Week 3 ice and rain

When the combustion ___ ___ builds enough pressure it allows the ________ unit to start.

air fan, ignition

What is one method of inspection on exhaust heaters to detect leaks?

Pressurize & submerge in water

On a large transport type aircraft, which components will receive pressure first during an emergency landing gear selection?

Gear doors

When the temperature level falls below a preset value, the heater starts working again and continues to do this throughout the flight. What is this known as!?

Cycle

Some exhaust mufflers have welded _____ attached, which increase ____ transfer to the cabin air.

studs, heat

What component in the combustion heater sends power to open the fuel control solenoid?

Thermostat

To alter the speed of actuation in any component in a pressurized system, these units are used for that purpose.

Restrictors

In any pressurized system flow is maintained in one direction through a _____ valve.

Check

One advantage of high pressure cylinders is that they are _____ but they cannot be _________ during flight.

light, recharged

What component in a combustion heater ensures the correct air quantity & pressure is delivered to the combustion chamber?

Combustion blower

How often would an inspection be carried out on an aircraft using a shroud heater?

100 hours

Liquids and gasses have the ability to flow so both are considered fluids. However, the difference remains, ______ are highly compressible but _______ are practically ______________.

gasses, liquids, incompressible

What type of pneumatic system would be required to operate a de-icing component on a piston engine aircraft?

Low pressure

What are the three types of pneumatic systems?

low, medium, high

Combustion heaters require a ________ pressure pump with built-in ______ as it pulls the fuel through a ______.

constant, relief, filter

How does the de-ice system activate "pressure" or "vacuum" to the de-ice boots?

shuttle valve

What are two methods of removing moisture from a pneumatic system?

separator, chemical

With the combustion type heater, a ____/___ mixture is ignited in an airtight inner combustion chamber and the _______ is sent overboard.

fuel/air, exhaust

What component will isolate the original hydraulics in the lines when activating the emergency air brake system?

shuttle valve

These numerous welded components are potential areas for what to occur?

exhaust leaks

Why are Electric Heaters not commonly used in older small and mid-sized aircraft?

- Consumes Generator Power

How many attempts does the pilot have to actuate the emergency landing gear extension system!?

One

Which of the safety switches keeps the control solenoid closed if there is not sufficient ventilation air?

duct limit

When airborne, the aircraft uses ___ air but on the ground a ____ ___ draws air inward and these events are controlled by the ___ switch.

ram, vent fan, wow

What is the name given to the air component that is warmed and sent to the cabin?

Ventilation

Modern aircraft utilize what type of ignition units?

Electronic

What type of pneumatic system would be used on emergency landing gear?

High

The variable ________ is an adjustable _____ regulating device.

resistor, speed

The control solenoid is located downstream from the main solenoid at the entrance to the combustion _______ and this is controlled by the __________ and _____ safety switches.

Chamber, thermostat, three

How does the ignition unit step-up voltage to achieve a high spark?

Coil

Which one of the safety switches senses if there is sufficient air from the combustion air fan?

Pressure

Adding compressed ________ to move hydraulic fluid is known as a process called ____________.

nitrogen, pneudraulics

What type of heaters are commonly found on small to mid-size aircraft?

Combustion

What type of heating system runs the risk of contamination from __ gasses?

CO, Exhaust Shroud

Air pressure in the range of 50-150 psi would be considered a ___ pressure system.

Mid

This air component is directed between the combustion chamber and the outer shroud and delivered where?

ambient, cabin

Most single piston engine aircraft use what type of heating system?

Exhaust Shroud

Ambient air is warmed through _________ from combustion heat.

Convection

High pressure air systems use metal _______ at a pressure rating of ____-____ psi.

Bottles, 1000-3000

The main ________ valve allows fuel-flow to the unit and it is controlled by the heater ______ in the cockpit.

solenoid, switch