This Presentation is dedicated to…

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This Presentation is dedicated to
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LAUNCHER HOMING UAV

• VINOO KAARTHICK.M
• Final Year
• Mepco Schlenk Engineering College
• Anna University
• India

By
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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

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Modern Defense Systems

• Guns, Missiles, Bombs end technology in combat
• Missiles play a major role
• They dont 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

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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

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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

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Stinger Missile

• Light weight and portable
• Shoulder launched weapon
• Passive infra-red seeker
• Fire and forget weapon

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Stinger Specifications

• 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

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Stinger Layout
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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

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Guidance section

• Seeker assembly
• Guidance assembly
• Control assembly
• Missile battery
• Four control surfaces (wings)
• Tail assembly for stabilization
• Stinger alternate system(LASER beam)

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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

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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

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Existing Countermeasures

• Infra-red countermeasure
• Chaff and Decoy - flares
• Anti-missiles

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Launcher Homing Mechanism (LHM)

• Proposed
• Countermeasure

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Principle

• Missile misguidance Replacing the thermal image
  at stinger missiles RMP
• Rerouting the missile along with the UAV to the
  ground by using reversal algorithm

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Components of LHM

• In Parent Aircraft
• Airborne Radar
• ECM Suite
• Flight Path Re-Construction Unit

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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

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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

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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

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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

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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

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Layout of LHU
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High IR Emitter unit

• Present at the rear end of the unmanned air
  vehicle
• Multiple emitters to approximately simulate an
  aircraft engines IR signature
• Rotating Gimbals provide a wider coverage
• High intensity along with multiple wavelengths
  offer multifunctionality

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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

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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

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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

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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

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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 aircrafts Ir signature to the
stingers 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
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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

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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

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Thank you
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References

• Introduction to Radar Systems Merrill I.
  Skolnik
• Electronic Intelligence The Interception of
  Radar Signals Richard G.Wiley
• Electronic War fares
• Defense websites