The Jet Engine Quiz
by Staff
These engines have transformed transportation, warfare and fun. How much do you know about jet engines?

Jet engines are combustion engines that produce what?

  • thrust
  • lift
  • fire

Before jet engines, what type of engines were used to power aircraft?

  • kerosene engines
  • piston engines
  • steam engines

What is the land-speed record for a jet-powered car?

  • about 1,100 mph
  • about 760 mph
  • about 420 mph

Jet engines are also sometimes referred to as what?

  • gas turbine engines
  • in-line engines
  • compression engines

Which type of jet engine is often used to power helicopters?

  • Turboshaft
  • Turboprop
  • Turbofan

What's the approximate maximum speed of a ramjet-propelled aircraft?

  • 1,200 mph
  • 3,300 mph
  • 4,500 mph

The first jet engines were nearly simultaneously invented by Dr. Hans von Ohain and which other inventor?

  • Richard Pearae
  • Frank Whittle
  • The Wright Brothers

By which decade were jet engines basically the standard type of propulsion for combat aircraft?

  • 1950s
  • 1960s
  • 1970s

Jet engines are a type of reaction engine, meaning they rely heavily on which of Newton's laws of motion?

  • Newton's first law
  • Newton's second law
  • Newton's third law

Which country was the first to mass produce a jet-fighter plane?

  • Germany
  • Britain
  • United States

What was the nickname for the Messerschmitt Me 262?

  • Thunder Blow
  • Lightning Strike
  • Storm Bird

What is a defining characteristic of a free-turbine engine?

  • The turbines use free-spinning bearings for better efficiency.
  • The turbines spin independently of other rotating engine parts.
  • The turbines are free as part of the engine purchase.

The jet engine combustor combines air with what component?

  • fuel
  • hydrogen
  • vortex

Which type of jet engine was the first to be produced for real-world use?

  • Turbofan
  • Turboprop
  • Turbojet

What do jet engines expel from their rear nozzles?

  • fire
  • gases
  • air

In a jet engine, what is the purpose of a mixer?

  • to quiet the engine
  • to equalize air pressure inside and outside the engine
  • to combine the fuel and air

Between which altitudes do turboprop engines generally generate their highest efficiency?

  • between 5,000 and 10,000 feet
  • between 10,000 and 20,000 feet
  • between 20,000 and 30,000 feet

What does an afterburner do?

  • adds nitrous to jet exhaust
  • ignites extra gases at the engine intake
  • provides added thrust

During takeoff, by what percentage can an afterburner increase thrust?

  • 10 percent
  • 20 percent
  • 40 percent

In a turboprop engine, what drives the spinning of the propeller?

  • the combustion chamber
  • the turbine
  • the compressor fans

Air flows through the engine at supersonic speeds in which type of engine technology?

  • Turbofan
  • Ramjet
  • Scramjet

What is the biggest jet aircraft engine in the world?

  • CF6
  • GP7200
  • GE90-115B

How much thrust did the GE90-115B produce to break the world record?

  • 112,800 pounds of thrust
  • 127,900 pounds of thrust
  • 132,300 pounds of thrust

What's the average unit cost for the GE90-115B?

  • $24 million
  • $12 million
  • $6 million

Which series of aircraft were the first supersonic fighter planes used widely in the United States Air Force?

  • Buffalo Series
  • Century Series
  • Merlin Series

Most modern commercial airplanes use which type of jet engine?

  • Turboprop
  • Turbofan
  • Turbojet

When the air-fuel mixture in a jet engine ignites, it can reach what temperature?

  • around 600 degrees Fahrenheit
  • around 1200 degrees Fahrenheit
  • around 2600 degrees Fahrenheit

The most powerful jet fighter engine in the world produces how much thrust?

  • 43,000 pounds of thrust
  • 62,000 pounds of thrust
  • 98,000 pounds of thrust

Why do turbofan engines route some air on the periphery of the main body of the engine?

  • to double the engine's power
  • to keep the engine quieter
  • to stabilize the plane

Which engine has been used for more fighter aircraft than any other?

  • Pratt & Whitney F100
  • GE F110
  • GE F414