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ATO 2024 > Guided Weapons Directed Study > Flashcards

Guided Weapons Directed Study Flashcards

1
Q

Aux Power - 7 Design Factors

A

WEIGHT Highest possible power/Lowest weight ratio

STORAGE Max shelf life, simple replacement

CAPACITY Sufficient for flight time

RAPID ACTIVATION Immediate power

FLUCTUATION Surges eliminated

STRENGTH must withstand high ‘g’ forces

STABILITY Steady output under varying conditions

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2
Q

Aux Power - PNEUMATIC POWER Sources

A

Propellant gas:
Solid propellant
Liquid propellant
Motor bleed off

RAM air

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3
Q

Aux Power - Two hydraulic power systems

A

ONE SHOT SYSTEM
Pressurised fluid is used and discarded
into atmosphere

RECIRCULATORY SYSTEM
Pressurised fluid is used and discarded
into a reservoir for use again

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4
Q

Missile Guidance - Definition

A

Is the ability to alter the direction of the flight of a missile after launch and usually to be able to do this until it is close to the point of impact.

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5
Q

Propulsion - two types of air independent fuel sources

A

Solid and liquid

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6
Q

Propulsion - Advantages of Solid Propellant

A

Can be a stress bearing member
Ease of handling and storage
Non Toxic
Simple Design
Immediate response on firing
Storage container for propellant

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7
Q

Propulsion - the Bi propellant engine consists of four main assemblies

A

Storage tanks for propellants
Engine
Propellant feed systems
Fuel control system

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8
Q

Control - The two types of Control Loops are:

A

Open (Semi Automatic)
Closed (Automatic)

The major difference between the two is:

Open does not have a Reference (in most, cases it will be the Operator)
Closed has a built in Reference.

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9
Q

Control - What are the components required for a Single Channel Control System?

A

Feedback
Airframe
Reference
Control Device
ECU
Servo Mechanism

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10
Q

Control - What two components are referred to collectively as the Reference?

A

Sensor
Pick off

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11
Q

Control - What components are referred to collectively as the Servo Mechanism?

A

Control Valve
Actuator
Transducer

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12
Q

Control - What is the role of a Sensor?

A

Detects movement of the Airframe and responds with proportional movement

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13
Q

Control - What are the two main types of gyroscopes?

A

Free Gyroscope
Rate Gyroscope

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14
Q

Control - What is the minimum number of Free Gyroscopes required for stability?

A

Two

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15
Q

Control - What is the minimum number of Rate Gyroscopes
required for stability?

A

Three

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16
Q

Control - What are Pick offs, and where would there be found in the loop?

A

Device to produce an electrical signal due to mechanical movement and used in the Reference and Servo Mechanisms

17
Q

Control - What are the three methods to achieve Gyro ‘Run Up’?

A

Pneumatic Blast
Electric Motor
Mechanical Energy

18
Q

Control - What are the two types of Sensors?

A

Gyroscope
Accelerometers

19
Q

Control - What are the two types of Control Valves?

A

Spool
Needle

20
Q

Control - Control Devices are divided into two groups?

A

Aerodynamic Control
Thrust Vector Control

21
Q

S&A - Define ATTENUATION

A

Reduction in effect of a warhead as the distance from the point of detonation increases.

22
Q

S&A - 3 types of Warhead

A

HE - Blast, Frag, etc.
SPECIAL - Chem, Bio, Nuclear
NON OPERATIONAL

23
Q

S&A - Two types of HE Blast warheads

A

Internal - penetrates first
External

24
Q

S&A - The 3 Main Fuze Types are:

A

IMPACT
VARIABLE TIME
PROXIMITY

25
Q

Advantages/disadvantages of Preset guidance

A

Virtually immune from ECM
Cannot adjust for variable factors such as wind/drift

26
Q

Forces acting on a guided weapon

A

Aerodynamic lift
Aerodynamic heating
Drag/dynamic pressure
Vibration/resonance
Acceleration loads
Transportation loads
Thrust loads

27
Q

pneumatic power
power supply
types of fuzes
attenuation
warheads
blast warheads
design effects
pre-set
MCLOS
Sustainment motors
Forces
Bi-propellant
Stress-bearing
ram jet
gyroscopes
control devices

A

ATO 2024 (31 decks)

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