraft<br /> 5 were tested between 1981-1982<br />Squadron declared operational in 1983<br /> Unveiled from top secrecy in 1989<br /> Became famous in 1991 Persian Gulf War<br />USA F-117<br />http://www.aviationspectator.com/files/images/F-117A-Nighthawk-stealth-fighter-70.jpg<br /> 1999 shot down by Russian missile <br /> Most famous stealth aircraft<br /> 59 built by Lockheed for Air Force<br />(Day, 2001), (“Stealth Technology”, 2008) <br />
  44. 44. References<br />Day, D.A. (2001). Stealth aircraft. U.S. Centennial of Flight Commission, Retrieved from http://centennialofflight.gov/essay/Evolution_of_Technology/Ste alth_aircraft/Tech3.htm <br />Day, D.A. (2001). Stealth Technology. U.S. Centennial of Flight Commission, Retrieved from http://centennialofflight.gov/essay/Evolution_of_Technology/Ste alth_aircraft/Tech18.htm <br />Kumar, A.G. (n.d.). What is Stealth technology?. Total Air Dominance, Retrieved from http://totalairdominance.50megs.com/articles/stealth.htm <br />Stealth Technology. (2008). The Columbia encyclopedia. Retrieved (2010, April 05) from http://encyclopedia.com/doc/1E1-stealtht.html <br />Sweetman, B. (n.d.). VI- Stealth Aircraft: Eagles Among Sparrows?. Fas.org. Retrieved (2010, April 06) from http://www.fas.org/spp/aircraft/part06.htm<br />

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