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Jet aircraft need an Auxiliary Power unit (APU) to supply power in order to get the the 2/3/4 turbines rotating before they can start them and add fuel to them. The APU needs an exhaust vent just like any other motor. The APU also supplies cabin air to the cabin while the engines are not started and the aircraft is on the ground. So the vent on the back of the aircraft is an exhaust vent for the air bleeding off of the APU.
What else can I help you with?
Jet plane speed?
Jet airliners travel at about 500mph
What is the difference between airbus and jet plane?
The Airbus company manufacturer jet airliners.
What are some companies that make jet airliners?
Most governments have companies that work to make jet airliners exclusively. One can contact their local airport for information on the products and services they provide.
What is the city in Argentina where jet airliners cars and trucks are made?
Cordoba
How many people does a jet usually carry?
A jet fighter aircraft carries one person, some jet airliners carry 500 people.
What rhymes with moonshiners?
Coal miners, 49ers, & big ol' jet airliners
What is a average speed of a plane?
Normal jet airliners fly at around 550 mph.
How is an Airbus propelled?
Airbus airliners use high bypass turbofan jet engines.
What is the average speed of a normal plane?
Normal jet airliners fly at around 550 mph.
How cold does it when your in a jet in the air?
The outside air temperature at 39,000 feet (a common altitude for jet airliners to fly) is about 45 degrees below zero.
What type of airliner is an Airbus A340 considered to be?
The Airbus A 340 is considered to be a widebody jet airliner. A jet airliner is an airliner that it is powered by jet engines. These types of airliners are also often called jetliners.
Can a passenger jet carry a car?
Most airliners are not equipped with the extra large cargo door that this would require. However, cars can and have been hauled on cargo jets, which are generally stripped-down versions of airliners.
