The function of an air cycle machine is to :

The advantages of thermal anti-icing are : 1. Simple and reliable system 2. Profiles maintained 3. Greater efficiency than that of an electrical resistor 4. Direct use of the hot air from the jet engine without substantial reduction in engine thrust The combination of correct statements is:

Conditioned air is air that has :

In the pneumatic supply system of a modern transport aircraft, the air pressure is regulated. This pressure regulation occurs just before the manifold by the :

In a bootstrap cooling system the supply air is first : exchanger.

The term "Bootstrap", when used to identify a cabin air conditioning and pressurisation system, refers to the :

In a bootstrap system, the purpose of the heat exchangers is to:

In an aircraft air conditioning system the air cannot be treated for:

The turbine in a cold air unit (air cycle machine):

Environmental system: in the air refrigeration unit, the water separation unit is placed:

The air-conditioning pack of a present-day aircraft consists of several components: these include two heat exchangers. the primary exchanger (P) and the secondary exchanger (S). The functions of these heat exchangers are as follows:

Conditioned air is air that has:

The term "cabin pressure" applies when an aeroplane:

When air is compressed for pressurization purposes, the percentage oxygen content is:

The term "bootstrap", when used to identify a cabin air conditioning and pressurisation system, refers to the:

In a bootstrap cooling system the supply air is first:

Engine bleed air used for air conditioning and pressurization in turbo- jet aeroplanes is usually taken from the:

In large modern aircraft, in the air conditioning system, reduction of air temperature and pressure is achieved by:

In a "bootstrap" cooling system, the charge air is first compressed in the cold air unit to:

A turbo-fan cold air unit will:

The cabin heating supply in a heavy jet transport aircraft is obtained from :

The pack cooling fan provides:

In flight, the most commonly used anti- icing method for the wings of modern commercial aircraft fitted with turbo-jet units is:

Concerning electrically powered ice protection devices, the only true statement is: windshield...

The elements specifically protected against icing on transport aircraft are: 1) engine air intake and pod. 2) front glass shield. 3) radome. 4) pitot tubes and waste water exhaust masts. 5) leading edge of wing. 6) cabin windows. 7) trailing edge of wings. 8) electronic equipment compartment. The combination regrouping all the correct statements is :

In a cabin air conditioning system, equipped with a bootstrap, the mass air flow is routed via the:

What is the purpose of the pack cooling fans in the air conditioning system?

The cabin air for modern airplanes is usually supplied by:

Cabin air for modern aircraft is usually taken from:

Main cabin temperature is:

In the air cycle system the air is cooled down by expansion:

The pneumatic system accumulator is useful :

The ice protection system currently used for the most modern jet aeroplanes is the

During flight, the wing anti-ice system has to protect

In jet aeroplanes the "thermal anti-ice system" is primary supplied by

The anti-ice or de-icing system which is mostly used for the wings of modern turboprop aeroplanes is :

The ice protection for propellers of modern turboprop aeroplanes works

The water separator of an air-conditioning unit is located at the cooling unit :