Guided Weapons - Guided Study Flashcards
What features are included in the warhead design of the Bolide?
Multiple effects warhead combining blast, frag, and shaped charge
Describe the shape and dispersive effects of the casing of the warhead for the RBS70?
The casing has a convex contour to provide an effective dispersion of fragments both forwards and rearwards
Label the diagram for RBS-70
What does the RBS-70 Safe and Arm Device require to arm and how does it function?
- Located behind the main charge
- Requires firing stimuli to begin arming
- Wing Switch (upon missile exit of tube)
- 7g G Switch (in SAD)
- Internal mechanical safety
- Interrupter slide held out of alignment
- Stepper motor moves slide from safe to arm
What does the slider interrupter do in the SAD in the Bolide?
The slider interrupter keeps the warhead initiator out of line prior to arming
What are the three modes of operation of the proximity fuse?
Off-ground targets
Normal - delay used to engage large targets allowing the missile to get closer (speed dependant)
Small target - UAV or standoff weapons
How many tungsten spheres are in the Warhead of the RBS70?
3000
What 5 parts make up the Missile in Container?
End caps
Launcher tube
Missile lock
Missile launch motor
Bolide missile
On Proximity for the RBS70 what are the ranges?
Min 0.4
Max 6m
Typical 4m
What are the main components of the RBS-70?
Missile in Container
Stand
Sight
Clip on Night Device
What does the explosive charge in the RBS70 warhead consist of?
475g Charge of Octol - HMX/ TNT
What provides storage and transport protection once the MiC is removed from the ISU?
Shock absorbing Cellular plastic End Caps and a Centre Pad
How does the Safe and Arm Device (SAD) prevent initiation?
It keeps the warhead initiator out of line prior to firing until arming conditions are met.
What enhances the thermal blast effect of the warhead?
Aluminium and Magnesium components in the fuselage
What speed does the launch motor accelerate the missile to, when does it burn out and what does it consist of?
Accelerates to 50m/s
Burns out within the container (40ms)
Grain consists of 460g of DB Propellant
What are the Safe separation Distances and times for the Javelin?
- 75 to 1.8s
- 5m
What are the six phases of operation for the Javelin?
- CLU Prep, Cooldown and Standby
- Activate AUR
- Track target
- Launch
- Flight Control
- Warhead Detonation
What are the CLU Modes
Day
Night
Test
Off
What does the Gunner do to ensure communication between CLU and Missile
The gunner squeezes and holds the CLU Fire Trigger switch to initiate the launch of the missile.
The Fire Trigger must be held for a minimum of 400 ms. The CLU Seeker Trigger is also being held.
Squeezing the CLU Fire Trigger removes a squib driver interlock and initiates the action of the missile RESTRAINT PIN SQUIB andthe CLU FIRE COMMAND.
What pressures does the Javelin BCU operate and vent at?
What is the proof pressure?
Operate at 7500 psi
Vent at 13,900 psi
Proof pressure 15,000 psi
(Javelin) Where is the GEU and what are its major components
Located behind the seeker and in front of the main warhead (Midbody) section
Major components :
Guidance electronic boards
Roll rate gyroscope
Power distribution assembly
Precursor warhead
How long does the BCU function for?
Battery life of four minutes
Label diagram: Javelin
(Javelin)
What are the four Missile components?
Guidance Section
Main Warhead Section (Mid-body section)
Propulsion section
Control Section
(Jav)
“Missile Fin Lock” is one signal required prior to firing warheads, what are the other two?
Missile Safe Separation
Missile ‘good guidance’ from GEU
How long does the seeker need to cool?
9.5 seconds
What constitutes the All Up Round (AUR) of the Javelin?
Launch Tube Assembly (LTA)
Missile
Battery Cooling Unit (BCU)
What are the four launch modes of the Hellfire?
Lock-on Before Launch (LOBL)
Lock-on After Launch - Direct (LOAL-Direct)
Lock-on After Launch - Low (LOAL-Low)
Lock-on After Launch - High (LOAL-High)
What are the four main sections of the Hellfire?
Guidance
Warhead
Propulsion
Control
Label Diagram: Hellfire
What are the compositions in the Main Charge for the Hellfire?
2.3kg of PBXN-109
218g Zirconium Sponge Incendiary Pellets
What is the control section arm and firing sequence
The rocket motor SAD provides an out of line detonator/squib whose electrical contacts are grounded and shunted in the safe position.
The CIA CCA provides the SAD with 28Vdc power which rotates the rocket motor squibs to be “inline”. If the SAD is returned to zero volts the SAD will rotate back to its original (safe) position.
The SAD should not be energized for more than 1 minute or the SAD may be damaged. Once the voltage is removed from a damaged SAD it will return to a safe position under the action of the return mechanism.
A fire pulse providing more than 3.8 amps to each squib will fire the dual rocket motor squibs and ignite the rocket motor.
The Control Interface Group (CIG) provides what?
- 28 vdc missile power
- 600 psi nitrogen/freon for flight control actuators
- interfaces for squib activations
- Control signals to fin actuators
What happens when the Hellfire thermal battery cools to 204˚?
Battery power is terminated when solidification of the electrolyte occurs
How does the AGM 114 ESAF work
Using digital circuitry to control the exploding foil initiator and slapper type detonator which is physically in line with the warhead charge
How long does the propulsion section motor burn for on the AGM-114?
3 seconds
What does the Gyro Optics Assembly (GOA) do?
Detects, filters, focuses and amplifies laser energy from the target.
What are the parts of the Gyro Optics Assembly (GOA) for the AGM-114?
Magnet
Counterbalance
Parabolic mirror.
What is the Electronic Safe, Arm and Fire device (ESAF) arming sequence?
Power On
Built in Test (BIT) passed
Umbilical separation
Fuse data
Safety separation have been received in the proper sequence.
What does the propulsion section consist of
Case/Grain assembly
Safe-arm-igniter and rod/grain assembly
Phenolic stabilizer (spider) nozzle
Wiring harness
How much pressure does the accumulator contain, and what does it regulate it to?
8000psi
Regulates to 600psi
How long does the thermal battery provide power, and how much?
Minimum of 55 seconds, providing 28Vdc