How often do planes change engines?

Airline engines (for example the Rolls Royce Trent series) usually have TBOs of over 15000 hours. The record for maximum time for an engine on wing (i.e. use in aircraft before removal for overhaul) is well over 40,000 hours.

Why are planes not getting faster?

Airplanes don’t fly faster because it is not in their economic best interest. Flying faster means burning more fuel. This means ticket prices would go up. History has shown passengers rather spend more time in the air if it means lower airfares.

How long do airplane engines last?

Older and smaller jet engines typically have TBOs of 5,000 hours at the most. More modern engines have about 6,000 hours or more. With most business jets accumulating less than 500 hours of flying time a year, the schedule for modern jet engine MRO operations averages about 12 years or more.

What does Tbo stand for aircraft?

TBO, or Time Between Overhauls, is a time limit specified by the engine manufacturer for a specific engine in a specific installation, after which overhaul is either recommended or mandated depending on how the aircraft is used.

Should new airplanes use diesel or gasoline?

If we consider that jet fuel can be 50\% to 60\% cheaper and some engines are 30\% to 40\% more efficient than avgas engines, it merits for new airplanes to consider the use of diesel and abandon the close to the 100-year obsolete technology of the avgas engines.

What makes a modern car engine better than an aircraft engine?

Modern car engines optimise fuel consumption with electronic engine control, so the fuel/air mixture and the timing of the spark plugs and the valves can be adjusted to the actual condition. Aircraft engines are technically still stuck in the 1950s and much more simple, which helps to make them more reliable.

How can I compare the fuel consumption of a car and aircraft?

Run your car engine at full throttle and measure again. The aircraft engine will look very good in comparison. Modern car engines optimise fuel consumption with electronic engine control, so the fuel/air mixture and the timing of the spark plugs and the valves can be adjusted to the actual condition.

What are the advantages and disadvantages of diesel engines in aircraft?

In the vast majority of light piston aircraft the benefits of diesel are way lower than the costs in involved. Diesel engines are heavy, this is because the diesel cycle relies on cylinder pressure rather than a spark to ignite the fuel-air mix.