This Presentation is dedicated to…

1. This Presentation is dedicated to… 107/MAPLD2004

2. LAUNCHER HOMING UAV By VINOO KAARTHICK.M Final Year Mepco Schlenk Engineering College Anna University India 107/MAPLD2004

3. We are about to see the following • Brief discussion about stinger missiles • Existing countermeasures for stinger attacks • Proposed countermeasure : Launcher Homing Mechanism (LHM) • Principle of LHM • Components of LHM • Layout of Launcher Homing UAV • Working of LHU • Advantages • Conclusion 107/MAPLD2004

4. Modern Defense Systems… • Guns, Missiles, Bombs – end technology in combat • Missiles play a major role • They don’t just sail but find their own target • They have a built in seeking system making them smarter • Electronic intelligence • Missile defense systems- essential aspect in future 107/MAPLD2004

5. Missile Classification… • Surface to Surface (SSM) Tactical & Strategic • Surface to Air (SAM) Land & Sea launched • Air to Air (AAM) • Air to Surface (ASM) Tactical & Strategic • Glide Bomb • Torpedo 107/MAPLD2004

6. Surface to Air Missile… • End system of a surveillance and tracking radar. • Fired from a ground launcher • Onboard guidance control • Feedback navigation control provided by Engagement control station • Transceiver - communication link 107/MAPLD2004

7. Stinger Missile… • Light weight and portable • Shoulder launched weapon • Passive infra-red seeker • Fire and forget weapon 107/MAPLD2004

8. Low Altitude Air Defense (LAAD) Dual Thrust Solid Fuel Rocket Motor Length - about 5 ft (1.5m) Width - 5.5” (13.96cm) Weight - 12.5 pounds (5.68 kg) Range - 1 to 8 km Sight ring - 10 mils Impact Fuse, self destructive Ceiling - 10,000 ft (3.046 km) Speed - Supersonic in flight Stinger Specifications… 107/MAPLD2004

9. Stinger Layout… 107/MAPLD2004

10. Propulsion System… • Launch motor • Dual thrust flight motor • Flight motor ignites after coasting a safe distance from launcher • Sustained flight phase till fuel is consumed • Free flight period or coast period till intercept or self destruction 107/MAPLD2004

11. Guidance section… • Seeker assembly • Guidance assembly • Control assembly • Missile battery • Four control surfaces (wings) • Tail assembly for stabilization • Stinger alternate system(LASER beam) 107/MAPLD2004

12. Target Engaging… • Integral IFF • Re-programmable Microprocessor(RMP) controlled POST homing head • Dual waveband seeker • RMP software to engage low signature targets • A ring-laser gyro roll sensor • Lithium battery 107/MAPLD2004

13. Dual Wave Band Seeker… • Both IR and UV • Rosette imaging • Focal plane array design • Developed algorithms to engage small targets • Less background and clutter effects 107/MAPLD2004

14. Existing Countermeasures… • Infra-red countermeasure • Chaff and Decoy - flares • Anti-missiles 107/MAPLD2004

15. Launcher Homing Mechanism (LHM) Proposed Countermeasure 107/MAPLD2004

16. Principle… • Missile misguidance : Replacing the thermal image at stinger missile’s RMP • Rerouting the missile along with the UAV to the ground by using reversal algorithm 107/MAPLD2004

17. Components of LHM… • In Parent Aircraft • Airborne Radar • ECM Suite • Flight Path Re-Construction Unit 107/MAPLD2004

18. Components of LHM… • In the Launcher Homing UAV • High IR Emitter unit • Re-routing unit • Rear missile locking unit • Initial thrust unit • Super sonic Booster unit • Cluster bombs 107/MAPLD2004

19. Air Borne Radars… • Nose - Fire control or Tail Cone Radar • Phase controlled antenna • Slotted wave guide antenna • Polarized ferrite phase shifters • Target handling capability – 30 • Light weight 107/MAPLD2004

20. Radar Specifications… • Reduced beam switching time by a factor of 10 • Detection at 100 km and lock on at 80 km • Peak power – 4 kW • Average power – 0.3 kW • Weight – 75 kg 107/MAPLD2004

21. ECM Suite… • Coordinated with the on board radar • Systems use beams of light, produced by flash lamps or multi-line LASERS • Multi-wavelength light is guided towards the seeker • Reticle-scan of the seeker is exploited • False data deceives or jams or breaks missile lock 107/MAPLD2004

22. Flight Path Re-construction Unit… • Tracked target path history is reversed • Approximate location of the launcher is given as input to the UAV Re-router • Tracked data is given as an azimuth and elevation 107/MAPLD2004

23. Layout of LHU… 107/MAPLD2004

24. High IR Emitter unit… • Present at the rear end of the unmanned air vehicle • Multiple emitters to approximately simulate an aircraft engine’s IR signature • Rotating Gimbals provide a wider coverage • High intensity along with multiple wavelengths offer multifunctionality 107/MAPLD2004

25. Re-routing unit… • Responsible for the guidance system of the UAV • Has the data about the location where the stinger was first sighted by the RADAR • Re-routing program is executed on receiving a signal from rear locking unit • On reaching the location microprocessor activates the cluster bomb fuse 107/MAPLD2004

26. Rear missile locking unit… • Doppler effect is used to calculate distance between aircraft and stinger • Placed at the rear end of the UAV • Lock is established • Relative distance is maintained • Stinger always remains in the track mode 107/MAPLD2004

27. Propulsion unit… • Initial Thrust unit • Solid propellant motor • Cross section of propellant : concentric for constant phase • Super sonic booster unit • Uses double base solid propellant – high specific impulse • Cross section of propellant : five pointed star profile for boosting • Nozzle diameter could be varied – for velocity matching 107/MAPLD2004

28. Cluster bombs… • Blown out after receiving the signal from the control unit • Explosive bomblets – around 670 carried in a canister • Maximum damage of 200,000 steel fragments spread across 20 football fields • Potential threat for a long time 107/MAPLD2004

29. Overall working… IFF identifies the aircraft Replacing thermal image Missile accelerates to UAV Incase of data insufficient cluster bomb get actuated No change Launcher feeds aircraft’s Ir signature to the stinger’s RMP No Dropping UAV and escape manoeuvrings of aircraft Rear locking unit detects the relative distance (RD) RD =fixed default distance UAV along with missile traces the reversed path Missile and UAV home to the enemy territory Yes Supersonic booster unit ignited Transferring the reversal algorithm to UAV Missile launched from ground Data loss at the guidance unit of stinger Relative velocity matching Rerouting unit get actuated Missile guided to the aircraft at Mach speed Aircraft initiates ECM 107/MAPLD2004

30. Advantages… • Collision avoidance is assured • Rerouting mechanism • Reasonably inexpensive as compared to the entire destruction of the aircraft • LHU also plays a role of an effective weapon • Reverse Engineering is not possible 107/MAPLD2004

31. Conclusion… • We have discussed about new method of Missile Defense system in combat • This vehicle will be a solution in the form of an inexpensive and efficient countermeasure for the enemy missile attacks 107/MAPLD2004

32. Thank you 107/MAPLD2004

33. References… • Introduction to Radar Systems – Merrill I. Skolnik • Electronic Intelligence : The Interception of Radar Signals – Richard G.Wiley • Electronic War fares • Defense websites 107/MAPLD2004