Air system Flashcards by Ben Cann

Purpose of the arrestor system?

Stop UAV on landing and aborting take off

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Parts of the UAV the foward cover protects?

Avionic cooling ducts input & output

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Engine accessories mounted onto the engine non-drive side endplate? 3

Oil pump assembly
Thermostat
Waterpump assembly

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What do the shock mounts on the engine exhaust silencer provide? 2

Thermal expansion of silencer

Isolate vibrations from the UAV

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Components found in mid section of fuselage? 4

Fuel tank
Oil tank
Main landing gear
Electrical harness routing

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The reduction drive assembly uses a elastomer in shesr type coupling to transfer drive to the propeller hub. Why? 3

Provides shock protection
Provides vibration dampening
Absorbs any axial misalignment

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Which component on the arresting rod prevents the arresting cable from slipping off the arreting hook once engaged?

Spring latch

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Main purposes of the Dual Air Vehicle Container? 2

Houses & protects 2 UAV’s during transit & storage.

Used as support equipment during installation and removal of main landing gear & nose landing gear

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What components are in the rear wall of the Dual Air Vehicle Container? 3

Desiccant box door
Jack base plates stowage
Humidity indicator

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Purpose of the V-tails?

Steer the UAV around pitch & yaw axis

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WK can fly in segregated airspace within the UK, up to 16,000 feet. What capability does it provide the military? 4

Intelligence
Surveillance
Target acquisition
Reconnaissance

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Why is the engine oil pre-heated?

Reduce its viscosity in low ambient temperature

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4 things directly attatched to the UAV fuselage?

Propulsion system
V-tails
Landing gear
Central wing

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Purpose of payload covers? 3

Protect during maintenance, parking & towing

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Warning with cradle telescopic legs?

When pins removed legs can fall and cause injury

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What components in the front wall of the dual air vehicle container? 3

Documents & winding gear locker
Roof access saftey harness locker
A frame

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The ECU recives data from which engine sensors? 2

2 Barometric Air Pressure Sensors

2 Crank Position Sensors

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How is drive transferred from reduction drive assembly to the propeller hub?

Elastomer in shear type coupling

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Purpose of the control rod?

Convert the rotary movement of the shaft into liniar movement

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Central wing quick access panels give you access to what? 2

Outer wing attachments

Electrical connecters

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Main components of the propulsion system? 3

Engine
Engine Frame
Propeller

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What opening’s are there at tge rear of tge combined cowlings? 3

Radiator cooling output
Propeller shaft output
Engine cooling air output

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Arresting system is designed to do what? 3

Low stress smooth contolled stop
Stop the UAV on am aborted landing
Stop UAV on landing

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What panel is located at the front right of the fuselage?

Umbilical access panel

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What adjustments does the ECU carry out? 4

Fuel compensation vs engine temp Fuel timing vs revolutions per minute Fuel quantity vs RPM Ignition sparking times vs RPM

What does the vacuum cause during tge engine induction phase?

Fuel/air mixture to be sucked into the chamber

What lights are found on the outer winv tip? 3

Nav Position Anti col

What are the two systems that cool the Wankle engine?

Air & Water

The correct fuel/air mixture is achived in the Engine fuel injection by adjusting what?

Intake throttle position | Fuel injector timing

Purpose of the blanks?

Protect from damage and FOD

How does the ECU trigger ignition at the correct time?

Timed by the crank position sensor

Main components of the Wankle engine cooling system? 3

Fan belt Idler assembly Poly V fan

Tools required to remove centre wing?

None

How is the chamber volume increase achieved?

Ecentric orbit of tge rotor as it rotates around fixed gear

The air box cover with the air filter, creates a closed compartment where air pressure builds up during flight. What does this provide?

Increased throttle response

What sytems can be accessed by removing rear cover? 4

Magnetometer ECU Fuel system components V-tail actuators

Electronic Fuel injection system contains what components? 6

2 ignition coils 2 crank postion sensors 2 barometric air pressure sensors Throttle, Throttle position sensors & air intake temp sensor

Function of the exhaust silencer heat shield? 2

Protects ground crew Absorbs and disapates heat

First check to do before building UAV?

Shock level indicators

Approved payload configs?

F: dummy A: Electro optical/infa red F: Radar A: Electro optical/infa red

Ice mode, flight controls and degrees?

Flaps and ailerons 3•

Functions of generator control unit? 2

Regulates the alternator rectifier output power Regulates external power from PATE

What unit controls the lights by comands sent from the vehicle management system computer

Power control & distribution unit

What component of the UAV’s fuel system counteracts the pressurd pulses created by the action of opening and closing the engine fuel injector?

Pulse dampening tube

Which IFFmode is used for cryptography secured military friend or foe identification?

Mode 5

Ice protection system is made up of? 3

2 distrobuters Eight wing and two v-tail expulsive actuators One ice detector

Ice flight mode levels?

Two & three

Principle punctions of vacuum pumps?

Venturi Effect principle

How is transponder controlled during normal operation?

By GCS operator console assembly via client server

Why fit dust caps to ground data terminal fiber optic canles when not in use? 2

Prevent damage from connector Prevent ingress of FOD

How much yaw from set flight path?

45•

Power from PATE to UAV?

48vdc

What decides when UAV sustem to be powered up

Vehicle management system computer

Degrees postion lights cover?

70•

Purpose of ADV 202 compressor?

Compress jpeg

How does fuel go from main tank to collector tank?

Vacuum pumps

I master synthetic aperture radar, what happend to radar range as resolution increases?

Range decreases

Engine core contains? 3

Drive & non drive endplates Eccentric shaft Rotating assembly

Components found on left wing tip? 3

Red foward nav light Anti col strobe White position light rear

Which panel on the Ground Control Station (GCS) does the Ground Data Terminal (GDT) 335m fibre-optic cable connect to?

The Non-Bowman Input/Output Panel.

For the correct operation of the engine fuel injector the fuel system has to achieve a set pressure What is the fuel pressure set to?

3 Bar nominal (43.5 psi).

Which fuel components send and receive fuel from the fuel cross fitting pipe? 3

Two High Pressure (HP) Fuel Pumps sends the fuel to the Fuel Pressure Regulator (PRV) and the ten micron filter.

What is the purpose of the payload covers? 3

Protect the payloads during parking, maintenance and whilst towing the UAV

What is the maximum distance achieved between the Ground Control Station (GCS) and the Wide Band (WB) Ground Data Terminal (GDT) with all fibre-optic cables fitted?

1005 metres

What statement best describes the AV nose area construction?

1/4 thick, armid phenolic coated flexicore.

What happens when the Identification Friend or Foe (IFF) transponder receives a challenge message from the interrogating radar?

The Crypto Unit encodes this message and replies with an encrypted three pulse train. This is transmitted by the IFF transponder

What is the output voltage from the UAV rectifier?

40 to 150 VDC variable.

What are the two types of radar scan that the I-Master Radar payload can carry out?

Synthetic Aperture Radar (SAR). | Ground Moving Target Indicator (GMTI).

Which Line Replacement Unit (RU) on the Unmanned Air Vehicle (UAV) 'processes' and 'packages' the payload imagery?

The Exploitation Management System (EMS).

What is the fuel capacity of the main fuel tank and what is it limited to?

120Kg limited to 100Kg

What is the nominal output voltage of the emergency battery?

25.2 VDC

How many Unmanned Air Vehicles (UAVs) does the Narrow Band (NB) Ground Data Terminal (GDT) allow the Ground Control Station (GCS) to 'monitor' and 'control'?

Monitor 3 and Control 1

The Ice Protection System (IPS) uses an ice detection signal from the ice detector to indicate the presence of ice. To detect the presence of ice, the ice detection probe will vibrate at what nominal resonant frequency?

40Khz

The Unmanned Air Vehicle anti-collision lights are located in the wing tip assemblies. What is the flash rate for the anti-collision lights?

60 flashes per minute.

What 'gas' is used to purge the Electro-Optical Payload (EOP)?

Nitrogen

Which antenna will the air Lightweight Multiband Air Radio (LMAR) use to interface with the ground LMAR?

Wide Band Data Link (WBDL) antenna

The procedure for visually examining the NBDL case and electronic assembly requires examination of which following components? (Select 4 answers from the following list)

Cooling fan housing and blades Air filter Electronics (radio) assembly Case and frame assembly

What two major components provide the power supply and power control for the Ground Control Station (GCS) Ground Data Terminal (GDT)? 2

The Data Link Power Controller (DLPC) The Light Weight Field Generator (LWFG).

In the Unmanned Air Vehicle how many pitot and static air tubes connect the Primary Pitot Probe to 12N08) the Air Splitter?

What is the purpose of the actuator arm?

Converts relatively small rotary movement of the actuator shaft into a larger rotary movement and allows the control rods to move the required distance during flight for control of UAV