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Stealth Technology

Stealth Technology. AGNINAYAN S PATIL 1AP07EC004 ECE. AGENDA. Introduction Evolution Characteristics Design process Drawbacks Counter stealth Applications Examples Conclusion. WHAT IS STEALTH TECHNOLOGY ?. Stealth is a technique of making an object invisible.

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Stealth Technology

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  1. Stealth Technology AGNINAYAN S PATIL 1AP07EC004 ECE

  2. AGENDA • Introduction • Evolution • Characteristics • Design process • Drawbacks • Counter stealth • Applications • Examples • Conclusion

  3. WHAT IS STEALTH TECHNOLOGY ? • Stealth is a technique of making an object invisible. • Stealth is an important technology used in military operations. • Stealth is also known as LO(low observable) technology

  4. EVOLUTION • From earliest days deception has been used to gain advantage over the enemy. • Early combat aircraft in WW- I used camouflage to make visual detection difficult. • Advent RADAR in late 1930’s and during WW-II enabled early detection of aircraft . • In 1940’s a unique way with low RADAR cross section strategic bombers developed. • In late 50’s and 60’s came LO planes with compromised performance .

  5. STEALTH CHARACTERISTICS • Airframe shaped for low radar cross section. • Use of radar absorbent materials(RAM). • Minimized infrared signature. • Reduced engine noise. • Reduced visual signature.

  6. “How to make things invisible” DESIGN PROCESS

  7. RADAR CROSS SECTION • RCS of a target is a measure of its size as seen by the radar. • It’s a complex function of the geometric cross section of the target. • RCS is a characteristics of the target not the radar.

  8. RCS of a metal plate • Large RCS but decreases rapidly as the incident angle deviates from the normal

  9. RCS of metal sphere • Small RCS but independent of the incident angle.

  10. Aircraft high RCS area

  11. Designed low observability areas

  12. Comparative RCS

  13. Radar Absorbing Material(RAM) • Nanostructural composite materials absorbing radar waves without reflecting. • RAM reduces the radar cross section making the object appear smaller.

  14. The other techniques are • Active cancellation • Passive cancellation • Plasma stealth

  15. DRAWBACKS • Poor aerodynamic properties. • Requires high end electronic instruments and software's. • High maintenance cost. • Limited amount of ordnance.

  16. Counter Stealth Technology • Obtain stronger RADAR returns employing sophisticated algorithm. • VHF and UHF radars • High frequency over the horizon radars(OTHRs). • BI-static and multi-static radar technology.

  17. APPLICATIONS • Used in wind farms. • Civil aviation and launch vehicles • Military applications.

  18. LOCKHEEDMARTINF-22A • Wing Span 44.5 ft • Length 62 ft 1 in • Wing area 830 sq. ft. • Top Speed Mach 2+ • Range 800 Nm • Altitude 65,000 ft • Air Superiority • Low Observable

  19. B-2 SPIRIT

  20. Adaptive water curtain technology

  21. CONCLUSION “The future is bright, the future is stealth….”

  22. Thank You….

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