GW/BB Summative practice Flashcards
What are the four major sections of the AGM-114M-1 Hellfire II?
Guidance Section, Warhead section, propulsion section, control section
What are the four launch modes of the AGM-114R-1 Hellfire missile?
Lock on before launch, lock on after launch (LOAL direct, LOAL low, LOAL high)
Label the diagram below of an AGM-114M-1 Hellfire II.
1 - seeker 2 - Guidance Electronics Group 3 -Gyroscope 4 - BF ESAF with TD Fuze assembly 5 - Pneumatic accumulator 6 - Thermal battery 7 - Control interface assembly
What does the Control Interface Group (CIG) provide?
Provides control over control surfaces (fins) and TVC vanes by 28v DC electrical power output as well as 600psi pneumatic pressure to drive the actuators.
Complete the statement on the propulsion section arm and firing sequence.
The rocket motor Safe Arm Device (SAD) provides an out of line ____________ whose electrical contacts are grounded and __________ in the safe position. The CIA card provides the _______ 28 V power which rotates the rocket motor squib in line. If the SAD is returned to__________ volts the SAD will rotate back to its original (safe) position. The SAD should not be energized for more than __________ or the SAD may be damaged. Once voltage is removed from a damaged SAD it will return to a
_________ under the action of the return mechanism. A fire pulse providing more than _______ (each squib) will fire the dual (redundant) rocket motor _______ to ignite the rocket motor.
detonator/squib shunted SAD zero 1 minute safe position 3.8 amps squibs
What is this fine thing? (hellfire)
What type of initiator / detonator does this component control?
Electronic Safe Fire Device
Electronic foil initiator (slapper detonator)
What combination of guidance and initiating devices (fuze) does the RBS 70 Bolide missile have?
SACLOS Beam riding with PRX fuze (with impact function)
What is the NEQ of the RBS 70 Bolide Missile?
5.34kg
The RBS 70 Bolide missile is man portable (as a MiC). What does MiC stand for?
Missile in container
What protects the RBS 70 Bolide missile during storage and transport against mechanical damage?
shock-absorbing cellular plastic end caps and centre pad
What is the launch motor burn time of the RBS 70 Bolide missile?
40ms
In regard to the RBS 70 Bolide missile, what design features are included in the warhead?
Shaped charge liner, 475g OCTOL main warhead charge, plastic liner filled with 3000 tungsten balls (to enhance frag), convex contour to disperse frag forwards and rearwards. Results in shaped charge, blast and frag effects.
Describe the shape and dispersive effects of the casing of the warhead found in the RBS 70 Bolide missile.
Convex contour designed to disperse frag forwards and rearwards.
A Safe Arm Device (SAD) is located behind the Warhead section of the RBS 70 Bolide missile features a slider interrupter. Specifically, what function does this component perform?
Keeps the detonator out of line of the explosive train until the pre-conditions for firing have been met.
In the RBS 70 Bolide missile, what are the three modes of operation of the Proximity Fuze and what is the minimum target detection range?
The three modes of operation of the proximity fuze are ________, _________, _________.
The minimum detection range is as close as _____ metres
Off, Normal, Small Target.
0.4m
What are the three sub-assemblies that make up the Javelin AUR?
LTA,
BCU,
Missile
What are the six Javelin phases of operation?
CLU preparation, cooldown, standby, AUR Activation, Target lock, Launch, Missile flight control, Warhead detonation
How long must the gunner squeeze and hold the CLU Fire Trigger to initiate launch of the missile?
400ms
At what distance is SAFE SEPERATION declared in the Javelin missile system?
41.5m
(Jav) At what pressure will the BCU vent?
13,900 psi
Label the diagram below of the Javelin missile.
1 - FPA 2 - seeker section 3 - onboard volume argon 4 - Guidance electronics unit 5 - electronic module 6 - propulsion section 7 - control actuation system
(Javelin) L1 - L11 missing words (as per formative);
L1 - 400ms, squib driver interlock, restrain pin squib. L2 - fire command L3 - 33 +/- 3ms, 20+ volt supply L4 - 20ms, battery squib L5 - 220 +/- 20ms L6 - BIT, aiming, tracking criteria L7 - reach and maintain L8 - battery, battery enable, mis-fire L9 - 33ms L10 - missile battery, gas switchover L11 - 500ms
(Basic Bricks) List the sources of pneumatic power in guided missiles?
Solid Propellant
Liquid Propellant
Motor Bleed Off
(BB) What are the three types of auxiliary power?
Electric
Pneumatic
Hydraulic
(BB) What are the three types of fuzes used in GM?
Impact
Variable Time
Prox
(BB) What are the three classes of warheads in GM?
HE
Special
Non-operational
(BB) Name the seven basic bricks.
Structure Propulsion Guidance Control Auxiliary power Payload Fuzing
(BB) Name four types of Directing Devices (WRT guidance systems)
Wire
Radio
Radar
Laser Beam
(BB) What does SACLOS stand for?
Semi Automatic Command to Line of Sight
(BB) What are the forces acting on GW?
- Thrust Loads
- Acceleration Loads
- Aerodynamic Lift
- Drag/Dynamic Pressure
- Aerodynamic Heating
- Transportation Loads
- Vibration & Resonance
(BB) 3 types of special warhead?
Chemical
Biological
Nuclear
(BB) What are the 3x types of guidance?
Pre-determined
Controlled-path
Homing
(BB) What are the main components of a liquid propellant engine?
Storage tanks for propellant Engine Injector Combustion Chamber, Ignition System, Nozzle
What are the disadvantages of liquid propellants in propulsion units?(BB)
Difficult to handle, Slow reaction, Special Storage needs, Toxic, Expensive Less reliable than solid propellants
(BB) What are the 3x phases of guidance? Describe each.
Launch phase - guidance signals must first be clamped to zero. Guidance must gather the missile onto the correct flight path.
Mid-course Phase - primary system of the issile which keeps it on it’s desired path
Terminal phase - missile is finally guided onto the target. Le Bang.
How does SACLOS work?(BB)
Operator must keep sight coincident with target
Missile is then guided onto line of sight be sensors in ground equipment
Ground equipment sense deviation from path and sends corrections to missile guidance unit
Missile adjusts trajectory based on commands from guidance unit.
(BB) What are the three types of fuzes used in GM?
Impact
Variable Time
Prox
(BB) Name the seven basic bricks.
Structure Propulsion Guidance Control Auxiliary power Payload Fuzing
(BB) What does SACLOS stand for?
Semi Automatic Command to Line of Sight
(BB) What are the three components of a guidance system?
Tracking device
Computing device
Directing device
Name four types of Directing Devices (WRT guidance systems)
Wire
Radio
Radar
Laser Beam
What are the two types of gyroscopes?
Free
Rate
What are two types of sensor used in control systems?
Gyroscopes
Accelerometers
What are the 3x classes of guidance?
Pre-determined
Control-Path
Homing
What do control loops require?
something controllable
error detection
error conversion
controlling device
What are 2 types of control valves?
Spool, needle
What are the two types of propulsion systems?
Air dependent (jet engines) Air independent (rockets)
What are the 3x types of guidance?
Pre-determined
Controlled-path
Homing
WHat are the 4x means of guidance?
Wire
Radio/Radar
Beam Riding
Homing
What are the two types of motor?
Booster motor (high thrust, short period) Sustainer motor (low thrust, longer period)
What are the 3x motor configuations?
Tandem,
Integral,
Wrap around.
What are the 3x methods of achieveing PRX fuze initiation?
Radio/Radar
Barometric
Magnetic/acoustic
What are the two types of control loops?
Open (semi-automatic)
Closed (Automatic)
With regards to reference sensor pickoff, what are the two types?
Variable Resistance
Variable Reluctance
What are the requirements of a guidance system?
Recognise relative position of the missile and target
Calculate the ideal flight path to the target
Send correction details to control system
What are the 3x phases of guidance? Describe each.
Launch phase - guidance signals must first be clamped to zero. Guidance must gather the missile onto the correct flight path.
Mid-course Phase - primary system of the issile which keeps it on it’s desired path
Terminal phase - missile is finally guided onto the target. Le Bang.
What are the Hellfire launch mode ranges?
LOBL 500-7000m
LOAL Direct 1500-7000m
LOAL Low 3500-8000m
LOAL High 3500-8000m
What are the minimum, maximum and average functioning range of the RBS-70 PRX fuze?
Min 0.4m
Max 6m
Average 4m
