1. True
2. False

This is false. The mixture control is used to regulate this. Depending on the position of the airplane, the mixture control is used to make sure the engine is working well.

1. rotations
   meters
2. kilometers
   cycles

The life of an airplane engine is measured in cycles. A cycle is determined by the number of times a plane has taken off or landed. For example, when the plane takes off in one city and lands in another, that would amount to one cycle.

1. They need it every 20 cycles.
   They need it every 2,000 cycles.
2. They need it every 500 cycles.
   It depends on the engine.

Required maintenance differs for every engine. Some engines may require maintenance every 100 cycles, and some may require it every 1,000 cycles. However, after every flight, a regular inspection is conducted.

1. four
   one
2. nine
   six

There are four engines on an Airbus A380. The Airbus is a double-decker plane, so it needs a lot of power and thrust to get it going.

1. True
2. False

This is true. The propeller and throttle controls help to get the plane off the ground and into the air. When set to full, the plane will reach the intended altitude and then the controls can be readjusted.

1. throttle
   mixture
2. tilt
   cooling systems

Throttle affects the power of the airplane's engine which gives it the thrust it needs to take off. It's adjusted by the pilot, who can give it more or less thrust to make the flight go smoothly.

1. the nozzle
   the turbine
2. the compressor
   the fan

The fan is used to keep the jet engine cool. This is important because once the air is taken in by the fan, it's then regulated to go to one of two places where it works to move the plane forward.

1. one
   two
2. three
   four

The Memphis Belle had four Pratt & Whitney R-1690 Radial engines. The engines gave this plane the power to get its job done and return home in good condition.

1. The Wright Brothers
   Rolls-Royce Holdings Inc.
2. Boeing
   GE Aviation

The Wright Brothers built their own airplane engine for their famous first flight. But this wasn't their first choice. They had originally asked engine manufacturers to produce it, but none would agree to do so.

1. 1940 Alison V-1710
   1975 General Electric TF34 Turbo Fan
2. 1932 Curtiss Conqueror
   1917 Liberty L-12

The 1975 General Electric TF34 Turbo Fan is not a V-type piston engine, but is instead a gas turbine engine. A V-type engine is recognizable by the "V" shape that the two cylinders make.

1. Rotary engines
   Diesel engines
2. Piston engines
   Turboprop engines

Turboprop engines are best used when a plane has to take off on a short runway. These types of engines are commonly found in planes that are used in smaller airports.

1. steam
   light
2. thrust
   nothing

Airplane engines are meant to produce thrust. This is needed to get the airplane from the ground and into the air, as it can also control how high the aircraft is.

1. piston engine
   turbofan engine
2. diesel engine
   steam engine

The first airplane engine was a steam engine and it was created by John Stringfellow. He built many fly machines throughout his life using steam engines.

1. Lycoming O-360
   Anzani Three Cylinder
2. Ranger L440
   Thielert Centurion

The Cessna 172 used the Lycoming O-360 engine. No other plane has been produced more than the Cessna 172. The Lycoming O-360 has been trusted in this plane for many years.

1. Junkers Jumo 004
   Gnome Rotary engine
2. Reaction Motors XLR99
   Franklin Six-Cylinder engine

The North American X-15 had a Reaction Motors XLR99 engine. This was a rocket engine with the ability to produce an incredible amount of thrust.

1. True
2. False

This is true. Many types of airplanes use diesel engines. These engines are actually much better for the environment and more cost-efficient.

1. Rotary engine
   Diesel engine
2. Ramjet engine
   V-type engine

Ramjet engines typically need help to get the plane off the ground because they don't have the power to get them up to speed quickly. These type of engines are typically assisted at first by another vehicle.

1. GE Aviation
   Pratt & Whitney
2. Nissan
   Safran

Nissan does not make airplane engines. The other companies listed are major players in the manufacturing of airplane motors, and the motors made by them are typically the ones used in airplanes today.

1. V-type engine
   Rocket engines
2. Rotary engine
   Turbojet engine

Rotary engines have cylinders that are placed in a circle. They are placed in this manner because they rotate when the engine is in use.

1. Honeywell TFE731
   Lycoming O-320
2. General Electric I-16/J-31
   Pratt & Whitney Canada PT6

The General Electric I-16/J-31 was thought to be the same as the Whittle engine. The Whittle engine was a British-made engine and the I-16/J-31 was built to bring American planes up to par.

1. Air Gas
   Flygas
2. Soaring Gas
   Avgas

Avgas is the name of the gas used in small airplanes to power their engines. This gas powers piston engines and is commonly used by pilots who fly private small planes.

1. General Electric GEnx Engine
   Lycoming O-360
2. Bramo 323
   Rolls-Royce Merlin

The Boeing 787 Dreamliner uses the General Electric GEnx Engine. The plane seats hundreds of people and uses two of these engines to thrust it into the air.

1. the compressor
   the nozzle
2. the turbine
   the mixer

The compressor regulates the air pressure in the engine. The compressor does exactly as it sounds, it compresses the air down and then moves it into the combustor.

1. Jet engine
   Rocket engine
2. Piston engine
   Turboprop engine

A piston engine was the first type of engine used in a functional plane. The Wright Brothers used this type of engine to power the plane with which they conducted their first flight.

1. 1917 Liberty L-12
   Jendrassik Cs-1
2. General Electric H80
   Pratt and Whitney R-1340 Wasp

The 1917 Liberty L-12 was the first engine used to fly across the Atlantic Ocean. This engine was also used in combat during World War I, for which it was specifically developed.

1. True
2. False

This is true. It may seem like they are only used in rockets, but some airplanes use these as well! They can be used alone but are sometimes paired with a different type of engine.

1. Turboprop engine
   Rotary engine
2. Piston engines
   ScramJet Engine

A ScramJet engine was used for this flight. The engine performed exactly as it was supposed to and reached amazing speeds. It was used on later flights as well.

1. Pratt & Whitney R-2800 Double Wasp
   Garrett TPE331
2. Continental A40
   Rolls-Royce/Snecma Olympus 593

The Rolls-Royce/Snecma Olympus 593 was used on the Concorde. There were four of these engines on the plane that were, for the most part, the same, except for the fourth engine which was a bit different.

1. on the right
   on the back
2. at the front
   on the left

The fan on an airplane engine is typically found on the front. This is where it best serves its purpose of pushing the air to where it needs to be so that the engine can do its job.

1. Pratt & Whitney
   General Electric
2. Lycoming
   Rolls-Royce

Pratt & Whitney is the manufacturer of the Wasp series of engines. The engines in the series were radial engines, and each one was a different size and had different power.

1. Rolls-Royce Merlin
   General Electric GEnx Engine
2. Bramo 323
   Allison V-1710

The Rolls-Royce Merlin was used on the Supermarine Spitfire since these were common during World War II. After the development of a better engine, this plane commonly had a Rolls-Royce Griffon.

1. General Electric
   Boeing
2. Rolls-Royce Holdings Inc.
   Pratt & Whitney

General Electric makes an advanced turboprop engine. This engine is used in planes like the Cessna Denali and it is competition for Pratt & Whitney's turboprop engines.

1. Porsche PFM 3200
   ScramJet Engine
2. General Electric CJ610
   Continental TSIO-550

The General Electric CJ610, which was a turbojet engine, was used on the Lear Jet 23. This engine was only produced for about 10 years and it was also used in the Aero Commander Jet Commander 1121.

1. V-type engine
   Jet engine
2. Rocket engine
   Diesel engine

The Rolls-Royce Merlin V-12 is a V-type engine. This engine was commonly used during World War II and was trusted because of its reliability in times of desperate need.

1. Pratt & Whitney
   Rolls-Royce
2. GE Aviation
   Wilksch

Wilksch made the WAM series engines. Some of the engines in this series run on diesel and they've been used in planes like the Vans RV-9.